Film Cameras + More Remember film? We do, and we miss it!

Flash Light

Flash Light

 

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You pointed to the two mirrors the light will flash the lights out?

So if you point the flash of light flash in the light Mirror, mirror, another is not aimed at the light just Back and forth would continue to bounce between the 2 mirrors?

Mirrors 100% is reflected. Because of extensive involvement of photons of light speed, almost Will be stopped immediately. This method has been used centuries ago However, Foucault and Fizeau to measure the speed of light to save the Galileo and the. Compensation is to be thought with lanterns Two other people away. After one of his lantern, the other one Right to know, to know that you can see the light of his from the beginning. This routine practice is to have two close together, so They used the reaction time will get to participate, then They are 2-3 km apart, or even using a telescope Do it, if the time interval is perceptibly lengthened. Galileo He's actually more than one mile distance from the experiment, but, claims Delay could not be detected. It's definitely the light Deduce the number of trips at least 10 times faster than sound. We If you can get the second 10, although the 2 km away from the lights if the Delay time from 1 to 10,000 are second command, and it is ready to Its hard to see how. The technical problems in France About 1850 the two rivals, Fizeau and Foucault, using slightly different techniques Were resolved. 9 Fizeau instrument used in the full grid of light between the teeth Because the wheels rotate faster teeth glow "Lanterns" continues Is applied and identify. Instead, Fizeau simply meonui second lantern again, Mirrors where light passes between the teeth of the wheels on the second. This idea, with the gap between teeth of a tooth of time Only if you had not had anything going to be back with the same gap Blip of light was out away from the mirror to return to While a lot of time to go. It is difficult to 100 teeth To create a wheel, and was in for a second, So, it rotates hundreds of times more than the second of teeth 10, 1000 minutes as part of a move can be sorted. This method Worked. Foucault's approach to the same general idea, but instead Was based on the rotation of the wheel teeth in the mirror and light were shining. At one point in the rotation of the mirror, rotating mirror, reflecting light as soon One the other hand, far away from reflecting in a mirror set with a small angle Was. After the second reflection in the mirror rotation, the position of the beam Was carefully measured. How far can this possibly mirrors Had turned, trying to figure out the rotational speed of the mirror made known It's a long trip to make in the mirror when he took the light, During and since the speed of light can be figured out. Such 2 miles per scheme given the light of the accuracy and speed for 1000. Below Reference sources

Parliament - Flash light


 

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Hubble telescope sheds light on mystery Jupiter flash
The orbiting Hubble telescope may have explained a mystery streak of light that occurred on the face of Jupiter on June 3, the European Space Agency (ESA) said on Wednesday.