AV Geeks Lunch 5-21

in Washington DC is a modest building which houses the most extensive weather recording and forecasting organization in the world the United States weather bureau here each day to the desk of the bureau's able chief commander Francis Wilton Reich elder fir come reports from the 750 weather stations scattered throughout the nation and her territorial position wind Velocity's in their direction barometric readings and complete meteorological data high and low-pressure areas are recorded hourly at each station by a staff of trained observers and sent in code to the Central Bureau in Washington or it is from these reports correlated at the u.s. weather bureau and recorded on weather maps made available to the public that the citizen gains knowledge and news of his number one topic of conversation the weather he may also if he so desires receive by a male the government's daily weather map as some 18,000 individuals and organizations now do of special interest is the state of the weather to those whose livelihood depends on rain or shine the farmer with his crops the ship's master at sea the Air Transport Pilot but just as important our weather conditions to the owners of nearly 30 million cars which today crowd the highways or whatever the weather hot or cold the complex motor of the modern automobile must function efficiently and as each year millions of new cars are turned out by motor manufacturers each model a machine more complex than the one before one factor has remained essentially unchanged since the internal combustion engine was invented the principle that the motor must be cool long ago the national carbon company commissioned its chemists to develop an efficient anti freeze kerosene molasses glycerin alcohol almost anything that would lower the freezing point of water had been used by the general public for years alcohol survived the longest but national carbon chemists hoped to find something better eventually they hit upon a compound which combined ideally a low freezing and the high boiling point ethylene glycol the base of Prestone anti freeze and today Preston anti-freeze is the perfect cold weather protection not only because it's ethylene glycol base 97% of the solution is highly refined and purified but because the ingredients exclusive with Prestone II antifreeze in the remaining 3% ingredients called inhibitors by chemical engineers have been scientifically selected to prevent many of the failures associated with ordinary antifreeze solution and today the manufacture and distribution of this scientific anti freeze solution is in its own right a highly developed industry but behind the planted Charleston West Virginia is a research laboratory at Buffalo New York as modern as any in US industry for the makers of Prestone anti freeze consider it their job not only to supply the motorist with the best anti freeze solution that they are capable of manufacturing but of determining through research exactly what goes on inside the cooling systems where anti freeze solutions circulate of helping the motorist through science to get the most out of his equipment and a continual research to keep pace with the swiftly changing temple motor car manufacturer prime cause of trouble in any cooling system is rust and corrosion and in the Buffalo laboratory a special department has been set aside for its investigation here under rigid controls are tested the corrosive effects of a score of different solutions on the iron copper solder brass and aluminum used in motor cooling system but before each strip of metal is tested it must be weighed on scales so delicate that they can detect a variation of 1/7 millionth of an ounce or only by the most precise measurements can the exact amount of corrosion be determined when the test has been completed then the priests weight has been recorded the metal sample is placed in a bath of the solution which is under investigation for its corrosive action here in the laboratory corrosion tests the conditions of a motor cooling system are simulated kept under constant surveillance day and night for at least 200 hours here temperatures can be regulated by electrical control to simulate a motor running at normal heat and because with the rapid circulation of modern cooling system pumps a mixture of air is inevitably present in the circulation liquid air must be blown into the solution being tested its flow most carefully controlled or air increases the corrosive power of water as much as 3,000 percent and it is plain water that is found to be the most corrosive of all motor cooling liquid at the conclusion of every test each metal sample is again weighed it weight matched against the figure recorded before the test began to determine loss through corrosion tests with actual radiators prove that the rust preventing inhibitors of the essential 3 percent in stone antifreeze reduced by 75 to 95 percent the corrosive action of water national carbon chemists note well the corrosion on the aluminum heads being tested and from these tests have learned that only a product such as Prestone anti-freeze renewed each fall can give full protection against rust and corrosion for a whole winters driving and the importance of using a rust inhibitor such as rust stone corrosion preventive in spring and summer a source of cold weather indignation to many a motorist and a danger to his motor as well is the discovery that a radiator recently filled with the supposedly reliable anti freeze solution is suddenly half-empty but through experimentation with a miniature cooling system national carbon laboratories have long