Optics B/C

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Optics B/C

Postby Froggie » September 10th, 2017, 7:22 am

I just realized this wasn't a thing..
So here goes.
Start simple (kind of):
The first medium is air and the second is water. The angle of incidence is 45 degrees. What is the angle of refraction?

(I hope I worded this correctly enough.)
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Re: Optics B/C

Postby Ten086 » September 23rd, 2017, 1:10 pm

Uh oh, I haven't done anything optics-related since my school's tryouts last year...
32.1 degrees?
Just trying my best...

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Re: Optics B/C

Postby Froggie » September 23rd, 2017, 1:52 pm

Correct! Your turn. :)
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Re: Optics B/C

Postby WhatScience? » September 26th, 2017, 6:04 pm

Uh oh, I haven't done anything optics-related since my school's tryouts last year...
32.1 degrees?
Just quoting you to give you a notification and remind you that this thread does indeed exist.
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Events 2018

Thermodynamics, Potions and Poisons, Disease Detectives, Optics, and Towers

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Re: Optics B/C

Postby Froggie » October 1st, 2017, 11:32 am

Someone else can post a question if Ten086 doesn't post in the next 24 hours...
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raxu
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Re: Optics B/C

Postby raxu » October 8th, 2017, 9:10 am

I'll post one.

A photon has wavelength 500 nm when traveling in crown glass (n=1.52). What is its color?
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Re: Optics B/C

Postby Adi1008 » October 8th, 2017, 2:31 pm

I'll post one.

A photon has wavelength 500 nm when traveling in crown glass (n=1.52). What is its color?
[math]f \times 5 \times 10^{-7} = \frac{3 \times 10^{8}}{1.52} \rightarrow \lambda_{real} = 760 \mathrm{nm}[/math]
Red or near infrared, depending on which boundaries are used
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Re: Optics B/C

Postby Ten086 » October 16th, 2017, 6:39 pm

Oh jeez sorry, completely forgot that I replied in here :( Sorry, first time doing anything in a question marathon. This forum sure is dead though, is it just early in the year or are question marathons not very active?
Just trying my best...

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Re: Optics B/C

Postby Froggie » October 17th, 2017, 12:57 pm

I'll post one.

A photon has wavelength 500 nm when traveling in crown glass (n=1.52). What is its color?
Doing what WhatScience? did.
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Re: Optics B/C

Postby Unome » October 17th, 2017, 2:13 pm

Oh jeez sorry, completely forgot that I replied in here :( Sorry, first time doing anything in a question marathon. This forum sure is dead though, is it just early in the year or are question marathons not very active?
In general, the physics events have not historically had very active question marathons. The main exceptions are Simple Machines 2015 and Optics last year, though neither were particularly long. Typically, all it takes is a few active people to keep a question marathon active - which is what happened in Simple Machines, a lot of it was mjcox2000 and I going back and forth with higher-level problems (well, higher-level for Div B).
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