All Questions
Tagged with optics visible-light
1,366
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Can the physics behind AR glasses be entirely modeled by geometric optics?
If I wanted to get the image of a small LED screen to be reflected onto the lens of a pair of glasses, would an understanding of geometric optics be sufficient to model this scenario?
I ask this ...
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General questions on the "big picture" of scalar diffraction theory
When studying diffraction, my courses at university stopped with frauenhofer diffraction, which - as far as I understand it - describes the diffracted far field for diffraction of a more or less ...
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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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Absorption spectra in films chemicals & dyes
For a science competition, we have to understand absorption spectra in films chemicals & dyes. But what is that? I've found resources on the absorption spectra of chlorophyll, but I'm unclear as ...
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Does quantum tunnelling have anything to with perception of light?
There have been studies suggesting that the sense of smell has something to do with quantum tunnelling but I'm afraid I don't know the exact details.
Do we possess internal mechanisms that simply &...
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Absorption and emission spectrum
I was wondering how do you see a spectrum when light is passed through a substance. Like most of the substances we use are opaque, so how does light pass through them without being reflected? Also ...
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Why does the energy (and thus frequency) of a photon entering glass stay constant if some is used up to accelerate electrons and slow down the light?
I'm learning optics and have been told that when light enters a medium (e.g. glass) and slows down the frequency of the light stays constant while it is the wavelength which is reduced. The ...
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Why is a bigger camera sensor better at low light than a smaller one?
People say a bigger camera sensor is better for light performance as the photo sensors are bigger and hence let in more light. But couldn't you just let the same light in and focus it down onto the ...
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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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Can the velocity of an image produced by a plane mirror be greater than that of light?
We are currently studying ray optics in school and it made me wonder if the velocity of an image produced by a plane mirror can theoretically be greater than that of light.
Using the relation $v_i = 2 ...
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Why in the experiment of double slits, in case of radiation of wavelength of red light, we can observe an envelop of the minimum?
I have made an experiment in which i have to measure the intensity of the light generated by an $\text{He-Ne}$ laser, in the case of two slits, I pretend to observe an interference lattice.
I have to ...
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Is there a way to determine whether what I see is a source of light, a real image, or a virtual image?
Let's suppose you are in a dark room and see something resembling a firefly. The light it emits is so dim that nothing else is visible. You're told that it's either a real source of light or an image ...
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2
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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 ...
- 187
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Apparent position of object in bowl of water
Say you have a bowl of water and you keep an object in it. What would the apparent position of an object inside the bowl from the position of an outside observer? Will the curvature of the spherical ...
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Any research or study that monitored the spectrum of the natural light during the entire day?
I am interested in understanding the light spectrum during sunrise, morning, midday, afternoon, golden hour, and blue hour.
Is there anyplace I can look at those?