known the answer that most radiator cooling fluids due to the presence of air will form and forth when circulating even untreated ethylene glycol when tested in this experiment can be seen forming in the cooling system with consequent loss due to overflow but when this same test is applied to Prestone antifreeze a far different picture is presented for national carbon engineers have included in the essential 3% of Prestone anti-freeze a specific inhibitor to prevent their refined ethylene glycol from forming to prevent loss of protection from overflow long standard to its buyers has been the guarantee of Prestone anti-freeze that it will not fleek out of any cooling system tight enough to hold water to backup this guarantee national carbon laboratories have designed operators to measure leakage exactly behind the petcock of this apparatus as an assembly containing a split gasket but to simulate a leak such as might occur in any water jacket water is heated to motor temperature by electrical coils or exact temperature control circulation to the system now has started and water begins to leak out while its rate of flow is measured dropped by drop one to three or a hundred odd drops of water every minute then on the same operators the comparison with Prestone anti-freeze a 50% solution of Prestone anti-freeze and water is prepared for testing is subjected to precisely the same conditions of motor heat and leakage as the water again the loss is measured one-two-three-four only about 48 drops to the minute some 50% less leakage than plain water and more than making good on the famed Prestone guarantee for further study of leakage national carbon laboratories have set up equipment to approximate actual conditions of road vibration and shock and although the best radiator built could not stand up under such treatment each one that succumbs to the long and punishing hours of abuse adds valuable data to national carbon store of knowledge vulnerable parts of any motor cooling system our hose connections and many our motorists his cooling system clogged has placed the blame squarely on the anti freeze solution in his radiator today in national carbon laboratories may be seen an entire wall covered with different types of hose connection through which are being circulated water and various anti freeze solutions for long ago national carbon engineers determined to learn all there was to know about motor hose connections each hoses here in constant use day and night for a full year before it is removed for examination on the outside all hose connections look much alike but put to such a test the real quality of each hose will soon appear for most significant fact to be demonstrated is that holes decay is in direct proportion to the quality of the holes that an inferior hose will rot with any cooling fluid cause radiator clogging but a good grade of hose under precisely similar conditions will show no deterioration and national carbon men learned that Prestone anti-freeze does no more harm to holes connections than water that hole should be checked bad hose replaced before installing antifreeze that bad holes not antifreeze as the cause of most hose connection trouble [Music] number one purpose of an anti-freeze solution or of anti-freeze research is to prevent freezing water jackets costly repairs to engine heads in a specially constructed freezing room where temperatures can be brought down to 40 degrees below zero national carbon technicians must work in aviation suits and because of danger from intense cold no one may enter the cold room unless the technician at the control board is present to watch every action through a window of triple glass it is here with temperature readings from every vital part of the motor cooling system recorded at regular intervals that freezing problems resulting from insufficient antifreeze protection are studied at firsthand but paradoxically it is heat not cold that subjects an anti-freeze to its most severe test boiling point of plain water most common of cooling system liquids is 212 degrees at sea level since motors normally operate at about 160 degrees this provides reasonable safety for ordinary driving but the boiling point of a 50% solution of water and alcohol common strength or cooling system use is only a hundred and eighty two degrees perilously near the danger point of motor heat to demonstrate this danger on a motor actually running national carbon engineers use three stock cars of standard mate attached to radiators filled with a 50% solution of alcohol and water our extension from the radiator overflow thermostats are standard equipment as installed at the factory one gauge records the solution temperature in the cooling system but the other is connected to one of the several points in a modern motor known to automotive engineers as hot spots all goes well while motors are running but when the ignition is turned off cooling system circulation ceases then the needle of the dial connected to a hot spot begins to climb or around the hot spot far inside the water jacket the temperature is rapidly being raised up and up and from the low boiling alcohol and water solution steam is being formed expanding at a ratio of sixteen hundred to one steam which must escape to the radiator overflow the steam has reached the overflow pipe forcing out the alcohol antifreeze before it in the common cooling system complaint called after boil but the boiling point of a fifty percent solution of water and press stone anti-freeze is 226 degrees more than 40 degrees higher than the alcohol solution to provide an ample margin of safety