AV Geeks 16mm Lunch 1-26-23

foreign foreign hi everybody I'm skip Alzheimer welcome to the AV Geeks lunchtime streaming show where we watch old 16 millimeter films and that was uh from the Mogul Brothers collection excuse me trip on the uh Elba River um Mogul Brothers of course uh was a film uh library that you could rent films from in New York City and uh a lot of them ended up at the Oregon archive in Pittsburgh and others ended up at the Library of Congress and supposedly there's more in New York City that we are going to try to get scan and then ultimately donate them all to the library at Congress because they're it's fascinating stuff there but you know we'll scan them and put them on our site before so you get to see them before um they end up there that's the the value of Av Geeks I don't know you get to see these obscure films from the 20s and 30s that are silent and just barely home movies I'm not sure anyways uh that that was a type of geography film this one is a more up-to-date and by more up to date I mean maybe 10 years later uh made by Encyclopedia Britannica featuring our good friend narrator James Brill so this is Peru people of the mountains enjoy in Lima the capital city of Peru centers the administration of a republic rich and historical background established by Pizarro more than four centuries ago Lima was for years the dominant city of all South America even today it is the nerve center of Peruvian politics Commerce finance and education its citizens largely of Spanish lineage have much in common with modern city dwellers the world over in Lima or found the banks of international trade here too are the offices of modern business Enterprise typified by the headquarters of a telephone concern representative of another function of Lima in Peru's National Life is the University of San Marcos founded in 1551. a proud and impressive Metropolis is Lima with its stately homes and imposing public plazas rich in historic lore but in the remote High Andes of Peru there are remnants of another earlier Glory where silent crumbled ruins bear witness to a vanished age in these mountains once dwelt the Incas proud rulers of a vast Indian empire strong and immense where the fortresses they built to guard the paths of Empire from the foe tooled stone untooled stone they reared their massive citadels throughout the central Andes the stones have endured the stones of fortresses and of Imperial dwellings these have remained but the civilization which flourished here vanished long ago long before the ships of the white men touched on South American Shores the life of a far-flung Empire centered here advanced in the Arts of War and Peace the Incas administered from Mountain strongholds the Affairs of a highly organized Society the Spaniard came the Incas fell only ruins remain ruins and hapless descendants of a once proud Indian people in Cusco the Inca capital a monastery now stands upon masonry once the Inca Temple of the Sun where his forebears passed in proud procession the present-day Indian makes his indifferent way yet Cusco is still an Indian city the Empire passed the people have remained threading narrow streets bordered by masonry reminiscent of past Glory they still adhere to ways tradition has preserved life goes on the marketplace brings together those who buy and those who sell ever prominent are corn and the potato which spread from Peru around the world there are blankets woven on Native Looms there are sandals made from discarded automobile tires far from populist Cuzco out in the broad reaches of the plateau are the communal Indian Villages of even more traditional patterns in one such Village is the home of the pachukudic family A dwelling of adobe thatching and occasional patches of tile today grandfather Patrick sits quietly near the doorway chewing the much relished coca leaves the approach of a village boy leading a llama a favorite beast of burden in the Andes evokes but a listless response though in his youth grandfather II set off on many an arduous Trek to distant Mountain villages in the fields other members of the pachukudic family have long been busily at work planting is underway the dry Earth of the plateau is first turned up with primitive foot plows plows ancient in design and used in time-honored fashion in the wake of the foot plows father guides his team of oxen making the furrows in which seeds are planted plodding along laboriously and slowly The Oxen draw the ancient wooden plow made from a tree Fork in the furrow Alta a daughter scatters fertilizer and Maldo her brother completes the planning plowed fertilized and planted the pachakuric fields will yield up corn and potatoes Staples grown here through long centuries the arrival of a water carrier in the field brings a welcome pause from a native earthenware vessel into a cup likewise a product of local handicraft the cool water offers needed refreshment after the long morning of work in the fields and now with the crude tools temporarily laid aside the family prepare for their midday meal a meal eaten in the open with the Earth itself serving as a table from a large earthenware pot mother serves out bowls of vegetable stew in which the ever-present potatoes are a major ingredient following customary practice apuri her son eats the mixture without benefit of fork or spoon each one drinks the nourishing liquid directly from his dish in their eating habits as in their agricultural methods the family reflect the ways of a people who have long lived close to the soil meanwhile in a pasture not far away the wife of a Puri tends a flock of llamas nor is her attention directed to the animals alone on a small hand Loom of traditional pattern she weaves a strip of belting incorporating a conventional Indian design with very colored Yarns thus in field and pasture