AV Geeks 16mm Lunch 6-26-2025

Hi everybody. I'm Skip Alzheimer. Welcome to the AV Geeks Lunchtime streaming show where I was scrambling around to try to get somewhere quiet to do this show. Um that uh film that we just saw, it was a snippet from the perfume salesman uh which is a Leave It to Beaver episode where Beaver uh sells really stinky perfume to get a film projector. And uh it turns out the film projector is actually a regular eight film projector, not 16. And it looks like he's having problems threading it. So there you go. All right. So, we got a lot of stuff to watch today and these are things that I've been recently scanning, which is great. Um, and and it's part of moving a bunch of stuff uh back into the film vault. And uh so in doing so, I'm like, "Oo, let's pull that. Let's pull this milk crate." Uh and so that's what we've been doing. And this film is called Hopscotch, and it's beat up, but it's still pretty good. Enjoy. [Music] I'm like [Music] Oh yeah. [Music] [Music] [Music] Doo. [Music] What is wrong with [Music] you? [Music] party launch. [Music] Yay. Stop. [Music] [Music] [Music] Baby, baby. [Music] Boom! Hello I don't know. You [Music] [Music] [Music] Mama [Music] Oh no. [Applause] Yeah. Well, maybe [Music] I have to Wow. Ow. Oh, wow. [Laughter] [Music] Get out. Get out. Oh, that's [Music] boy. Oh my god. Yeah. Yeah. Hi. [Music] I don't know. No one [Applause] follows. [Music] All right. All right. Three, four, That's pop. Okay. Did it vroom vroom beep beep beep beep [Laughter] Mountain. [Music] [Laughter] [Music] Wow. That was uh Yeah. Um, so initially it reminded me of the um, wow, suddenly I just forgot their names. The FA the Hubi films where they recorded their kids talking and then edited it together and then animated around it. But this was actors, voice actors. I mean, June For is not she's a seasoned voice actress. And wow, that was something else. Crazy. So, uh, this next film is not, um, non-verbal. It does have a soundtrack, and I've shown this before, but we just did a scan of it. Um, and uh this answers the question, what if your house was under uh constant assault from a French ghost who was very negative uh that would kept trying to burn your house down. This is help prevent fires in French. Enjoy. [Music] [Applause] [Music] [Music] [Music] Ailford. Ailford. Akila food. No, no. No, the fume basi. [Music] No, no, no. [Music] Leaper the gasoline explosive. [Music] [Music] [Music] No pass. [Music] [Applause] No, the show pal. [Music] Corre. Corre. P. Cory [Music] [Laughter] Noisto. [Music] [Applause] [Music] [Laughter] [Music] [Applause] No jammed. Fore! [Music] Foreign! Foreign! [Music] Shak. [Music] [Applause] [Music] Thank you. [Music] Ber [Music] just fish. [Music] [Music] We sil. Clip them to tail. [Music] [Music] [Music] perfe. Hey, Shy. [Music] [Music] [Music] A fair [Music] [Music] brau. [Music] [Laughter] Flid don't petrol. [Music] I saw the Ve [Music] ask me if I'm still actively looking to get films and that is a film that I'm hoping to find in better condition than what I currently have. Um, I'd love to know more about this film and who made it and it is for me it's real good. It's And this was what like in that first batch of 500 that I got for 50 bucks where I was like what is going on? It was really pretty amazing that that first batch. I'm still referring to it, still showing films from it. Um, so all right. Uh, this is another film I showed five years ago. Um, and so, uh, it's due. We're due to watch it again. And of course, this came up in the, um, in the FS that we've been moving to the new film vault. Uh this is front end loader safety. No songs though unfortunately. Enjoy. The rising need continue their drive for greater productivity. But as often happens in rapid industrial progress, a big advance in one direction sometimes results in a bigger setback in another. In the case of materials handling and hauling in service mines, production is increased with the introduction of larger capacity front-end loaders and trucks. But at the same time, the number of operator incurred accidents is also increased. [Music] [Music] Nearly 1/2 of the total surface mine and mill fatalities that occur involve polage vehicle. such as this front end loader. From the operator standpoint, the front end loader has proved to be one of the most hazardous pieces of equipment being used in the mineral industry today. [Music] [Music] Although the primary cause of this accident was the operator losing control of the vehicle because of lack of training and experience with this particular type of loader, the accident investigation disclosed other contributing factors. Excessive speed, inadequate BM, and operators failure to wear a seat belt. Not wearing the belt greatly contributed to the severity of the accident, turning what might have been an injury or less into a fatality. In an emergency, most operators will tend to act instinctively and reflexively. And if they had previously operated another model with different controls, they are very likely to find themselves confused and in trouble when trying to operate a new or different machine. [Music] Therefore, it