from after boil for users of Prestone antifreeze but the final check on all laboratory and experimental work is done on cars in actual daily use in a series of experiments specially designed by national car panniers for application to Prestone anti-freeze a selected core of company personnel carry instruments for testing the results of their work in a never-ending series of practical road tests in every type of car and under every condition of weather and the road in the New York offices of national carbon company makers of Prestone II antifreeze is the general service department less than one complaint in 5000 purchases are registered against Prestone antifreeze but each one is carefully investigated and reported for the records of this department behind Prestone anti-freeze as a field service organization covering every section of the country the company service engineers are able to show in most cases that the cause for complaint was not due to the failure of Prestone II antifreeze in rare cases laboratory investigation seems advisable and the sample of the solution is sent to Buffalo first step in a rigid system of analysis is to place a sample in a centrifuge here it is rapidly world for 20 to 40 minutes after all solid matter is precipitated to the bottom of the container it is observed that rust is present in the solution a technician immediately checks to see if the press stone anti-freeze rust inhibitor is depleted for this purpose it is tested on a potentiometer the needle shows the rust inhibitor to be at full strength as a double check the sample is run through the corrosion test which demonstrates that rust must have been in the radiator before Prestone antifreeze was installed such is the likely end of every complaint which can be put to scientific tests for a sample can of Prestone antifreeze from every new lot manufactured at the factory is tested at the laboratory before any other lot is placed upon the market and so throughout the years Prestone II antifreeze has maintained its standard of fine service a modern plant and modern research and experimental facilities kept up to date and added to year after year with the single object of rendering service to its dealers and to the public but most important of all its work has been the constant research to develop the inhibitors present in that essential 3% of Prestone antifreeze or that small percentage is as vital to Prestone anti-freeze as the elements added to high-grade steel for the special requirements of modern industry as some three percent of alloys and gears crankshafts piston rods without which the perfection of the high-speed motor will be impossible as some five percent of nickel and chromium in Brett not armour plate without which a direct hit by a large caliber shell would pierce the heaviest armor of any battleship [Music] and the national carbon company takes pride in the knowledge that Prestone anti-freeze with its 3% of inhibitors scientifically developed has become the leader of all anti freeze preparations in the world you hello everyone I'm skip Alzheimer Baby geeks thanks for joining us for lunch I collect old films and delight and showing them to folks like you been doing it for 25 years and that was antifreeze the story of scientific research as done by the march of time people which is why there's that the March you know this the music and then the narrator who's talking excitingly about basically what is an ad for Prestone II antifreeze came out in 1935 I saw somebody found it and posted about it but I did some digging to see where it was and yeah 1935 yeah it and it makes it like it's a patriotic imperative that you have antifreeze it's that's that's what I like about it the message is is so ratcheted up um yeah so we're two days away from finishing week ten and I was looking to see how many films we've actually watched so far roughly two hundred and eighty or so give or take so let's keep going this next film is is a training film and training films were meant to be shown to employees as a as a way to save time to cover specifically like the same thing over and over and over again especially for jobs that have high turnover so you have a lot of fast-food restaurants had training films or training videos because there was a quick turnover and managers were spending all their time training people so this film is meant for people that wash bus tables and wash dishes this is mister dish machine operator you are looking at one of the nerve centers of any good eating establishment the dishwashing area if you mister dish machine operator don't do your job correctly the result is unhappy people lots of them [Music] the bells stop ringing and soon there are no people at all if the dishes you handle are not washed at top speed if they come out dirty or unsanitary you your management and everyone you work with are in trouble that's why your job proper dish handling and dish machine operation is important to any successful eating establishment [Music] cleanliness is the keynote of the food service industries and cleanliness must begin with employees since dish machine operators come into contact with utensils and dishes on which food is served they must be neat them clean while on the job being friendly with Busboys and other dish machine operators makes your job easier and more pleasant remember the teamwork and cooperation with others are essential in the food service industries your first step in washing dishes is to remove the excess food bits and particles you can do this with your bare hands or wear rubber gloves or use a squeegee find out which method your management