the patakuric family reveal a traditional division of labor likewise those who remain in the village pursue their respective specialized tasks today as in centuries past the women of the Andes Villages prepare the yarn for Homespun clothing the techniques of a machine age have yet to make their inroads hear where the ancient waves suffice just as a poorly's wife Plies her hand loom in the field Other Women of the village sit all day at larger Looms with eyes intent on the work at hand they fashion the yarn from the spindles into Fabrics clothing must be strong and warm in the cold climate of the high Andes like all members of the village community the butcher too has his special work but meat is a minor part of the diet for a people who depend cheaply on potatoes and corn laboriously ground Baker butcher Weaver spinner and grinder of corn all make their contributions to the closely knit Village Life a life centering largely around the marketplace and here is in field and home food is the major concern potatoes nearly harvested and others preserved through freezing are ever present in the produce of the fields in colorful native headgear and in the market itself the ancient pattern of things continues to find expression toward evening apori's wife leaves her unhurried flock back across the Tranquil Plateau to the Village from the village in the morning to The Village at night such is the rhythm of routine for those of the community who till this oil or tend the flocks of llamas another day will bring another repetition of the old familiar round followed in the village through the years the plows put aside today will be taken up once more on tomorrow's return to the fields corralled for the night close by the living quarters of the Family itself the llamas will wait another day of Grazing In pastures centuries-old for a season most of the men of the village depart to work in mines or on plantations they leave the women to climb the rugged slopes to work in the fields it is the women who bring the village crops to maturity among the high Andean mountains they are aided in this work by native llamas and by sturdy plodding Burrows reminiscent of the Spanish Conquest centuries ago at Harvest Time across the bridge that leads to the outside world men of the village begin returning home from their work in the white men's minds and plantations in this return to their ancestral Mountain Homes they answer the age-old call of the clan reunion with their families sharing together the Harvest from the soil from strange places of the outside world gifts are brought back for the women folk and experiences of past month recounted the celebration includes a pilgrimage to Cuzco where natives from the surrounding mountains come from marketing and for friendly reunions takuzco built about the imposing Cathedral whose tower has sent out its call through the centuries centuries since the white man brought a new religion to the land of the children of the Sun in cusco's Marketplace the visitors gather to buy to sell to barter here Elders from The Villages meet to exchange local gossip and to chew the popular coca leaves in their faces is the story of a people who have survived centuries after a Spanish Conquest a people with the heritage of an ancient Indian culture whose glories are dimly echoed in many a crumbling ruin sets Darkly against the Eternal Andes uh so uh somebody pointed out this was a uh earpie film an earpie stood for was it electrical research something something Western Electric um let's see if I can look it up while we're talking because that's really what we do um oh nowadays it stands for enterprise resource performance Incorporated but that's not what it is rupee electrical research Products Incorporated and um at one point I saw a film that credited w E herpy I was like is that someone's name no we stands for Western Electric uh but what happened was when Encyclopedia Britannica got acquired by University of Chicago they bought it from Sears uh so here's Roebuck they started realizing that uh educational films were a value and so what they did is they actually bought the earpie most of the earpie films and then the Emerson films I think and maybe some of the Eastman teaching films and then they started their own brand and they brought James Brill with them so James Brill was the voice of Encyclopedia Britannica for quite a while uh let's see so behind me is a film scanner we got a film set up and that's when the title is River's home but I don't I watched a little bit of it I don't really know what this is about so that's why we watch these films so here's River's home enjoy foreign [Music] foreign energy all energy comes from sunlight and the ocean has this whole uh flock of organisms that the Plankton the algae of the ocean that that produce uh energy from the sun right in a marsh like this you can see a tremendous amount of energy being produced from the Sun the grass is growing into a tremendously and it will produce a lot of energy and this energy is excess because in the in the sense that it is not used here this is how Dr Charles Krebs marine biologist experiences the world of the marsh the ocean itself has to depend on its energy from the land but most of the nutrients that go into the ocean are come originally from the land obviously they've then used and reused and recycled and used the energies flows constantly I'm looking across it and seeing the different textures and colors which are to me a very aesthetic experience that I can see the commercial value in it but I can I I am most impressed myself with the aesthetic values I enjoy observing Birds you know mating I enjoy observing Birds fishing and watching eels swim and seeing crabs fight [Music] foreign [Music] for a lot of animals that I enjoy observing it provides a setting to