Rainbows (Physics Problem)

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Assuming that the index of refraction of water is 4/3 and that raindrops are spherical, show that the location of a rainbow is approximately 42◦ above the line from the sun to you. If you see a double rainbow, what is the angle of the second one? Even triple rainbows are possible, although they are difficult to see; where is the third one?

If memory serves...   light refracts 5 times within a rain droplet for the primary rainbow, 7 times for the 2nd rainbow, and 11 times for the 3rd rainbow at approximately 105º  (similar to a sun dog)

 

Trump administration to cut all funding on "Double and Triple Rainbows"

They've decided that their filthy rich friends need the money more.

Each specific color of the second & third rainbows will have different angle percentage variance from the first spectrum (jn reverse).

I would keep on walking, looking for the next one.

I'm not a physicist, but it's my understanding that one trip through the drop (two refractions and one reflection) creates a rainbow. A second reflection and third refraction causes the second bow.

Not correct?

Depends, was the bread cut "diagonally".

Plagiarizing Homework Help now?

Have you no shame? 

Plagiarizing Homework Help now?<<<

You've got nothing on him.

Especially considering I don't plagiarize. 

F u floops. 

Nothing u do here is original 

All I remember from college on this is Snell's law. I  found this thread interesting and want to figure out the answer when I have time tonight.

All I remember from college on this is Snell's law. I  found this thread interesting and want to figure out the answer when I have time tonight.

Hey, Chachi. Who are you? Wanna tell us who you were on the Zone? 

 

I've got a BS in Atmospheric Sciences (BS = beyond stupidity).  Worked in wind energy in the early 80's.  Republicans were always trying to eliminate our funding, and eventually they got their way.  My first official job after graduating was closing down the program, closing down the state climatological center, closing all the research labs (including the largest / most comprehensive / and one of the longest running solar field labs in the nation), and auctioning off everything (mostly bought up by engineering programs).  

So there is no light at the end of the rainbow, the anti reality crowd made sure of that!

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>Hey, Chachi. Who are you? Wanna tell us who you were on the Zone? 

listen for the one millionth time i was never anyone else here or there but me

i swear to fucking GOD 

man 

> I  found this thread interesting and want to figure out the answer when I have time tonight.

thanks ender i knew you would 

reflection-refraction-and-dispersion-in-rainbow-3-600x450.jpg

 

I'm a little sad that someone managed to make this thread political.

>I'm a little sad that someone managed to make this thread political.

yeah that sucks 

and it also turns into the "who are you" thread

as if some new person can't come here and interact with everyone

i get it really 

who would want to interact with floops or FOM those two have some major problems 

also pretty funny how i get slack for something interesting

yeah i found it online, no shit

90 percent of all content here is cut and past  

One could presume the Pot o' gold is smallest on the rare third one.

Physics and back to science.

edit

>>>listen for the one millionth time i was never anyone else here or there but me

i swear to fucking GOD 

man 

 

*snicker*

get bent floops 

you look so stupid thinking i'm someone else 

everyone here that matters knows better 

here's another one just for you ender

Cereal box prizes

In each box of a certain cereal there is a prize, which is one of N colors. Assuming that the prize in each box has equal odds of being any color (even after you’ve bought many boxes), how many boxes do you need to buy, on average, before you collect all the different colors? Let P(n) be the probability that you collect the final color in the nth box. For what value of n, in terms of N, is P(n) maximum? Assume that N is large, and ignore terms in your answer that are of subleading order in N.

Okay, I'll stop now, Chach. Just don't cry. 

A video of big waves crashing against the rocks on the Oregon Coast I made a month or so ago, complete with double rainbow  (can barely see the secondary rainbow in the picture, and that's another guy screaming on the big wave in the video, as he caught the perfect pic of it (here's his pic)!

https://www.youtube.com/watch?v=DVzDV-nKvuI

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> Just don't cry.

crying is like 90 percent of your content

 

Brocha hates rainbows :(

You are wimpering like an emo in pink. I hurl my anguish. There's a clear difference.