prefers then pre rinse under a warm spray this helps to ensure the wash cycle doing a complete job now let's see how the dishes are loaded on a large conveyor type machine place each dish carefully and properly in the conveyor be sure that two dishes are never stacked in one space this gives the wash and rinse sprays the best chance of doing a thorough job place cups rim down stack glasses upside down put silverware into a shallow perforated tray then pre-rinse to soften remaining food particles lastly place the tray on the conveyor cups or glasses in racks can also be placed on the conveyor now let's look at a smaller type of dish machine a type that is used in many establishments hereafter plates or other dishware have been cleaned of excess food particles they are placed in dish racks they are pre rinse both front and back make sure that plates are properly separated also in loading handle all dishes and glassware carefully to avoid breakage that's right arrange them correctly for the best washing action for this type of machine put silver handles down in the special containers which are placed in the dish racks then pre-rinse silverware to prepare it for the most effective washing to better understand how the dish machine works let's look inside as your dishes move into the machine sprays are activated from top to bottom first for washing then for rinsing and sanitizing for these sprays to do their job you must load the Machine correctly learn about the detergents required by your equipment then be sure you maintain proper operating temperatures usually 140 to 160 degrees in the wash cycle 180 degrees or more in the rinse cycle if your management uses a wetting agent learn how to add it correctly by asking someone who knows as items come out after washing they will quickly dry in the air with this type machine you place items in racks or bins as they come out on the conveyor a covering such as paper or cloth will keep your dishes sanitary for a longer period of time place silverware in separate containers and store away from traffic and moisture also place cups in racks again don't touch the edge of the cup place glasses in racks handle them as far as possible from the edge of the grass don't touch dishes on any surface that comes into contact with either the food or the mouth check dishes for chips and cracks remove broken chipped or cracked dishes and throw them away since they cannot be sanitized and may cause the spread of disease now a few tips on keeping your dish machine please equipment varies from place to place so first study the instruction manual that comes with your machine but there are some basic rules first turn off the heater then turn the drain handle to open and drain the dishwasher tank at least once a day remove the strainer pans and overflow cover they should be cleaned of food soil preferably at the pre-rinse stand next remove the rinse arm and then the wash arms both lower and upper the wash arms must be carefully inspected for obstructions such as prune seeds two things or pieces of bone or glass these obstructions must be removed immediately by taking the wash arms apart otherwise your dishes will not get clean at least once a week clean the rinse arm spray nozzles with a paper clip like this to remove dirt or calcium deposits the overhead rinse nozzles should be cleaned in much the same way after you put the rinse and wash arms back on your machine make sure they turn freely that's it spin them now close the doors and with the drain open operate your machine to cleanse its interior finally open the machine and replace the strainer pans and overflow cover leave the doors open until the next time you use the machine this way it will get a chance to dry out and air the entire procedure is simple effective and important and you must follow the procedure carefully hey Cara must not only be taken to ensure the dishes are actually clean and sanitized care must also be taken to minimize breakage for each broken dish represents a loss of money to your management excessive threat each could eliminate profit and put you out of a job and that about sums it up you mister dish machine operator have a vital job you can be a success if you understand your job and to it well [Music] part of those smiles of satisfaction belong to you [Music] national education media they did a whole series of films about different types of hospitality jobs restaurants and some in hotels I would love to collect them all I have short order cookery mister dish machine operator and I have another one I can't remember that let me look at it real quick how about that I'm gonna look at a Wow I'm on the internet with you I have a spreadsheet well I'm sorry I have a database to FileMaker database and let's take a look national education media the care and cleaning of kitchen equipment let's see what else sandwich preparation and presentation that's different hmm well I'm don't even have yeah okay there you go uh mmm this is another how-to film and this is made for kids and this is to encourage us to begin being responsible for our actions and this is doing things for ourselves in school [Music] one morning as Steve was dressing himself he thought about something that you have probably thought about too he thought about how easy it was to tie his shoelaces this used to be hard for Steve to do once his mother had to do this for him but now he could do it by himself Steve liked to do things by himself he liked getting out the food in the morning for chipper his dog taking care of chipper was Steve's job every day later Steve had on his coat and was ready to