why is man there is magic in the way it is created in the way it travels the way it behaves and beyond the magic of life itself there is the magic of science finding as modern sun worshippers know sunshine contains an invisible form of light called ultraviolet ultraviolet light produces tanned skin and those healthy little things called vitamins science has learned how to produce this invisible form of light auto officially and now without leaving our homes we can turn winter in the summer the scientific ultraviolet light generator is a range to remove all of the visible light and project a strong beam of invisible black magic light one of the most amazing things about ultraviolet light is its ability to help us see things which by ordinary light out impossible to see radiation is of ultraviolet light different chemicals seem to respond with a different glow this fluorescent effect makes it possible to read many secret or hidden by the same principle on all their documents erasers and changes may be brought out so that the attempted alteration is clearly visible mixed in with the visible sunlight and the ultraviolet light is another magic light that our eyes cannot see but which we can feel as heat these invisible rays of heat which form so large a part of sunshine i've been given the name infrared light infrared light has no visual effect on our eyes so in order to see its results we must use a camera containing a special film which is sensitive only to enter a red light to furnish invisible light for the infrared camera we will use these big electric units which produce no visible light at all and now for the first time on the motion picture screen we are going to see a picture made entirely by infrared light in a dark room there goes the light and here is protector taken by the infrared camera and remember to the eye this girl is in total darkness infrared light is very penetrating in its effect with it for example we can even take the young lady's picture while she is hiding behind a screen coated with rubber the magic light shows that even a brand new shade isn't good enough when you're posing for the infrared camera it digs right down and finds the whiskers that haven't even sprouted yet previews a shave three days in advance visible light light has also been put under control by a science a remarkable new the it's splits light into a separate narrow raise so that the path of the beam can easily be followed noticed that the light spreads out from  source in all directions we can see how a mirror reflects light and how life can even be bent around corners in tubes and pipes now let's see the effect of a simple reflecting surface used to control light the rays leave their source strike a reflector and bounce back on themselves in the same path then if we place a lens like this in the path of the light the rays are bent inward  now let's try another type of lens similar to the lens used in automobile headlights instead of bringing the rays together at a point this lens bend them so they go out in parallel lines in the motorcar headlight the new system of light control makes use of the type of reflecting surface called a parabolic reflect the actual mechanics of this new headlamp are somewhat similar to previous to beam lamps when we are driving in the country light from the central filament if you missed an intense beam of light is reflected straight ahead then follow down the road when we switch to the passing beam another problem and only a few thousands of an inch away is lighted and the beam is now in down and to the right of the road a more accurate lens has been designed to direct light farther ahead in the driving b and more light on the right side of the road for passing me then the whole unit has been sealed air tight so that air and moisture tarnation rust cannot cut down its efficien and so today we drive with headlights that apply the latest principle of scientific light controlled headlights student to the speed with which we travel on the high road controlled light makes possible safe speed because we can always stop within the range of our own headlights in city driving and then passing other cars on the highway our control passing game continues to light the right side of the road without shining in the other fellow's eyes if we drive safely and always been our lights when passing we can take full advantage of the new control science has given us