is important that front-end loaders be operated only by persons competently trained and authorized to handle the particular model being used. It is also important that machines be used for the purpose for which they were designed. Unauthorized use and misuse of the frontend loader has accounted for an alarming number of fatalities. For instance, using a dipper or bucket as a workstage or platform is not a safe practice. [Music] Another [Music] [Music] example of misuse of a front end loader is that of pushing other vehicles. An operator was fatally injured while steering a disabled frontend loader. A second frontend loader was pushing against the counterweight of the first machine when the bucket slipped over the top, pinning the driver. If a loader or other disabled mobile equipment cannot move under its own power or whenever towing is necessary, a rigid, properly designed toe bar should be used. Still another recurring and hazardous example of equipment misuse is the unsafe practice of riding in the bucket of a front end loader. How about a ride in the shop? Sure, hop in. The law and good common sense tell us that men should not ride in buckets or hollage truck beds for the purpose of transportation. Using the loader as a means of transporting men is usually asking for trouble. [Music] [Applause] [Music] [Music] Lack of common sense leads to unsafe work practices which in turn is the leading cause of almost all mining accidents. [Music] Recently, a front-end loader operator at an open pit sand and gravel mine was involved in an accident that could only be classified as a case of dangerous work practice. The front end loader's job was to load sand and gravel into trucks for hollage to the construction site. [Music] After loading a hollage truck, the loader operator moved his machine toward the highwall where sand and gravel was mined from a single 35 to 40 ft high bench. Either a bulldozer pushed the material down from the wall or it was allowed to cave naturally. The loose and unconsolidated high wall was not sloped to the proper safe angle or repose and therefore was dangerous. [Music] Company safety rules specified that the high banks be pushed down from above with a bulldozer and that material was not to be mined directly from the high wall with a front end loader. Federal regulations also state that men shall not work near or under dangerous banks. [Music] The operator knew the company safety rule against using the front end loader for mining the highwall and he should have had enough common sense to stay away from a dangerous bank. [Music] [Music] Unsafe, dangerous work practices waste time, damage equipment, and above all, risk human lives. Lack of training and experience are also serious contributing factors to many front-end loader accidents. This was vividly brought out at one sand and gravel operation where a new employee was assigned to operate a front-end loader, a machine he had never used before. Okay, Ron, here's your starter switch, your bucket controls. This is your roll back. This is your hoist. Is your transmission forward and reverse? Is your gear shift on it? You think you've got that? The young man had had some experience as a truck driver and seemed mechanically inclined at handling machinery. So, the pit foreman instructed one of his more experienced heavy equipment operators to work with him until he was able to operate the front end loader by himself. Okay, go ahead and try it. The heavy equipment operator, who had never had formal instruction or safety training on the equipment himself, observe the new man operating the loader. [Applause] [Music] After watching briefly, he left to return to his regular duties at another pit. The new operator continued the job of feeding the hopper. [Music] [Applause] [Music] [Applause] [Music] Even though an individual at first appears confident when operating new equipment, he may not always be sure of the control positions on the machine. Therefore, at a critical moment, he may through reflex action push the controls in the wrong direction causing an accident. This is the main reason for a thorough training program for drivers taking out equipment with which they are not familiar. He seemed to be doing all right for a while when suddenly [Music] many of the mistakes he made, his failure to maintain control of the vehicle, operating too close to the edge of the ramp and cutting the wheels too sharply were due to lack of experience or training in frontend loader operation. This accident also indicated some negligence on the part of the supervisor for assigning the man to a machine he wasn't trained or qualified to operate and for not seeing that adequate BMS were provided on the outer banks of elevated roadways. Elevated ramps or inclines leading up to dumping points are often sloped too steeply. If the ramp was leveled off at the top for a distance of 1 and 1/2 the length of the loader and the angle of incline held to the recommended 10% maximum with sloping sides of 30° or less, it would add to the operator's visibility, maneuverability, and safety. And if adequate BMS were constructed along the edges of the