Optics B/C

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Re: Optics B/C

Post by foreverphysics »

Operating principles: exactly what it sounds like--the principles by which the piece of optical equipment operates.
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Re: Optics B/C

Post by Constellations »

Is there an equation to calculate the red/blue shift in frequency/wavelength of light? Would help with my notes...
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Re: Optics B/C

Post by foreverphysics »

Yes. It's called the relativistic Doppler Shift, and the equations are as follow (hopefully the equations are right, typing math into this thing is impossible):
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Re: Optics B/C

Post by himynameis »

Does anyone know a good site with a good list of the emission spectra of elements and information regarding that?
At region (DivC, Kentucky) there was a page on the test about this and no one knew how to do it. The same person is in charge of it at state and I would like to include some things in my binder
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Re: Optics B/C

Post by DivineBbbbbeast »

himynameis wrote:Does anyone know a good site with a good list of the emission spectra of elements and information regarding that?
At region (DivC, Kentucky) there was a page on the test about this and no one knew how to do it. The same person is in charge of it at state and I would like to include some things in my binder
I dont remember any particular sites, but most of them from google search were alright. But you'll definitely need a good color printer, and lots of ink.
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Re: Optics B/C

Post by SciBomb97 »

himynameis wrote:Does anyone know a good site with a good list of the emission spectra of elements and information regarding that?
At region (DivC, Kentucky) there was a page on the test about this and no one knew how to do it. The same person is in charge of it at state and I would like to include some things in my binder
Here's one for emission spectra: :geek: :geek:
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Re: Optics B/C

Post by foreverphysics »

EDIT: Disregard the post; my mistake. It's not done.
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Re: Optics B/C

Post by ncdmewaffleo »

Does anybody know if it is legal for the target in the laser shoot to be moved off of the center line? Because at New York State State competition, the target was moved about 3 centimeters from the center line which I did not know was legal?????
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Re: Optics B/C

Post by zyzzyva980 »

From the Division C rules (I think it's essentially the same for B):

Section 3.d.xi states:
A metric scale with a resolution of at least 1 mm must be attached horizontally to the far target wall at the level at which the laser strikes. One of the marks on the scale is the Target Point.
Section 3.d.ix states:
A line is drawn on the LSS from a point directly below the emitting tip of the laser to a point directly below the center of the laer beam where it strikes the opposite wall...
So, at least in C, while the line must be drawn to where the laser will hit on the wall, that is not necessarily where the target will be. A bit of an unorthodox move on the part of the state, but from what the rules say it sounds perfectly legal.

Does that make sense?
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Re: Optics B/C

Post by ncdmewaffleo »

zyzzyva98 wrote:From the Division C rules (I think it's essentially the same for B):

Section 3.d.xi states:
A metric scale with a resolution of at least 1 mm must be attached horizontally to the far target wall at the level at which the laser strikes. One of the marks on the scale is the Target Point.
Section 3.d.ix states:
A line is drawn on the LSS from a point directly below the emitting tip of the laser to a point directly below the center of the laer beam where it strikes the opposite wall...
So, at least in C, while the line must be drawn to where the laser will hit on the wall, that is not necessarily where the target will be. A bit of an unorthodox move on the part of the state, but from what the rules say it sounds perfectly legal.

Does that make sense?

Yes, thank you. I had not read this anywhere in the rules about how they could move the target and when we tried to adjust our setup in 4 minutes..... we were about 36 cm off due to the rush and ended up not doing so well. But this does help. Thanks again.
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