What will happen to rotating laser pointer?
If you spin a high powered laser pointer, can light arcs over great distances faster than the speed of light? If so, what are the practical implications of such an effect? Laser pointer light will also appear similar deformation, my opinion is similar to the one who gave the picture, the red line on the picture is very intuitive. The light may appear straight to your eye as it rotates, but the next second after it rotates, the light source is emitting another wave of light, or photon, at a different Angle, but this ray is already 300,000 kilometers away. Where does the human eye look? So you still feel like the light is rigid. Not ah. If you want to say that constant angular velocity increases linear velocity by increasing the radius, then when the radius is very large, the propagation time cannot be ignored. If the propagation time exists, then the speed of the laser pointer can not exceed the speed of light when observing the position of the online velocity, because the luminous point and the receiving point are no longer synchronized.
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A wider span can be obtained using conventional lasers. The team is now trying to create a version of the device small enough to fit in your hand. The modified device's more flexible design makes it easier to miniaturize chips and will open up new uses for the device. Laser range size is not without its negative effects. The laser beam is interfered by laser noise, stray light and speckle results. Many ambitions may also have different reflective or scattering characteristics, which can lead to inaccurate measurements. Instruments designed to measure objects at great distances can be annoying to people without proper goggles. Measuring long distances with lasers in extremely hot or smoky areas is tricky because those conditions diffuse the beam.
2021-12-02 12:24:44
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