put these animals in [Music] foreign [Music] from the very beginning of time of the March it was a quite a dynamic interaction with the Spartan Altoona Flora the high spartina the high Marsh Grass moving along the edges of a shallow envainment and by the resistance to the Salt Water their ability to spread by rhizomes which are horizontal Roots as they send out a root and then they send up shoots all along that route by spreading seaward and then of course slowing down the water dropping sediment causing the buildup of sediment raising the ground higher they could then just keep hurry map save a Mark should we see that it looks very much like a human sweat gland under a microscope it has uh usually one or two major channels going into it and this breaks down repeatedly into form many small channels and these are in turn drain in many small ponds of these small Pines these shallow water habitats with very rich nutrients with a lot of things growing provide the the home or the nursery you might say of of a lot of young fish during low tides the numbers of small mullet and striped bass that are in the large channels and just offshore and then as the tides come in they come and feed on the younger and smaller fish that are in the marsh [Music] foreign [Music] foreign River has two potentials as a river is a has an aesthetic potential just being there um there's some tension issues with this and I know this is going to break your heart but we're going to move on to another film what is uniform motion all right this jet is traveling with a uniform motion what does that mean it means two things one that the jet is traveling in a straight line and two that the speed of the jet isn't changing its car is traveling with a uniform motion [Music] is it moving in a straight line yes it seems to be is it traveling at a speed that doesn't change yes it is the car is moving in a straight line and it's moving at an unchanging speed that means it's moving with a uniform motion what if the car continues traveling with this uniform motion for several hours how far will it go each hour well it seems logical to think that it should travel 60 miles every hour [Music] when an object is traveling with a uniform motion it travels equal distances in equal times in this case 60 miles each hour we can prove that this is a bag of chalk dust the chalk bag will hit the road once every time the wheel makes a complete turn so the distance between chalk marks is the distance the car travels each time the wheel makes a complete turn if we measure between the chalk marks we find that every time the wheel turns around once the car travels the same distance now we substitute a light for the bag of chocolate every time the light hits its lowest point the wheel has made a complete turn that means that the car travels the same distance between every two successive low points of the light the speed is holding steady and the car is traveling in a straight line that means that it's traveling with a uniform motion and that should mean that it's traveling equal distances in equal times is it you can tell by the Rhythm that each turn of the wheel takes the same amount of time and we've already seen that each turn of the wheel measures off in equal distance the car is traveling equal distances in equal times you can check that for yourself by watching the dotted lines go by these lines are painted on the highway equal distances apart they're going by at a regular rhythm the car is traveling with the uniform motion an object traveling with a uniform motion travels equal distances in equal time why is it important to know about uniform motion it's important because the natural way for an object to move is with a uniform motion for example this rocket is traveling with a uniform motion as a matter of fact the men guiding this rocket could make it travel in a straight line moving at an almost unchanging speed for years and years without ever turning the motor on again that may be hard to believe but we can prove that it's true to start an object moving you need a force a push for instance on the other hand once an object is moving it has a tendency to keep moving in fact once you're moving it's sometimes hard to stop but the Curious Thing is that even if you hadn't run into the gentleman eventually you would have slowed down and stopped anyhow now just as it takes a force to start an object moving it also takes a force to slow a moving object down what force is slowing you down now the car will stay motionless until some Force moves it foreign the force of the motor is moving the car now the motor is no longer supplying a force to make the car move but the car continues moving why because a moving object has a tendency to keep moving even if a force is no longer pushing it but eventually the moving object does stop why a force stops it that force is friction this surface is covered with sandpaper the bottom of the wooden block is also covered with sandpaper a force starts to wooden block moving but it doesn't move far it's stopped by friction the friction is caused because the two surfaces are rough as one surface moves past the other the rough Parts hit against each other here's a polished metal weight it's so smooth you can see your face in it this surface is also polished metal but stop the weight friction these two surfaces are poly smooth how could there be friction between them this is the surface of a polished piece of metal seen through a microscope it's far from smooth there are no surfaces so smooth that there won't be some friction if they are rubbed together we can reduce friction by lubrication this is a lubricating oil it moves farther but still friction stops it here are two smooth surfaces plastic and Polished wood but they're not so smooth that there's no friction between them