Monday, July 28, 2008




How to Make A Rainbow



Make some light shine through some water, like in a glass. Or watch it going from the sun into rain.

The light has to be coming from behind you (so, it's light, then you, then water). I am not sure why yet.

I guess, Carlos, because water "breaks" light "down" into the "colors" it is "made up of"...this is how you make a rainbow.

(I don't really understand the parts in quotation marks.)





Posted by at

1 comment:

Anonymous said...

Redder colors of light bend more than bluer colors of light. White sun light is actually all the colors combined, so when you put it through a glass or water or something, the light bends different amounts making a spectrum line you see on the table or whatever.

In the air it's weirder. The round water droplets in the air scatter the light different amounts in a circle around the sun, which makes the rainbow in your eye. that's why sometimes you can see double or even triple rainbows. You can even see rainbows sometimes at night around the moon.

-nrrrdy guy

2:42 AM

Post a Comment

Subscribe to: Post Comments (Atom)

About Me

I came to Minneapolis from southern California this May to help my 88-year-old mother care for my 86-year-old father. He fell last November, and then declined cognitively for a month as his bones healed at a rehab facility under quarantine. He hasn't undeclined. Before retiring in the 1990s, he was a theater critic, & still seems to have some of his self-confidence and wit alongside vascular dementia, Parkinsonisms, incontinence and real trouble walking. Given his otherwise-ok health, he might still have some tolerable years ahead, though with new parameters. My mom's a novelist. She seems made of iron.