ramp, the overall safety of dumping operations would be greatly increased. You got your bucket in the air. You don't want to travel with your bucket. Past investigations have pointed up the necessity for rollover protection and seat belts. But most significantly, they have emphasized the critical growing industry-wide need for all mine and mill operators to establish a definite effective continually functioning safety training program for their company and to make every effort to prevent accidents by having their employees actively participate in the program. Give you a little better protection that way and keep you with a large segment of our mining industry is dependent on the front end loader. Therefore, if accidents are to be prevented, proper safety training and instruction of the operator is of the utmost importance and should be started now. [Music] I think a song would have been better. Um, but not bad. Not bad at all. Um, pretty entertaining actually. The uh the catastrophes. All right, what do we got next? Um, so this one is at some point I I was going to Troy, New York to do shows and um, uh, Rensler Polytenic Institute basically heard that I collected films and they're like, "Do you want all these films?" So they sent them to me or I actually picked them up in a van and brought them back to Raleigh. Slowly I've been going through them and so um, they have a variety of different things. uh some uh internally made films, some things capturing kind of news events at uh the university. This is uh points and lines. Enjoy. A point is a unit of form. When points are aimlessly scattered, they hold no particular interest. It is only when we recognize and understand a pattern in their arrangement or consider their movement that these combinations of points challenge our minds. The changing patterns of such points as stars in the sky have always fired man's imagination. Although this film is not an attempt to search for the why of the movement of points, we will consider how the lines formed by such movement should be observed for us to see their various characteristics. A point may move through space in a completely random manner forming no pattern which would enable us to predict its future behavior. A point may also move through space in a controlled manner generating line paths with precise mathematical characteristics. For example, the point generating this line path for an ellipse has precise predictable positions which may be computed from previous positions. Another line with precise mathematical characteristics is formed by controlling the generating point at a constant distance or radius from the origin. If we increase the radius of this circle an infinite amount, a short segment of this infinitely enlarged circle may be called a straight line. There are other theoretical lines which have mathematical equations. All these lines have predictable conformity and are generated by the mathematically controlled movement of the generating point. The development of lines with mathematical predictability is not limited to the movement of a generating point. Controlled lines may also be cut from theoretical surfaces by slicing methods. Lines lacking in precise predictability of new positions may be cut from surfaces not conforming to theory. For example, if this natural surface is cut by a series of planes, irregular lines will result. These lines are not mathematically predictable, although they may be plotted by coordinate methods. These irregular lines as well as numerous other theoretically controlled lines such as the parabola, hyperola and sine wave are called planer lines. In addition to planer lines, we will include in our consideration one example of a space line, namely the helix. To construct a helix, we may begin by drawing a straight line diagonally across a rectangular plane. When this plane is viewed from the top, the line appears shorter than its true length. When the plane containing the line is wrapped to form a cylinder, the line now appears as a circle. By rotating the cylinder to a vertical position, the line which was originally a planer line has by controlled bending become a space line called the helix. Several turns of such a helix when made of spring steel may be found in many applications as illustrated by the helical spring of an automobile wheel suspension. This baseline is a three-dimensional form where the locus of the point defining the line revolves uniformly around an axis and at the same time moves uniformly parallel to the axis. With this general introduction of line forming, we are now ready to learn the names and properties of straight lines and how they may be viewed to see true lengths, true slopes, and when they appear as points. You are already familiar with this two-dimensional system for planer points and lines. In a three-dimensional system, the axes may be replaced by reference planes and the images of the points and lines are then used. Consider points A and B and their image or projection on the horizontal image plane, front image plane and profile image plane. The names horizontal image plane, front image plane and profile image