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April 26, 2024, 11:06:36 pm
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Author Topic: Questions - is this correct?  (Read 945 times)  Share 

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perfectscore

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Questions - is this correct?
« on: August 18, 2008, 10:05:07 pm »
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Out of laser, sodium vapour lamp, incandesccent light globe and blue led; A laser is the ONLY one that produces coherent light? Am I right?

Also,
out of those four; which one or more produce photons of discrete wavelength.
I think it is blue led, am I right? Or is there one or two more that do?
Thanks
« Last Edit: August 18, 2008, 10:08:16 pm by perfectscore »
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perfectscore

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Re: Questions - is this correct?
« Reply #1 on: August 18, 2008, 10:37:44 pm »
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Also, if you have a double slit set-up with lasers and you removed the slits, replacing the slits with 2 identical lasers, will the inference pattern change? WHY?
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mark_alec

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Re: Questions - is this correct?
« Reply #2 on: August 19, 2008, 07:06:13 pm »
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Quote from: perfectscore on August 18, 2008, 10:05:07 pm
Out of laser, sodium vapour lamp, incandesccent light globe and blue led; A laser is the ONLY one that produces coherent light? Am I right?
Yes
Quote
out of those four; which one or more produce photons of discrete wavelength.
The laser and sodium vapour lamp will both produce photons of discrete wavelengths, not sure about the LED.
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