This is Not a Rainbow

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I felt smarter after watching this until I realized that I could never re-explain it to anyone with any shred of accuracy in my version.

๐Ÿ‘๏ธŽ︎ 29 ๐Ÿ‘ค๏ธŽ︎ u/TMCBarnes ๐Ÿ“…๏ธŽ︎ Mar 02 2018 ๐Ÿ—ซ︎ replies

It was to early for this much learning. My whole life was a lie.

๐Ÿ‘๏ธŽ︎ 9 ๐Ÿ‘ค๏ธŽ︎ u/Xenuear ๐Ÿ“…๏ธŽ︎ Mar 02 2018 ๐Ÿ—ซ︎ replies

I hate his voice.

๐Ÿ‘๏ธŽ︎ 19 ๐Ÿ‘ค๏ธŽ︎ u/MayoFetish ๐Ÿ“…๏ธŽ︎ Mar 02 2018 ๐Ÿ—ซ︎ replies

Awesome thank you for sharing!

๐Ÿ‘๏ธŽ︎ 2 ๐Ÿ‘ค๏ธŽ︎ u/[deleted] ๐Ÿ“…๏ธŽ︎ Mar 02 2018 ๐Ÿ—ซ︎ replies

Richard Of York Gave Battle In Vain

What other local, perhaps wrong given this video, sayings are there to remember the colours?

๐Ÿ‘๏ธŽ︎ 2 ๐Ÿ‘ค๏ธŽ︎ u/liketo ๐Ÿ“…๏ธŽ︎ Mar 02 2018 ๐Ÿ—ซ︎ replies

I wonder where in history we went from "violets are blue" to what violet means now.

๐Ÿ‘๏ธŽ︎ 1 ๐Ÿ‘ค๏ธŽ︎ u/L0rdenglish ๐Ÿ“…๏ธŽ︎ Mar 02 2018 ๐Ÿ—ซ︎ replies

I learned that Issac Newton included indigo because the church didn't want it to be 6 colors. Because 6 is not a number the church liked or whatever. So he when with indigo making it 7. I like the reason in the video better.

๐Ÿ‘๏ธŽ︎ 1 ๐Ÿ‘ค๏ธŽ︎ u/The_Spectator ๐Ÿ“…๏ธŽ︎ Mar 02 2018 ๐Ÿ—ซ︎ replies

Well, this explains the double and triple rainbow. All wonderment is gone from this world.

๐Ÿ‘๏ธŽ︎ 1 ๐Ÿ‘ค๏ธŽ︎ u/Yoggs ๐Ÿ“…๏ธŽ︎ Mar 02 2018 ๐Ÿ—ซ︎ replies

I cringed my way out of there

๐Ÿ‘๏ธŽ︎ 1 ๐Ÿ‘ค๏ธŽ︎ u/setthehook ๐Ÿ“…๏ธŽ︎ Mar 03 2018 ๐Ÿ—ซ︎ replies
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The rainbow, as we know it, is Red, Orange, Yellow, Green, Blue, Violet. ROYGBV. I'm ignoring Indigo because, let's be honest. Indigo? But where exactly is violet? Is it at the end here? This dark blue? And whatโ€™s this brighter light blue-green? Cyan, perhaps? Why don't we say the rainbow is Red Orange Yellow Green Cyan Blue? ROYGCB Well, we actually do, and weโ€™ve just forgotten. When Isaac Newton originally observed a rainbow of light split by a prism and made his labeling of the colors as RedOrangeYellowGreenBlueIndigoViolet, the thing he called โ€œblueโ€ was indeed what we would now call blue-green, teal or cyan โ€“ reminiscent of the color of the blue sky. And what we now tend to call blue, Newton called violet - as in, roses are red, violets are blue. Dark blue. He only included indigo in his fundamental "seven colors of the rainbowโ€ so that they would match the number of notes of the western musical scale: Do re mi fa so la tiโ€ฆ yeah. Purple and magenta, as we know, don't occur in the rainbow from a prism because they can only be made as a combination of red and blue light, and those are on opposite sides of the rainbow โ€“ nowhere near overlapping. So thereโ€™s no purple or hot pink in the rainbow from a prism. Violet is there in the โ€œroses are red, violets are BLUEโ€ sense, but purple is not. So then why do rainbows in the sky often look like they have purple in them? I suspect sometimes it's an optical illusion whereby nice deep blues in small amounts surrounded by a lighter color appear purplish to our eyes. HOWEVER, sometimes purple and pink really ARE there - because a rainbow is really a rain-disk: each color of sunlight reflects back in a bright-rimmed disc, all of different sizes, which together add up to make a white disk with a colorful rim. But because light is a wave, interference from the raindrops themselves actually gives each disk multiple rings - the familiar outer ring is just the brightest. The others are called "supernumerary rings" and are the source of supernumerary rainbows - the smaller the raindrops, the stronger the supernumerary bows. And if the drops are the right size, the first red supernumerary ring can overlap significantly with the main dark blue ring, and what do red and blue give? Purple! So as the saying goes, roses are red, violets are blue, and purple in a rainbow is a supernumerary hue.
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Channel: minutephysics
Views: 4,936,649
Rating: 4.9055581 out of 5
Keywords: Rainbow (Literature Subject), red, orange, yellow, green, blue, indigo, violet, purple, pink, cyan, minus green, supernumerary, double rainbow, interference, diffraction, optics, rain drop, ROYGBIV, roy g biv, MinutePhysics, physics, science
Id: 9udYi7exojk
Channel Id: undefined
Length: 2min 53sec (173 seconds)
Published: Tue Oct 28 2014
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