Questions tagged [optics]
Optics is the study of light, and its interaction with matter. It includes topics such as imaging systems, fiber optics, lasers, quantum optics, and more.
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The angle $\theta$ of the prism is [closed]
A parallel beam of light is incident from air at an angle $a$ on the side $PQ$ of a right angled triangular prism of refractive index $n = \sqrt{2}$.
Light undergoes total internal reflection in the ...
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Deriving Snell's Law from Fermat's Principle, why do we differentiate only with respect to $x$?
I'm confused about why we only differentiate with respect to the X when deriving Snell's law. Can someone explain why we do not also do a differentiation with respect to Y.
For more clarification ...
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Minimum deviation position in prism [duplicate]
Why does deviation become minimum at minimum deviation position? What is its importance in practical applications?
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Combination of mirror and lenses [closed]
I am a keen learner of physics, but I am unable to solve problems involving lenses and mirrors together. please can anybody tell me the method to solve these problems? for instance let us take a ...
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What causes a single photon to divert its trajectory?
If a single photon passes close enough to a star, the gravity will diverts its trajectory. What causes a photon to divert its trajectory as it passes a sharp edge or the boundary of two mediums?
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Can the wavelength of light change after it is emitted in a vacuum? [closed]
Can the wavelength of light change after it is emitted in a vacuum?
As the picture below describes, is it possible for light to change wavelengths after being emitted in a vacuum (no medium).
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Why does a ventilator appear to run leftwise and rightwise and back when spinning up?
My university professor, a friend of mine, asked me: "Do you know why, when a ventilator starts and during the process up to final speed, it runs clockwise and anticlockwise and back again to ...
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What's a safe, easily executable experiment to confirm that quantization of light occurs directly to the retina? [closed]
What's a safe, easily executable experiment to confirm that quantization of light occurs directly to the retina.
We know that light is quantized when projected on to a surface, or on to an inanimate ...
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Is there an IR-camera-detectible color that can be the coat for a material to transfer the material heat by emitting into the space? [closed]
If we see a material it is coloured in a color that our brain could easly recognize. But when we look at it by the help of an IR camera it could also be coloured and if two materials have same ...
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How to determine position of single slit minima?
Why does path difference between waves from two secondary sources equal half a wavelength?
And why is $\sin(\theta) = \frac\lambda b$?
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Why do we see an inverted image in a spoon on the concave side? [duplicate]
Actually I already read the answer given but that is not satisfactory. The real image is always inverted and virtual image is always erect. But we see a virtual inverted image. How is this possible? ...
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About my last question of the problem of young experiment [duplicate]
as you can see Ive conducted the young experiment with these tiny tiny holes you can see in the pics but get no result again. why ? I asked and your answer was about the size of slit but these slits ...
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How can we define length unambiguously when measurement of length is dependent on perspective?
Suppose I have two unmarked rulers, both of same length in one perspective. Let me keep them at some place in the room , and I view them from another. In the other point of viewing, the perceived ...
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Why school buses are not painted in red? [closed]
I came to know recently about why the road signals such as dead end signal or something like these have red paint because this colour's dispersion is very least among other rainbow colours.
But my ...
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