go to school but his mother hadn't packed his lunch instead she gave him money to buy his lunch at the school cafeteria Steve liked to pay for things himself on the way to school Steve had to cross several streets he had been taught how to cross safely he looked carefully both ways and when he was sure no cars were coming he crossed at the busy corner on Main Street closer to school he waited again until the policeman signal that it was alright often we need help from others to get things done Steve saw that his teacher miss Wilson was helping Peggy but Steve like to do things himself whenever he could sometimes it wasn't easy and he thought of asking for help but when he really tried Steve found that he could do it all of us know what a good feeling we get when we do something by ourselves all of us can do more things for ourselves than we may think like Steve we can put our boots away as soon as they're off and we hang up our clothes so we can find them later when we get done instead of waiting for the teacher to tell us we can go to our seats by ourselves keeping a neat desk so we can find our things easily is something else that we can do sometimes we can help ourselves when we have trouble with our work as Steve did when he came across a word that he didn't know at first he was going to ask miss Wilson but she was busy with some of the other children so Steve tried to figure out the word himself he looked at the word and there the picture for hints he tried to think of a word that would make sense with the other words and then he knew the word was plant he had figured it out by himself of course we can't do everything by ourselves sometimes we learn to do them by watching others when Steve found a torn page in his book he didn't try to fix it he didn't know how so he took the book to his teacher miss Wilson enjoyed helping her pupils take care of things she had some tape that she used to fix the page Steve watched carefully so he might do it himself someday by watching others we can learn to do many new things for ourselves later when Steve was working a problem in his arithmetic book the point of his pencil broke he went to sharpen it but the sharpener was hard to turn it was full of pencil shavings and needed to be emptied could he do it by himself miss Wilson nodded Steve had watched once before when Miss Wilson had emptied the sharpener so this time he thought he could do it himself Oh some of the shavings spilled on the floor well we can't always do things perfectly the first time sometimes mistakes help us to learn Steve went on to finish the job after dumping all the shavings he put the case back on the sharpener then he cleaned up the floor cleaning up is another thing we can all learn to do by ourselves some jobs may seem difficult at first yet they become easy after we do them a few times later at lunchtime Steve had no trouble getting his food it was easy to find the different foods and to choose certain ones not too long ago his teacher or parents had to do this for him Steve felt proud because he could count the money to pay for his own lunch and he knew how to take care of the rest of the money his mother had given him after lunch miss Wilson had put out some things on a table poster paints and brushes they were going to paint the children had learned to arrange their papers on the tables so each of them would have a place to work and they had learned to put on their smocks so they wouldn't get paint on their clothes of course there were a few who were not quite able to do some things for themselves but they were trying with a little help from their friends of course no one can do everything well so we helped others with the things we can do best when Steve had trouble opening one of the paint jars Ken offered to help but he couldn't open it either John thought that she could open it the boys needed the paint so they let her try running warm water over the top was something Joan had learned from her mother now they could get the top off and they could use the paint so Joan had shown them something they could do next time for themselves of course we don't always have to watch others to learn to do things when Steve and the other boys and girls were ready to paint each one started by himself without looking to see what his friends were doing it's usually more fun if you paint things that you think of yourself later when the pictures have been laid out to dry Steve and the other children cleaned up they washed off their brushes put the paint and other supplies away and washed off the tables so that everything was left just as they had found it taking care of things we know helps keep them in good condition for when we wish to use them again remember how carefully Steve hung up his raps in the morning now they were easy to find Steve was able to dress himself quickly [Music] the children hurry to get home with their paintings steve was proud of his he had enjoyed painting it and he'd enjoyed the many other things he had learned to do like Steve all of us can have more fun as we learn to do new things for ourselves [Music] nice somebody commented about least he's not a mr. bungle yes this is part of that series the beginning responsibility series lunch room a nurse is one of the film's in there and this is all about trying to groom little kids brains into being more productive members of societies brains and you know that's what school is about the 3 R's is one part of it but really it's about maturing brains this next film is a it's a car crash film and this is also part of a series that uses a lot of footage that was shot I believe