All Questions
Tagged with reflection visible-light
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Does a mirror have an albedo of 0?
According to the Wikipedia definition of albedo, it measures the fraction of light that is diffusely reflected by a body.
Let's consider the visible light wavelenghts; is a mirror an object with an ...
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How to determine if an observer can see an object with multiple mirrors?
How do I determine if an observer can see an object with multiple mirrors? I came across this image online and I am wondering if the observer (point O) see the object (point A)
My attempt:
I tried ...
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Pointing flash at LCD television creates a weird diffraction effect
I was looking around my room for something with my phone’s flash on, and noticed a very unique pattern reflecting off of the television.
FYI. The flash is white.
Any idea why it diffracts like that?
...
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Why does scanning a barcode off a mobile phone screen work?
I recently went to a store and showed the loyalty card on a picture taken on my phone. As the cashier moved to scan the barcode, I figured that this won't work.
Laser light is presumably coming out of ...
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What will be the color of red laser pointer spot on green surface?
I have read this discussion
enter link description here
, yet I want to make things more clear.
In ideal conditions is it true that red laser pointer spot will appear on white sutrface as red while on ...
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Property of total internal reflection question
If I create a medium with gradually decreasing refractive index from once face at index 2.0 and other at 1.01, and show a beam of light upon the optically denser side, will there be any losses upon ...
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Is there a way to calculate the angle between the refracted and reflected rays given the refractive index?
Is there a way to calculate the refracted and reflected rays? I know we use Snell's law to calculate the refracted rays, but is there a formula to calculate the angle of the reflected rays, or does it ...
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If a silver screen works for a movie projector then why not a mirror?
I have a projector and use a white sheet, thumb tacked, and stretched over a wall. It works fine. I went to the movie theater and looked at their screen closely. It was a fine silvery white glitter-...
user265090
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What is the speed of light during reflection? [duplicate]
What is the speed of light in a vacuum when the light reflects off of a mirror?
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Is reflected photon the same? [duplicate]
When a single photon is reflected is the same one, or is it a new photon (emitted) while the 'original' photon has been absorbed?
I'm not sure how to imagine a refleced photon - it's not a ball ...
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Why no image is formed when an incident and reflected ray intersect?
When two light rays intersect after reflecting from a concave mirror they form a real image.
but what happens if, say, a ray from the head of the object A collide with the reflected ray DA'? It might ...
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Isn't Reflection just absorption and emission? [duplicate]
How do mirrors work? How do the atoms in a mirror reflect photons. Does it absorb and reflect? As I understand it, after an atom absorbs a photon it is bound to release that same photon of the same ...
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Why does reflected light not cancel out depending on color?
I have been learning about light reflection and refraction and was thinking about objects reflecting only certain wave-lengths.
Why doesn't a red object with a green light shone on it appear black?
I ...
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Object and Image Distance from Image height, Object height, and focal length [closed]
Is there a way to find the object and image distances from the object height, image height, and focal length? I understand that the magnification is equal to $-\frac{d_i}{d_o}$ or $\frac{h_i}{h_o}$, ...
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Minimum Radius of Curvature an Optical Fiber can be bent
Using the thickness and refractive index of an optical fiber, is it possible to know the maximum radius of curvature it can be bent before there are losses due to refraction?
In my research, I came ...
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