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Dipra Irham
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a prism is supposed to scatter light rays and separate it into rainbow,then why in a prism periscope the prism send light rays to a particular direction instead of scattering?
Welcome to the PF.Dipra Irham said:a prism is supposed to scatter light rays and separate it into rainbow,then why in a prism periscope the prism send light rays to a particular direction instead of scattering?
Dipra Irham said:a prism is supposed to scatter light rays and separate it into rainbow,then why in a prism periscope the prism send light rays to a particular direction instead of scattering?
Prisms can be used in more than one way and their angles can be accordingly different.Dipra Irham said:a prism is supposed to scatter light rays and separate it into rainbow,then why in a prism periscope the prism send light rays to a particular direction instead of scattering?
cool, just learned something as wellAndy Resnick said:When used in imaging applications, prisms are generally oriented so that total internal reflection occurs- see, for example:
https://www.edmundoptics.com/resources/application-notes/optics/optical-prism-application-examples/
sophiecentaur said:Prisms can be used in more than one way and their angles can be accordingly different.
You will have seen a diagram of this use of a prism. You will notice that light enters and leaves the prism along a Normal. So there is no dispersion there.
I agree with that 'second level' of prism knowledge. CA is always a problem in optics but the symmetry of the way prisms tend to be used must help a lot.Drakkith said:For most prisms in optical systems, the majority of the light doesn't enter at the normal angle. However, the fact that the angle to the normal is generally small and that you're not trying to focus the light with the prism keeps the chromatic aberration low. I believe the dispersion generated by the first surface is counteracted by the exiting surface, perhaps with a small lateral (side-to-side/up-and-down) offset of the image in the different colors. But I admit I haven't worked with prisms in well over a year, and even then I don't think we investigated the chromatic aberration of a prism, so don't take my word as the law on this.
A prism periscope focuses light by using the principle of refraction. When light passes through the angled surfaces of the prism, it bends or refracts, causing the light rays to converge at a single point, creating a focused image.
A prism periscope uses a prism to bend and focus light, while a regular periscope uses a series of mirrors to reflect light. This difference allows a prism periscope to produce a clearer and more focused image compared to a regular periscope.
No, a prism periscope does not magnify objects or make them appear closer. It simply bends and focuses the light that is already present, so the distance of the object being viewed remains the same.
Yes, there are different types of prisms that can be used in prism periscopes, such as equilateral prisms, right-angle prisms, and dove prisms. Each type of prism has a specific shape and angle that affects the way light is refracted and focused.
Yes, a prism periscope can be used in low light conditions, but the image produced may not be as clear or bright compared to using it in well-lit environments. This is because the amount of light that enters the periscope affects the quality of the focused image.