Optics B/C

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Re: Optics B/C

Post by Infinity Flat » May 23rd, 2011, 5:22 pm

Schrodingerscat wrote:I am curious, what was the position of the barrier for the division C laser shoot, and was there anything else that made it more difficult than usual?
It was about 40mm from the target, if I remember correctly. This was slightly closer than what I had prepared for, so I overcompensated a little bit and ended up hitting 20mm off, with a time score somewhere around 8 or 9.

The test wasn't unusually difficult. The questions were either "free points," calculations, or tested the thoroughness of your binder.
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Re: Optics B/C

Post by chalker » May 23rd, 2011, 9:06 pm

Schrodingerscat wrote:I am curious, what was the position of the barrier for the division C laser shoot, and was there anything else that made it more difficult than usual?

I think I placed the front (laser side) edge of the barrier at the 5 cm mark.

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Re: Optics B/C

Post by chalker » May 23rd, 2011, 9:07 pm

Infinity Flat wrote: The questions were either "free points," calculations, or tested the thoroughness of your binder.
That's a very astute and concise way of summarizing my approach to test making... I'm going to steal that for future reference;)

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Re: Optics B/C

Post by Infinity Flat » May 24th, 2011, 10:56 am

chalker wrote:
Infinity Flat wrote: The questions were either "free points," calculations, or tested the thoroughness of your binder.
That's a very astute and concise way of summarizing my approach to test making... I'm going to steal that for future reference;)
Thank you. :)

Are you going to upload the test to the wiki?
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Re: Optics B/C

Post by chalker » May 24th, 2011, 11:18 am

Infinity Flat wrote:
Are you going to upload the test to the wiki?
No, but I'll email you a copy if you send me your email address.

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Re: Optics B/C

Post by blue cobra » May 24th, 2011, 1:54 pm

The rules mention "energy and momentum of photons," if I remember correctly. This can be approached on many different levels, with varying degrees of funny math. For Division C, how is this typically covered?
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Re: Optics B/C

Post by quizbowl » May 24th, 2011, 2:37 pm

blue cobra wrote:The rules mention "energy and momentum of photons," if I remember correctly. This can be approached on many different levels, with varying degrees of funny math. For Division C, how is this typically covered?
E = hf (h = planck's constant, f = frequency)
There are other formulas, but you can usually derive them with this.
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Re: Optics B/C

Post by googlyfrog » May 24th, 2011, 4:27 pm

I'm pretty sure you need to know that for B div also, because I had to use that equation in a B Div test I took.

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Re: Optics B/C

Post by Tidus » May 25th, 2011, 8:35 am

Did anybody else hit the barrier in the Division C laser shoot? I was shocked when I saw that I hit the barrier... Right in the middle of it!!! :(

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Re: Optics B/C

Post by chalker » May 25th, 2011, 2:28 pm

Tidus wrote:Did anybody else hit the barrier in the Division C laser shoot? I was shocked when I saw that I hit the barrier... Right in the middle of it!!! :(

Lots of teams hit the barrier. 25 of the 60 teams recorded 'misses', which means they either hit the barrier or the side of a mirror or missed a mirror completely.

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