plane are assigned to the principal planes. To illustrate this naming and viewing of lines, we will consider the edge lines formed by the intersection of planes of a portion of this house. AB is a horizontal line and will be projected onto the horizontal image plane in true length. When viewed from the top, AB appears in true length. If AB is viewed from the front, it will again appear in true length. This is so because line AB is parallel to the front image plane. AB is called a frontal horizontal line. AB is projected onto the profile image plane as a point viewed from either side. We see AB as a point. BC is a vertical line. It is seen from the top or plan view as a point. When we view BC from the front, it appears vertical and in true length. If BC is viewed from the right side, it will again appear vertical and in true length. BC is a vertical line. B D is a sloping line. Viewed from the top, BD appears shorter. From the front, line BD appears in true length because it is perpendicular to our lines of sight and parallel to the front image plane. The angle BD makes with the horizontal is called the true slope. Observed from the right side, line BD appears shorter and vertical. If we assemble these three lines, you will observe that they all lie in the same plane. That is the lines are parallel to a front image plane and appear as an edge when viewed from the side and the top. Any of these lines projected on the front image plane appear in true length and true slope. These are all frontal lines and all lie in a plane called a frontal plane. Be is another horizontal line which appears in true length from the top as a point when viewed from the front and in true length when viewed from the right side. AE is an imaginary horizontal line and like BE or any other horizontal line will appear in true length when viewed from the top. EF is a sloping line. When viewed from the top or front, it appears shorter than true length. It is only when we view this line from either side that it appears in true length. True slope may also be measured from either side if the line appears in true length. Now if we assemble lines BE, EF and BC, you can see that they all lie in the same plane. This plane appears as an edge from the top and front views. This is called a profile plane. The lines on the plane or parallel to it are called profile lines. Such lines reveal their true length and true slope when viewed from either the right or left side. Another type of line which must be considered is the oblique line. The oblique line is not horizontal, frontal or profile. Since it is not in or parallel to any of the principal image planes, the line EG does not appear in true length in top, front or side view. Thus, true slope will not be seen in any of these views. If we can view this line from a position where all points on line eg are the same distance from the image plane, you can then see the true length. If this image plane is a vertical plane, you will also see the true slope of line eg. Further consideration of this line will reveal it as a point when the line is projected onto an image plane to which it is perpendicular. Let us review these lines while you try to imagine the correct viewpoints from which to see the true lengths, true slopes and point views. Will you also visualize the proper image planes and their relationship to each other? First consider the horizontal lines. Second, the frontal lines. Then the profile lines. In conclusion, consider the many lines, all of them generated by points that you see around you every day. To represent these lines so as to evaluate their location, position, and magnitude, you must remember how lines are formed. Remember also the names of straight lines and how to see them in true length and true slope and as points. So, what I want to do is take the soundtrack from Hopscotch and from uh the French Help Prevent Fires film and just overlay that on top of the visuals for um for this uh points and lines film. Boy, woo, that was uh that was pretty obtuse. Um, but you know, it's fine. We have other films uh from that series that we will probably introduce uh that are probably just as tedious. Um, but you know, that's kind of the nature of AV Geeks. Sometimes you get uh over-the-top like, holy cow, what is going on, amazing soundtrack, and then sometimes you get just some guy talking about points and lines. Uh we're going to end with uh this this film um part of the human body series, the respiratory system. Joy. [Music] For you to stay alive, there must be a steady flow of oxygen into your body and a steady flow of carbon dioxide out. This exchange of gases is the work of your respiratory system. The energy that moves you, that keeps your body functioning, that keeps your trillions of cells alive, that keeps you alive, is released by oxygen from the food you eat. There's more than enough oxygen in the air around you. Most of it comes from green plants, a waste product of photosynthesis. You draw oxygen into your body by breathing. The process of breathing involves the work of your lungs and the flat sheet of muscle under them, the diaphragm. Breathing begins with