with the balloon added there seems to be much less friction between the plastic and the wood air from the balloon is coming out of this hole the plastic disc is actually resting on a thin cushion of this air see how easy it is to slide a piece of paper in and out the air doesn't make the disc move but it does provide lubrication there will be very little friction now between the plastic disc and the surface of the bowling alley click move when there is very little friction to slow it down it moves in a straight line and with a fairly steady speed it moves in other words with an almost uniform motion until there is a force to stop it [Applause] thank you a human Cannonball is a moving object but he doesn't travel with a uniform motion [Applause] foreign first of all he slowed down by friction with the air and he doesn't travel in a straight line either that's because the force of gravity is constantly pulling him down towards the Earth [Applause] what would happen to the human Cannonball if there were no friction and no gravity on Earth [Music] if there were no friction with the air to slow him down and if there were no gravity to pull him towards the Earth he would travel in a straight line at an unchanging speed that is to say he would travel with uniform motion [Music] what happens to the rocket when the engine is turned off now there's no Force pushing on the rocket making it go forward but like all moving objects the rocket tends to continue moving and out here there's almost nothing to slow it down or cause it to change its direction there's practically no atmosphere to rub against and cause friction and there's not enough gravity to pull hard enough on the rocket to force it to change its direction and so the rocket continues moving ahead with an almost uniform motion the energy of the rocket motor is used to produce Force to push the rocket up against friction with the Earth's atmosphere and up against the forces of the Earth's gravity [Music] once the rocket is free from friction with air and relatively free of the pull of gravity the motor can be shut off and the rocket will continue to travel with a uniform motion for millions of miles it will keep coasting like that until it meets some force that slows it down um that last bit about the human Cannonball I mean anything that has any film that has human Cannonball footage in it big fan uh so while we're in space uh because we don't have gravity or friction let's learn a little bit about uh space navigation uh thanks to NASA enjoy [Music] on Earth do we move between points which remain fixed relative to each other but in our solar system all bodies are in continuous motion [Music] man has long observed the movements of the Sun the moon and the planets [Music] he's measured angles and distances calculated gravitational forces the shapes of orbits only by technology [Music] the sharper tools of the 20th century have allowed him to measure the movements of the sun and the planets with reference to other stars in our galaxy and now he leaves Earth on Journeys into space foreign [Music] eventually man will set out toward another planet millions of miles distant [Music] modern science will guide his spacecraft with an accuracy and precision inconceivable to Earthbound Navigators spacecraft will be traveling at tens of thousands of miles per hour it will seem to the men on board to be hanging Motionless for them the Stars will be fixed in their positions there will be no day or night the receding Earth will not remain behind them but will be imperceptibly moving ahead where they left Earth there is now only a point in space if their objective is Mars for example they will not be moving directly toward it but along a curving path leading them to another point in space beyond the Sun they must arrive at that point at the same time as Mars neither they nor the planet can stop and wait on this trip an error in injection velocity at Earth of less than one tenth of one percent that's about 25 miles per hour well if it goes uncorrected cause the craft to miss Mars by over a third of a million miles the additional propellant and time required to correct so large an error near the end of the trip might be prohibitive the mission would likely fail but errors in space flight can be corrected during flight because the principles of space navigation are based on the knowledge that the forces involved are constant and predictable in our solar system each planet is locked into its orbit around the Sun by its particular velocity the planet's momentum being balanced by the sun's gravitational pull the inner planets where the pole is greatest travel at greater speeds than the outer planets where the pool is weaker if a spacecraft is to leave the Earth for another planet it must increase or decrease the speed imparted to it by the orbiting Earth yet either way this velocity changes a fraction of the orbital speed of the earth 66 000 miles an hour the velocity imparted by the Earth also puts the spacecraft into the ecliptic plane that's the plane of the Earth's orbit it would take the expenditure of considerable energy to get out of that plane fortunately all planets move in Planes very close to the ecliptic and they all orbit in the same direction unlike the planets a spacecraft can change its orbit and its direction because it can change its velocity when a spacecraft escapes the Earth's gravity in the same direction as the Earth's travel around the Sun its greater momentum around the sun over balances the sun's pull throwing the spacecraft outward but the sun's steady pull eventually slows the Kratz outward flight and here unless it can boost its speed it will start to fall inward on the other hand if the spacecraft leaves the Earth at the same speed as before but in a direction opposite to the Earth's travel