by USC San Diego I can't remember it's one of the USC they did an amazing series of car crash tests involving dummies and and this company basically took that footage and then they kind of reused it repeatedly to do different things about seatbelts about different types of collisions about driving safety and the footage is beautiful it's not real crashes of people it's it's all staged but it's still beautiful so here's intersection collision [Music] intersection collisions are double impact events the first impact is between two colliding structures the second impact occurs when the motorist strikes the car's interior or are thrown outside the car for the first impact factors such as speed weight and point of impact determine the structural deformation of the vehicles structural design also effects collision performance for example these wider and lower 1960 vintage automobiles show markedly increased stability against rollover compared with cars of 1950 vetti also with the modern cars lower profile the struct cars tendency to roll over by the weights are bearing however the passenger compartment is more vulnerable to intrusion by the striking car the center door post structure is one way of reduce intersection collision injury during motorists experience deceleration forces like those in a severe fall at quite moderate speeds the forces of collision are of such magnitude that even motorists restrained by left belt suffer involuntary killing with car's interior Strutters dodging earrings as majored these forces during a series of experimental collisions by post Christ data analysis the injuries to motorists for various speeds and points of impact can be estimated in the striking car 20 mile per hour front side impact the driver's head sustains a 20 G impact a blow of some 500 pounds from the unrestrained three-year-old 20 mile per hour centre side impact the child strikes the passengers head with a 22 g low 30 mile-per-hour frontside impact in spite of the lap belt the drivers chest gets the steering wheel with a force of 3,000 foot-pounds 30 mile-per-hour Center side impact the drivers lap belts load to 1600 pounds the unrestrained children in the striking car survived all these moderate speed collisions but sustained head injuries contusions and multiple abrasions over the entire body the driver who wore a lap belt also survives each collision but sustained head and chest abrasions puncture wounds and probable fractures to the skull and rib cage the front seat passenger wearing a lap belt and shoulder strap the so called three-point belt sustained only minor abrasions and lacerations in the strut car during an intersection collision motorists receive direct collision forces from the striking car drivers are pinned against the side until the car has reached full lateral acceleration then thrown in the opposite direction front seat passengers move forward as they move toward the struck side these motorists are restrained by the same devices as those in the striking car drivers left belts passenger three-point belts children unrestrained 20 mile-per-hour front side impacts after receiving a 47 g shock the belted driver's head is forced through tempered glass injuries face lacerations and abrasions survive 20 mile per hour centre side impacts the driver's head registers a 50 g blow against the tempered glass 20 mile per hour rear side impact the unrestrained three-year-old is battered against the interior bilateral collision forces multiple abrasions over entire body and face survive 30 mile-per-hour frontside impact although the drivers lap belts low to only 150-pound his head receives a 1,000 pound blow multiple abrasions and lacerations survived 30 mile per hour center side impact the front seat passenger with the three-point belt as in the previous impact sustained only minor abrasions and lacerations in this 40 mile-per-hour frontside impact no seat belt for you the driver striking the steering wheel and columns sustains a 60 g peak chest load crushing his rib cage and producing multiple abrasions to his face left shoulders and left and right legs the passenger strikes the drivers chest a 15 g blow pushing him against the left side door with his head outside the shattered window the driver now sustains lacerations abrasions punctures and a fractured ankle driver unrestrained probable fatality pinned by the accelerating forces from the striking car and the unrestrained passenger a drivers chances of survival at speeds of 30 miles per hour and above are slim in the striking car the abrupt change in direction of collision forces Ram the unrestrained passenger against the door the moving weight of the front seat torn loose from its anchorage combined with out of the unrestrained motorist / stresses the door latch mechanism the latch failure permits the ejection of the passenger he sustains a 24 g chest blow on striking the pavement and a deep laceration laying open the right side of the skull he comes to rest 33 feet from the point of impact passenger unrestrained fatality seatbelts have definitely reduced the hazard of motorist ejection when an overstressed door latch mechanism fails however though the motorists would lap belts are kept from being thrown out of the car their heads and shoulders still strike the car's interior even in the moderate 20 to 40 mile-per-hour collisions under investigation the combination shoulder strap and lap belt the three-point belt will reduce the head and chest injuries from intersection collision also under study at the University of California is the often overlooked problem of how best to restrain children against