signals from your brain. You breathe in when clusters of cells in the medela of your brain send nerve impulses to the muscles attached to your ribs and to the diaphragm. The rib muscles contract, lifting the ribs up and out. The diaphragm contracts and flattens. These two movements increase the space inside your chest and stretch your lungs. Air pressure in your lungs then drops below the pressure of the air around you. So, air rushes in. This brings about 10% more air into your lungs than there was before. you have breathed in. Nerve cells in the lining of your lungs sense this stretched condition. They fire impulses back to the medela and the cell clusters there switch off the impulses that contracted your rib muscles and diaphragm. These muscles relax. Your elastic lungs recoil a little and about 10% of the air in them is pushed back into the air around you and you have breathed out. And so about 10% at a time, the air inside your lungs changes. When you're at rest, the cycle repeats about 15 times a minute. Now let's see how the oxygen you breathe in gets to your cells and the carbon dioxide gets out. The journey begins through your nose and mouth. Air enters carrying its oxygen load. The moist inner surfaces of your nose and mouth moisten the air and the warm blood that flows through the capillaries that line these surfaces heats the air. The surfaces are also covered with a sticky mucus that traps some of the tiny particles suspended in the air. Other particles drop out of the air as it loses speed. The passageway at the back of your nose and mouth divides into two tubes. One, the esophagus, is part of your digestive system. It leads to your stomach. The other is the trachea. It's part of your respiratory system and directs the air you breathe in toward your lungs. The entrance to the trachea is guarded by a muscular flap, the epiglatus. As long as you're breathing, this flap stays open. But as soon as you start to swallow, it automatically closes, covers the end of the trachea, and usually prevents anything except air from entering the trachea and getting to your lungs. The trachea is a soft tube, but it's supported and held open by rings of cartilage. Here you can see where the trachea separates from the esophagus [Music] and how the rings of cartilage give the trachea its shape. The trachea is lined with tiny hairs, psyia, that are surrounded by mucus. These psyia vibrate, waving about 20 times a second, sweeping more particles out of the air and trapping them in the mucus. The waving motion of the psilia carries the particles back up towards the throat where they are swallowed and disposed of by the digestive system. The air that has been cleaned, warmed, and moistened continues down the trachea or windpipe as it's often called. The trachea then divides into two smaller tubes called bronchi. Each bronchial tube divides into smaller tubes that enter the lungs. Inside your lungs, these tubes divide and subdivide until they are microscopic in size. Now they're called bronchioles. Air that you've breathed in travels through these small tubes to grapeike clusters of air sacks at their ends. The alvei. The alvei make up the inner surface of your lungs. There are about 300 million of them with a combined surface area of about 70 m, some 600 square ft. These tiny air sacks provide the large surface area that the trillions of cells of your body need to get their supply of oxygen from the air. Each air sack or alveis is covered by a thin film of fluid and patrolled by white blood cells fagasittes. Fagasites engulf and remove intruding matter. This intruding matter along with mucus that also traps the dirt from the air is passed back up the airways by the movement of psyia then eliminated from your respiratory system. The oxygen in the air that has entered your lungs now dissolves into the fluid that covers each alveis. The dissolved oxygen passes through the cells that form the thin walls of the alvei and then passes through the equally thin walls of the capillaries that line the inside surface of each alveis. This movement of oxygen is a process called diffusion and it works this way. When the pressure of the gas on one side of the cell membrane is higher than on the other, the gas will move through it until there is the same pressure on both sides. But if the gas that gets through is constantly removed, the pressure never equalizes and the gas keeps diffusing. And this is what happens in your lungs. Oxygen that passes through your alvei into your capillaries is constantly being carried away by your blood. When oxygen enters your blood, nearly all of it is transported by the hemoglobin in the red blood cells. Hemoglobin is a complex ironbased molecule that turns red when it unites chemically with oxygen. This is what gives blood its red color. Your blood flows through a web of tiny capillaries carrying its load of oxygen. The capillaries merge into tiny veins that merge into larger ones that take oxygenated blood back to your heart. [Music] Now, your heart pumps the blood with its oxygen into arteries that carry the blood to all parts of your body, eventually reaching capillaries