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Laser mirror reflection
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by DT Moore · 1980 · Cited by 411 — However, only in the last 10 years has it been possible to design lenses, manufacture materials, measure the properties, and fabricate finished lens elements.
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Lasers and reflection in mirrorsIf you directed a laser light into a mirror that reflected that light back into an opposing mirror that reflected the light back into itself on the original mirror (and so on, to continue indefinitely), would that light continue to reflect even after you have switched off the laser. If not, why not.
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May 17, 2022 — The point where the lens turns from a convex shape to a concave shape is called its inflection point (Fig 6 shows inflection points in a ...
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Can a mirror reflect a high powered laser
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Please, someone who knows more about physics than me, will you help me with a few "dumb" questions? The reason I say they're dumb is because I should be able to grasp it, but can't. Here's the first one:Are inertial mass (as in p=mv where p is momentum) and "rest mass" the same...
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The timing is not exact, actually. There is a lag due to the chemical switching nature of neurons in the brain that are much slower than the speed of light. It just looks instantaneous to us because we cannot process such small units of time.
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Thanks for info. I am still confused as to why the loss of light or dissipation of light, coincides with the exact timing of the laser being switched off, if the mirrors were in perfect opposition and the light was in a state of constant reflection.
The short answer is no, it would not. The reasons why are multiple. I will keep the answers fairly non-technical - please forgive the loss of precision and technical accuracy in my answers as a result. I used to work in a research and development center where a large number of the scientists used lasers as part of their every day research, so I have gained a certain amount of familiarity with the physics involved. First off, most reflective surfaces are not 100% reflective. As a result there is a slight energy loss as some of the light will pass through the surface, or be absorbed by it. This is due to the fact that a laser beam transmits some of the beam's energy in the form of heat to the surfaces it strikes. This causes the laser beam to lose a little bit of energy each time it bounces. As a laser passes through an atmosphere, it excites the air particles it passes by and through, transferring energy from the laser to those particles in the form of additional heat loss. Finally, even though a laser beam is focused into a tight beam, it still radiates light - otherwise you would not be able to see it from the side. This represents another loss to the energy of the laser beam. Eventually, through these multiple methods of energy loss, the laser beam would lose cohesion and dissipate. Even if you had some theoretically perfect reflectors in perfect alignment, enclosed in a container which was holding a theoretically perfect vacuum, the radiant energy given off by the laser would be absorbed by the container and reflectors as heat and still eventually cause the laser beam to lose cohesion and dissipate.
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Parabolic mirrors (parabolic reflectors) are mirros where a cross section through the optical surface has the shape of a parabola. it was designed to focus or collimate broadband light. The focus of a centered parabolic mirror is located on the axis of the incoming beam, for many users this is not practical, Therefore an off-axis parabolic mirrors usually is the best choice because the focus point lies outside the incoming beam.
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