it reduces its own velocity around the Sun permitting the sun to pull it gradually inward but as it falls it gains speed this increasing momentum will throw it outward again unless it can reduce its speed it is a controlled velocity change which Alters the course of an orbiting body in this Voyage to Mars The Path the spacecraft should follow has been computed but putting the craft on exactly the right path cannot be done even the most sophisticated launching rocket controls can't avoid small inaccuracies in launching or account for the uncertainties in the orbits of the earth and planets there will always be a small error to be corrected foreign the first correction will compensate for most of this error [Music] a small velocity change made early in the voyage will have a much greater effect than the same change made later Corrections will remove residual errors and refine the trajectory of The Craft to all navigation is the ability to measure angles for this man in space uses a Sextant a device he's been using for over 200 years [Music] with this instrument the astronaut measures precisely the angle between a planet and a known star this is recorded along with the exact time of the sighting this angle defines a cone of position because the angle between the planet and the star could have been cited from any point on the surface of that cone but one sighting will not tell him where the astronaut does know he is near his desired trajectory his approximate speed elapsed time and limits of possible error locate him within a football shaped volume which Navigators call the estimated ellipsoid of position the space where this ellipsoid intersects the cone establishes his position more closely in an area where the two coincide from this he knows about how far he is from his desired trajectory repeated sightings will be made to reduce the amount of uncertainty until the actual trajectory is determined within the allowable limits if it does not coincide with the desired one the astronaut must perform a mid-course correction to put his Craft on a corrected trajectory a more precise method for determining position uses three sightings from separate known bodies the three cone-shaped surfaces intersect and establish a point of position actually throughout the flight earth-based tracking information will be used to correct or supplement onboard navigation so long as it can supply sufficiently accurate data but as the spacecraft near the target position millions of miles from Earth's tracking stations the astronaut will have to rely to a much greater extent on his onboard navigational equipment any backup information from Earth would take 12 minutes to travel the 134 million miles and separate them [Music] he will determine the exact location of his craft with respect to the planet using Sexton sightings this time between the target planet and known stars now he can calculate the final velocity changes that will put him in a precise parking orbit around the planet once determined these velocity changes are applied and an orbit around the planet is attained foreign the astronaut will then use his Sexton to track landmarks this confirms his parking orbit and determines its characteristics permitting him to plan a descent trajectory [Music] in all space operations man's tools are of utmost importance they consist of information gathering devices both Optical and electronic time keeping devices and computers for manned space navigation the information gathering devices are the most varied they include sextants or other Optical instruments to measure angles between celestial bodies onboard radar and other electronic equipment for position determination and tracking earth-based radio and radar for precise distance and velocity measurements and inertial sensing and measuring equipment to provide a reference frame for positioning the vehicle during mid-course correction and to control the corrective maneuvers accurate time keeping and time recording are done electronically to an accuracy of 1 10 billionth of a second the computers on board and earth-based use both stored information and that furnish them by the measuring and sensing devices they process at a high speed the large number of involved calculations necessary during All Phases of a journey solve in seconds problems which would take an experienced Navigator an entire Voyage to calculate the National Aeronautics and Space Administration is engaged in the design and development of these devices and at the procedures and techniques for their use studies are underway to determine what navigation functions can best be performed by man in space and which function should be automatic or earth-based automatic onboard star tracking equipment developed for unmanned spacecraft will be available to supplement manned equipment deep space tracking equipment and methods are now so accurate that spacecraft can be guided to the moon and the near planets with remarkable accuracy for example Mariner 2 on its mission to Venus traversed 180 million miles of space and was placed within 12 000 miles of its Target Center this is like shooting at a moving Target from a platform that is moving and rotating at a range of one mile and hitting the target four and one quarter inches from dead center later Ranger 7 hit the moon within eight miles of its aiming point an inch and a half Miss at one mile Ranger 9 came closer impacting only two and three-quarter miles from its Target Center Mariner 4 came even closer traveling 325 million miles Mariner 4 swept past Mars within 2 000 miles of its aiming point and the very first surveyor surveyor won soft landed on the moon within nine miles of its Target Center a remarkable first attempt thank you these historic space flights are great technological achievements their skillful demonstrations