the effective collision forces the preliminary investigation has established that spatial restraints must be provided for infant and child protection in this 30 mile-per-hour rear side impact the unrestrained bassinet nearly ejects the infant to provide suitable protection during intersection collisions bassinet must be aligned with the car's long axis and securely tied down the seated three-year-old is thrown violently forward in this 40 mile-per-hour collision while in this 40 mile-per-hour collision the child is held in a safe position by her harness aside from evaluating passenger restraining devices these collisions provided a basis for safer structural design the increased capacity for doors to remain lat even when overstressed and partially sprung is an improvement common to newer automobiles but when seats tear loose and combine their inertial load with that of unrestrained motorists against the door latch failure is still common seats must be designed to withstand much greater load moderately severe collisions will develop seat inertial loads in excess of 20 G's seats should also be structured to function as a passenger protective restraint during impact further research is underway to evaluate the relative merits of different types of safety glass we now know that most motorist injuries are avoidable through information gained from these controlled collisions engineers are improving the christ' safety of automobiles by revising the structural design and when motorists wear the seat belts now standard in most cars they have take the most effective step now possible in the reduction of accidental injuries [Music] UCLA that's who it was the didn't and so that's what it shows up in a lot of places I think because it was made available and so the one with the doll the bedroom represents the girl that shows up in seatbelts for Susie and there's a whole backstory about the little girl who owns the doll and I have the doll and they travel and then they use this they intercut this footage to kind of show the why it's important to wear seatbelts which at the time when these films came out seatbelts were not mandatory they were not even mandatory in vehicles and so this is something that changed in the mid-60s I believe I did research some time ago about this and so this kind of helped make that case for having seat belts in cars because before they were a extra safety accessory that you would pay extra for all right we're all patriotic right we all believe in America and what's important for America and we're all willing to withstand an occasional broken window or two or a loud explosion sound that happens periodically throughout the day this is mission sonic boom [Music] [Music] colonel hey we have a few words with you suddenly I've been expecting you I thought you interceptor men were always in a hurry well we can move pretty fast when we scrambled to intercept unidentified aircraft I see what you mean [Music] [Music] [Music] yes we move fast on intercept missions but today in major Conroy and I have a very special mission what is that sir today we're going to demonstrate and explain sonic boom from the cockpit of a supersonic aircraft one that flies faster than the speed of sound and is designed to help us defend ourselves against other planes that fly faster than sound sonic boom is a very serious problem to the Air Force because it concerns people all over the United States major Conroy's mission will take him over least populated areas sonic boom is caused by an aircraft flying faster than the speed of sound it is not as many believe the sound the flame makes the instant it breaks the so-called sound barrier soon after major convoy reaches 35,000 feet he will exceed the speed of sound he should be there now let's check on it come in major convoy Roger in the 35,000 feet leveling off now that we're more than six miles up will sue me going faster than sound supersonic flight is a matter of routine with this aircraft flight speeds like this produced a sonic boom and there's nothing the pilot or anyone else can do about it you won't notice any change we can't hear the sonic boom because it's behind us listen now we're flying faster than Mach 1 faster than sound yes major no change in the cockpit but down below it's an entirely different matter in peacetime the Thunder like sonic boom is almost always unexpected for it comes without warning the flame that causes the boom is probably flying straight and level beyond your range of vision beyond the sound of its engine so the sonic boom is indeed on noisy nuisance unnecessary nuisance for just as truly sonic boom is the sound of security the Air Force shares with other services the tremendous task of providing protection for this nation against supersonic air attack the Navy and the Air Force must operate many types of supersonic aircraft both interceptors and bombers such as the for engine b-58 since ground noise of the Jets is also objectionable the services used several devices to reduce flight regulation minimizes public disturbance by sonic boom everything that can be done is being done short of jeopardizing the defense of the country therefore on training missions from this base hand since we're located near the ocean you will not exceed Mach 1 until you are above 30,000 feet and well out over the water of course there is extra danger for these men in training over the ocean in 40 degree water life expectancy is only two hours a 50% chance of death after 30 minutes we on the ground can help the pilots who protect us by learning to live with sonic boom just as the pilots and their families have