And you say it's 90%; it's only actually 30% wink

i've seen a triple rainbow brah.

everyone here that matters<<<

You know bro, you really do matter ... whether or not your mind gets in your way sometimes is irrelevant to this basic fact.

face, what's your next thread topic going to be?

what kind of first world problems are going on in your head today?

>> how many boxes do you need to buy, on average, before you collect all the different colors?

sum.png

>> Let P(n) be the probability that you collect the final color in the nth box. For what value of n, in terms of N, is P(n) maximum? Assume that N is large, and ignore terms in your answer that are of subleading order in N.

I simulated it and charted histograms and it's very close to, but not exactly what I expected. I'm not even sure the distribution is normal. I'll have to play with it as I have to go back to work now. Not quick/smart enough to do the math on my lunch break.

Lord almight, I feel my temperature risin'

Nvm just another heart attack, new year and I'm still living in a rented hovel outside of Amsterdam

Oh wait that's not ateix that's flo...

ateix has fat fingers.

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Rainbow on Upper Yosemite Falls 12/26/17

 >>>I'm a little sad that someone managed to make this thread political.

surely you can't be referring to this:

>>>Trump administration to cut all funding on "Double and Triple Rainbows"

They've decided that their filthy rich friends need the money more.

If so I consider it sad that a harmless unfunny joke is considered political to you, dude. 

On a lighter non political note that will also probably sadden you, I can't wait to see the Falcons get crushed by whoever they are playing this weekend.

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>I simulated it and charted histograms and it's very close to, but not exactly what I expected. I'm not even sure the distribution is normal. I'll have to play with it as I have to go back to work now. Not quick/smart enough to do the math on my lunch break<

 

great post ender!

>Lord almight, I feel my temperature risin'

Nvm just another heart attack, new year and I'm still living in a rented hovel outside of Amsterdam

Oh wait that's not ateix that's flo...

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I don't mind you picking on my situation, Atax, except, it's disappointing that you can't be more imaginative than that. You seem to have the brains for more than low-hanging fruit. 

And FYI, I am living with my girlfriend while I recover. She's taking great care of me and I'm warm and comfy. Thanks for the thought. 

I also took my kids to see Star Wars recently, and we had a great time. You see, I work, and I always have. I have had houses, just not right now. 

So it turns out I have congenital heart disease. So I got divorced in the Netherlands during a major economic crisis. So I still have kids to take care of. 

I hope you never find yourself in such a situation. It sucks. 

 

The reason I have trouble with and raz you and chacho is because you're plain mean, and it's usually not even funny. Pranksters can prank and troll and antagonize, but just being mean is super lame. I poke to see how you poke back. I see. 

>> On a lighter non political note that will also probably sadden you, I can't wait to see the Falcons get crushed by whoever they are playing this weekend.

Eat a dick! We're favorites on the road against the Eagles too!

Is anyone factoring in the diameter of the unicorn's sphincter?

Shit.  Maybe I mean "radius."

 

Never mind.

lol, no thanks dogman. kudos to the Falcons, can't say much was memorable about that game though. 

the earth cried (twice) and left a (d)raindow named floops

hopefully there is a sob story for a follow-up

grow up floopie....everyone has problems

>>>>> no thanks dogman

 

Dogman?

Yes, Frank, everyone has problems, and this is, or at least it was, a place to reach out and connect with others. So I did that and found a lot of comfort in my time of need. Many people come here for vibes. Are you so cool that you never need vibes? Then cool. Good for you. And of course, the trolls brought up my shit, not me. 

>>>grow up floopie....everyone has problems

The contradiction in that statement is stunning. Do you want to discuss your sitch, Frank? It sounds like you'd like some attention.  

Eye Used-ta Do Da Matdz, Den I Dun Diddly Did A Buncha Rugs . . .