so small in diameter that only one red blood cell at a time can move through them. [Music] Now, a difference in pressure again moves the oxygen, this time out of the blood. It passes through the thin capillary walls into the fluid surrounding the cells and then into the cells themselves. And so the first big job of your respiratory system has been accomplished. Oxygen from the air has reached your cells. In your cells, the oxygen participates in chemical reactions that release energy from the nutrients there. One of the waste products of these reactions is carbon dioxide. And now the second big task begins, removing that from your body. First, the carbon dioxide passes out of the cells and through the walls of the capillaries into the blood. Much of this gas unites with chemicals in the hemoglobin and stays in the red blood cells. But more than half of the carbon dioxide is transported by the plasma, the watery portion of the blood. Your circulating blood carries the carbon dioxide to your heart and then through it to your lungs. The blood flows back into the capillaries that surround the air sacks, the alvei that make up your lungs. Now carbon dioxide leaves your blood passing out through the walls of the capillaries and the walls of the alvei. The carbon dioxide enters the air inside the tiny alvei and then squeezed from there into the quarter million bronchioles. The air retraces its path up the bronchi to the trachea. You breathe it out and the second big job of your respiratory system is done. The amount of carbon dioxide in your blood controls the rate and depth of your breathing because nerve cells in the medull of your brain are sensitive to your blood's carbon dioxide content. When the level of carbon dioxide rises, nerve cells send impulses to your rib muscles and diaphragm. the rate and depth of your breathing increase, increasing the rate at which carbon dioxide can be eliminated from your body. The level of carbon dioxide in your blood also controls how fast your heart beats and therefore how fast blood is moved through your circulatory system. When the increased activity of your heart and lungs has lowered the level of carbon dioxide sufficiently, then the rate of nerve impulses is slowed and so is the pace of your heart and lungs. Just before the air leaves your trachea, it passes the vocal cords. Two fibrous strands in your larynx that stretch across the passageway. Air moving past your vocal cords can make them vibrate and produce sounds. The muscles that tighten and relax these cords can change the pitch of the sound they make. This sound can be changed even more when you move your tongue, lips, and jaw and change the shape of your mouth. All this makes speech and song. The carbon dioxide you breathe into the air is recycled by plants. And so the cycle continues. You breathe, you speak, you sing, and the work of your respiratory system goes on. [Music] If nothing else, that soundtrack was awesome. Um, but some of the animation also was kind of a sparkly discoy looking uh film. Thanks, Cornet, for that. And thank you guys for uh watching. Uh thank you Nathan for contributing via the super thanks button which is an option in the YouTube comments. That money will go towards buying milk crates. I'm using milk crates to transfer films from point A to point B. Um because they are easily carried, easily stackable. Um, and they I have used tubs in the in the past, big tubs, but they're so heavy that uh it's just not worth it. So, and I've also used banker boxes, but after a couple of uses, they deteriorate. So, we're back to milk crates because they tend to be a pretty easy way to get things in and out. Um, so yes, that will donation will buy some milk crates. We're also um shuffling some shelving. We're doing a bunch of other things and people are asking me like when and how can I help and I'm still trying to put together. There's a lot of logistics and I'm trying to figure those out. Um but it will probably be in July that we'll do some big pushes. Uh once we kind of get some things kind of moved and shuffled then um then I'll start doing some more asks. But um thanks for watching. This is very much what I realized uh over the last week and a half was uh my assistant was not here. He was on vacation and so I had to I got to do a lot of scanning downstairs and sharing them pretty quickly after I um scanned them. And that is what I enjoy doing. I enjoy showing you these films that we just scanned from our collection. Uh, and I will continue to do so until YouTube explodes or my heart and brain explode or the scanner explodes or something explodes. Um, unfortunately probably what will happen will not be an explosion. It'll just be a whimper of some sort of, but I will continue to do it because this is why I collect is to show to people like you so you can go, "What? What was that?" or other things. But, uh, thank you for watching. If you like what you saw, hit the thumbs up, subscribe. Uh, you can pay us, uh, kofi.com/avgeeks, patreon.coms. um or just watch other things. Thanks so much. We'll be back again tomorrow, Friday, everybody. Take care. We'll see you soon. Bye.