of the reliability and accuracy of earth-based tracking techniques but we're still working on the considerable problems of landing on a planet within an accuracy of 10 miles at the same time even more effort is being directed towards simplification of both equipment and methods in manned flight studies are underway to determine how on board and earth-based systems can best work together with the aim of reducing on-board equipment as much as possible we're constantly improving our knowledge of the planet's masses their orbits distances from the Sun so the trajectories can be computed more accurately we are developing trajectory equations that can be solved by simplified computers which will still provide navigational data to the degree of reliability needed for manned flight to the planets development of new Optical techniques for angular measurements are being explored these may enable a navigator to get accurate information with handheld sextants [Music] our knowledge is constantly being increased by missions like Gemini [Music] angles distances and relative velocities and in determining the changes needed to attain specific trajectories actual experience we may be able to make improvements in future systems that we cannot now foresee or predict [Applause] systems development in our most ambitious project today the Apollo Moon flight is well underway guidance and navigation station aboard the Apollo is equipped with a scanning telescope a sextant a digital computer and an inertial measurement unit attitude and guidance controls can be operated directly by the Navigator or automatically by the computer at the direction of the Navigator this complete system permits all navigation for the lunar journey to be performed on board independent of earth-based tracking or Computing facilities if necessary the Navigator will make repeated sightings to confirm his position and trajectory however throughout the entire lunar trip he will have earth-based tracking information available for use in his own computer this is how the onboard Equipment Works the line of sight of the scanning telescope is fixed to the spacecraft looking through this scope the Navigator acquires the earth and the selected star until the Earth's Landmark is centered at zero rotation of the telescope reticle till it falls across the star also turns the sexton he notes the angle of the star and sets the Sextant at that angle now looking through the Sextant both images will appear enlarged and superimposed when they are lined up he pushes the mark button this feeds a precise time and angle information into the computer the computer also receives earth-based tracking data which when combined with the observed data keeps the Navigator informed of his current position and actual trajectory the Navigator instructs a computer to make the necessary trajectory correction it determines the exact amount and direction of thrust needed to accomplish this correction the inertial measurement unit furnishes a sense of direction to the computer enabling the spacecraft to be correctly oriented the rocket is fired the inertial measurement unit measures the acceleration beating this data to the computer [Music] when the desired speed change is accomplished the computer cuts off the engine [Music] more than one correction may be needed foreign Sextant readings will be made between known lunar landmarks and appropriate stars to determine the final course correction [Music] those onboard and earth-based computers determine independently what maneuver is required to place the Apollo craft into a lunar orbit [Music] the familiar Landmark tracking technique is then used to confirm the parking orbit putting man for the first time in a position to land on extraterrestrial ground [Music] the navigational experience gained in the Apollo program will contribute information needed for trips of Greater complexity [Music] for man is not content unless he's pressing himself to the limits of his knowledge or Beyond foreign [Music] 1967 um yeah so before we landed on the moon but there were definitely Saturn tests that were taking place at the worst footage from I I very much like these films that were made before we actually landed on the moon uh because it talks about all the considerations all the work um just the vast amount of information and back in the day when I was tentatively uh tapped to digitize a bunch of NASA material I really wanted to do as much as possible to show all that stuff to kind of show show their work uh that it wasn't just oh yeah they just launch a rocket and then they're on the moon because that what that happens is that people look at that and they're like oh well that's fake because they keep looking in the same footage they don't look at the vast amount of information that was gathered and created to get to the moon so that was my take on it but it was not a funded project so I didn't get to really do as much as I wanted this film I think was actually at NC State's library and I scanned it for them for free because I was just interested in that so thanks everybody for tuning in today uh if you liked what you saw hit the thumbs up the the like um you can also buy us coffee William bought us some coffee thank you for that you can go to KO Dash fi.com avgeeks to buy us coffee or go to patreon.com avgeeks to support us and um also there's a super thanks button if you're watching on YouTube but uh thanks for tuning in today we'll be back again tomorrow there's gonna be uh maybe a special guest and then a later an evening a special show of uh Dr Irwin Moon versus Irene Moon um our favorite uh sermons from Science Guy versus entomologist performance artist um so that'll be fun that's going to be at six o'clock tomorrow Friday um yeah thanks for tuning in and we will see you tomorrow take care