Unraveling the Mysteries of Rainbows - How to See, Understand, and Appreciate Nature's Colorful Wonder
Discover the secrets behind rainbows - exploring their colors, sizes, locations, and the science of light refraction. Learn how to observe rainbows, identify the red color placement, understand the phenomenon of the 2nd bow, and more. Delve into the intriguing world of rainbows and enhance your appreciation of the natural beauty that surrounds us.
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Presentation Transcript
How to See Rainbows
Questions 1. Red Color : Outside or Inside? 2. Radius (in degrees) 3. Width? (in degrees) 4. Length? 5. Where? When? 6. Brighter : Outside or Inside? 7. 2ndbow?
Raindrop Sun A i r B 180 -(4r-i) r i r 4r 4r-i r C i i Snell s Law sin? sin?= ? (water : ? = 1.336) 180 -(4r-i)+i=180 -4r+2i 180 - 4r-2i
m ? ? 0 0 180 170 160.8 152.0 145.2 140.0 138.4 141.2 150.4 166.4 10 20 30 40 50 60 70 80 90 7.5 14.8 22.0 28.7 35.0 40.4 44.7 47.4 48.4
???? 42 ???? 138 No light 42 42
???? 42.4 ????= ?.??? ???? 40.6 ???????= ?.??? No light White
No light 42 White 42 Raindrop
40.6 42.4 Raindrop
Raindrop Sun A i r B r r r C i
???? 50.4 Raindrop C ???? 53.5 Sun D B A
50.4 53.5 Raindrop
Q.1 Red Color : Outside or Inside? Q.2 Radius Q.3 Width Q.6 Brighter : Outside or Inside? No light Red : Outside Radius : 42.4 Width : 1.8 42.4 40.6 White
Q4. Length of the Bow Longer Shorter
Q.5 Where? and When? Late morning Early afternoon West West East East Morning Afternoon
Q.7 Secondary Rainbows Red : Inside Radius : 53.5 Width : 3.1 Primary Rainbows Red : Outside Radius : 42.4 Width : 1.8 42.4 53.5
