Using a variety of colored light sources can be a great way introduce or investigate the behavior of light rays. This is an updated version of my original color shadow video, offering additional suggestion for light sources.
Note, the products used in the video were purchased a few years ago, I no longer know the exact manufacturers or suppliers but several alternative sources are available.
additional information for color light sources and glasses online
1.The are several choices and suppliers of color flashlights that can be found online by doing a product search for color flashlights, sizes may vary. Some flashlights are even able to produce more than one color, I have not tried these. Several sources may offer an additional 4th light color such as yellow or UV light.
2. plain flashlights are also able to be used by covering the lens with colored filters or colored cellophane.
3. screw in bulbs: once again light sources can be found doing a search for color LED spotlights, or LED backdrop lights
4. small LED lights: these are often called finger lights, once again found online and can be sold in bulk, in several available colors, these are cheap but the quality of the are usually not the best, some will stop working very quickly. The intensity of light or brightness in not consistent from one piece to the next.
5. The prism glasses can be purchased in bulk or individually, paper glass frames with plastic lenses. found online under various names, such as prism glasses or rainbow glasses.
SOLO ACOUSTIC GUITAR by Jason Shaw http://freemusicarchive.org/music/Jas…
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That’s cool we’re learning about that in your old classroom
I wish my teachers were as interesting and engaging as you. You have passion for the subject, as well as passion for teaching, and it definitely shows. You're doing the Lord's work, Mr. Yeany! I hope that my son gets to have even just one teacher like you, someday.
May the force be ever with you!
This is a lovely video. I especially enjoyed seeing the sources through the glasses with the soft music.
🌷🌟🌷🌟🌷🌟🌷🌟🌷🌟
Two channels today delved into saddle shaped mirrors, will you add to that topic?
The Earth is flat with Firmament.
LEDs have certainly made this demo cheaper and easier. I used to do colored shadows using 3 dichroic (aka interference filtered) PAR-38 floodlamps. They work great but are much more expensive than LEDs and also a bit unwieldy.
Nice!
"Seven" colours is a rather arbitrary categorization. There can be a hundred, or just two, depending on your individual colour-discerning ability.
Seperating a photo into Red, Green and Blue color channels and printing each channel on a transparency can make for a very cool demo when you stack them they suddenly come to life in full color.
Such an enjoyable video! My favourite part was with the glass of yellow water at 6:55, where a specific part of the spectrum stays and not just a single color. I was wondering, did you make the prism glasses by yourself or did you buy them?
It's interesting about Herschel who put a thermometer in a spectrum from a prism to test the colors and discovered the greatest heat/infrared when he had a thermometer past the red where there wasn't any visible light, to his surprise.
Never stop learning stuff
Я 10 лет работаю со светом в театре, и многое знаю про смещение цветов. В теории.
Но наконец-то кто-то показал мне "на пальцах" какие происходит процессы.
Спасибо!!!