learned to live on constant alert in defense of our country when we know it's not an explosion even though it sounds like an explosion when we know it can't hurt us other than break a window now and then when we learn to expect it we can protect ourselves from fear from the fear it engenders to do this we must of course know how aircraft caused the sudden explosive sounds called sonic boom as a foot moving on the surface of the water causes waves to fan out in two directions an aircraft in supersonic flight disturbs the air and also creates waves pressure waves but unlike the surface of the water air is a three-dimensional medium and the pressure waves spread out not only in two directions but in great cones of disturbance that reach all the way to the ground so when a plane is flying faster sound these waves of disturbed air these pressure waves travel across the ground and reach our ears as sudden explosive sounds a 1,200 mile an hour interceptor flying high and level could create a boom that would startle the tens of millions of people along the eastern seaboard in a mere 10 minutes scientific research teams and industrial firms are working on the problem but for the present we must realize that the sonic boom is unavoidable supersonic interceptors are frequently set out to identify unknown aircraft day or night urgency requires the highest speed possible the most direct routing sometimes over cities if our bombers are ever sent over enemy territory they will go in bond their targets and get out at the higher speeds possible our bomber crews must train today for this eventualities their training ground is the radar bomb scope where friendly cities industrial and military installations duplicate the probable radar returns from an enemy target we have many types of supersonic aircraft now and more to come and fortunately we have the men with the courage and the cautious judgment it takes to fly these fabulous machines of our defense [Music] when you hear a sonic boom remember it's the sound of bees are now ready to shield you from aggression noisy nuisance that it is sonic boom is truly the sound of the security [Music] such a great film and for some reason the Facebook copyright hammer came down during that film which is very odd I'm guessing what happened was that somebody used a sample in their song and copyrighted it and then Facebook decided that that that was not kosher constant problem that film is definitely in the public domain it was made for the US government by wildin Pictures who made films for the US government I've did a lot of research on this film and there's not really even music to worry about so this is what I have to deal with every day as soon as a done with a streaming broadcast then YouTube sends me three or four copyright notices about background music and sometimes they slap my hand even harder and they like with Herculoids they were like we're gonna block this unless you remove the Herculoids so that's what I did because the rest of the show was really great I kind of guessed that Herculoids was gonna do it this next film and last film is great it is a French film I believe it's French it's European but I believe it's French and I always show this is part of my naughty boys or mischievous boys shows which I've done several and this one is called merry-go-round a horse enjoy [Music] [Music] [Music] [Laughter] [Music] [Music] [Applause] [Music] [Music] [Music] [Music] [Music] [Music] [Music] [Music] [Music] [Music] [Music] [Music] [Music] [Music] what you think did you like that I there's a special place in my heart for that it's it's a very weird film I think that it's you know it's this little little tail and it's it's a lot of fun to watch there's some weird stuff in it like I think it was actually shot in a bigger aspect ratio so I'm gonna geek out a little bit and so that they do is pan and scan but they do it in a really awkward way so where you have this thing where this carp the guy with the cart with the horse on it it's going down the street and so it follows it and then the whole scene shifts to kind of keep following and that's a that's a pan and scan technique a very poor one that's very jarring to make it I guess fit in the 4x3 but yeah big fan of that film it's uh I'd be good with rocking-horse winter I think which I have a copy of and I mentioned in one of the comments that I did this part of a show called free range kids and it's basically kids that are just no parents or involved or just barely or adults involved and it's all about kids exploring the world and so for Coke Club of courses is an example of that where girls run through the streets of New York City competing in their little fur fetish I don't know if I've shown that one yet maybe if I haven't maybe I'll show that later anyways thanks for tuning in and watching what we got tomorrow I'm gonna have a special guest Melissa Dolman who's a longtime friend film archivist UNC PhD candidate who doesn't live in North Carolina anymore but is going to join us and it's going to talk about some of the films in my collection related to her PhD that are also pretty great so join us tomorrow at one o'clock for that if you like what you saw and you're on YouTube please click like and subscribe thank you for that patreon is a great place to donate to help pay for films that we've recently purchased on eBay and also buy some shelves for the collection that we got in December and of course you can watch previous shows on AV geeks com so thanks so much for joining us thank you for your eyeballs in your time and we will talk again tomorrow bye bye [Music] [Music]