Your formula is right but for some reason I'm getting a different result than you did, check your calculation again I thinkAvogadro wrote:Well if that didn't work I'm not really sure how to do it... how did you do the calculation?kenniky wrote:that's not what I'm getting... check again?Avogadro wrote:From what I've managed to find on the subject, it looks like it should be wavelength squared over two times the length of the cavity, and we can probably safely ignore the slight difference between refractive index of air and vacuum. Using this, I got a result of 0.0039... nanometers, I think? Not really sure if I did this right.
Optics B/C
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kenniky
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Re: Optics B/C
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Re: Optics B/C
Got 0.00196 nm this time. Sounding better?kenniky wrote:Your formula is right but for some reason I'm getting a different result than you did, check your calculation again I thinkAvogadro wrote:Well if that didn't work I'm not really sure how to do it... how did you do the calculation?kenniky wrote: that's not what I'm getting... check again?
Lower Merion 2017
Subtitled: Revenge of the Non-Harriton
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Subtitled: Revenge of the Non-Harriton
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kenniky
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Re: Optics B/C
Yup, your turnAvogadro wrote:kenniky wrote:Your formula is right but for some reason I'm getting a different result than you did, check your calculation again I thinkAvogadro wrote: Well if that didn't work I'm not really sure how to do it... how did you do the calculation?Got 0.00196 nm this time. Sounding better?
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Avogadro
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Re: Optics B/C
Oh good, I was getting worried there.
White light is passed first through a filter absorbing wavelengths of light around 700 nm, and then through another filter absorbing wavelengths of light around 450 nm. It then hits a (yellow) lemon. Assuming no other light is present, what color does the lemon appear?
White light is passed first through a filter absorbing wavelengths of light around 700 nm, and then through another filter absorbing wavelengths of light around 450 nm. It then hits a (yellow) lemon. Assuming no other light is present, what color does the lemon appear?
Lower Merion 2017
Subtitled: Revenge of the Non-Harriton
Placement Record:
Code: Islip | Conestoga | Tiger | Regionals | States
Out of: 61 | 42 | 36 | 37 | 36
Chemistry Lab: 9 | - | - | 4 | 4
Astronomy: 14 | - | 5 | 10 | 3
Material Science: 12 | 19 | 9 | 5 | 9
Optics: 14 | 7 | 3 | 4 | 2
Subtitled: Revenge of the Non-Harriton
Placement Record:
Code: Islip | Conestoga | Tiger | Regionals | States
Out of: 61 | 42 | 36 | 37 | 36
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Material Science: 12 | 19 | 9 | 5 | 9
Optics: 14 | 7 | 3 | 4 | 2
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UTF-8 U+6211 U+662F
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Re: Optics B/C
Correct! Your turn/UTF-8 U+6211 U+662F wrote:If 700 nm is red and 450 nm is blue, then green?
Lower Merion 2017
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Out of: 61 | 42 | 36 | 37 | 36
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Material Science: 12 | 19 | 9 | 5 | 9
Optics: 14 | 7 | 3 | 4 | 2
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Out of: 61 | 42 | 36 | 37 | 36
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UTF-8 U+6211 U+662F
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Re: Optics B/C
A laser is pointed at mirror A with an angle of incidence of 50 degrees. Mirror A is connected to Mirror B at a 30 degree angle. What is the angle of reflection off of mirror B?
(The mirrors look something like this:
Mirror A
<
Mirror B
)
(The mirrors look something like this:
Mirror A
<
Mirror B
)
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Avogadro
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Re: Optics B/C
UTF-8 U+6211 U+662F wrote:A laser is pointed at mirror A with an angle of incidence of 50 degrees. Mirror A is connected to Mirror B at a 30 degree angle. What is the angle of reflection off of mirror B?
(The mirrors look something like this:
Mirror A
<
Mirror B
)
20°?
Lower Merion 2017
Subtitled: Revenge of the Non-Harriton
Placement Record:
Code: Islip | Conestoga | Tiger | Regionals | States
Out of: 61 | 42 | 36 | 37 | 36
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Astronomy: 14 | - | 5 | 10 | 3
Material Science: 12 | 19 | 9 | 5 | 9
Optics: 14 | 7 | 3 | 4 | 2
Subtitled: Revenge of the Non-Harriton
Placement Record:
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Out of: 61 | 42 | 36 | 37 | 36
Chemistry Lab: 9 | - | - | 4 | 4
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Material Science: 12 | 19 | 9 | 5 | 9
Optics: 14 | 7 | 3 | 4 | 2
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UTF-8 U+6211 U+662F
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Avogadro
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Re: Optics B/C
Cool.
A beam of light enters a prism with an index of refraction of 1.35. If each of the angles of the prism is 60°, what maximum angle must the angle of incidence be so that no light comes out the other side?
A beam of light enters a prism with an index of refraction of 1.35. If each of the angles of the prism is 60°, what maximum angle must the angle of incidence be so that no light comes out the other side?
Lower Merion 2017
Subtitled: Revenge of the Non-Harriton
Placement Record:
Code: Islip | Conestoga | Tiger | Regionals | States
Out of: 61 | 42 | 36 | 37 | 36
Chemistry Lab: 9 | - | - | 4 | 4
Astronomy: 14 | - | 5 | 10 | 3
Material Science: 12 | 19 | 9 | 5 | 9
Optics: 14 | 7 | 3 | 4 | 2
Subtitled: Revenge of the Non-Harriton
Placement Record:
Code: Islip | Conestoga | Tiger | Regionals | States
Out of: 61 | 42 | 36 | 37 | 36
Chemistry Lab: 9 | - | - | 4 | 4
Astronomy: 14 | - | 5 | 10 | 3
Material Science: 12 | 19 | 9 | 5 | 9
Optics: 14 | 7 | 3 | 4 | 2
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