Proper length is the length of an object in its rest frame. Light doesn't HAVE a rest frame so doesn't have a proper length, unless you're using some different definition.DrHAO said:... how to certify the proper length of light is zero
phinds said:Light doesn't HAVE a rest frame
The proper length of light is the distance that light travels in a vacuum in a given amount of time. This is typically measured in meters or kilometers, depending on the scale of the distance being measured.
The proper length of light is determined through various experiments and calculations, using principles from the theory of relativity. One common method is to measure the time it takes for a light pulse to travel from one point to another, and then using the speed of light to calculate the distance.
In theory, the proper length of light can be zero in certain situations where light is traveling at the speed of light in a vacuum. This is known as "null length" and is a concept in Einstein's theory of relativity. However, in practical experiments, the proper length of light is never exactly zero.
Certifying that the proper length of light is zero would require precise and accurate measurements of the speed of light and the distance traveled. This can be done through advanced equipment and techniques, but it is difficult to achieve absolute certainty due to the limitations of our current technology.
Certifying the proper length of light is important for understanding the behavior of light and its effects on the universe. It also plays a crucial role in various scientific fields, such as astronomy and physics, where precise measurements of distance and time are necessary for accurate calculations and predictions.