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Category Archives: speed of light
Before discussion the Special Theory of Relativity. Two observations must be understood; one that the speed of light is constant and two one cannot distinguish a state of rest from a state of constant velocity. The idea that the speed of light is constant has never been truly proven, but can be verified with experimentation. […]Continue reading → Continue reading
The speed of light is very, very fast, almost incomprehensibly fast. It is unusual to think that whenever we see an object, light is bouncing off that object and hitting our eye. We perceive this to be instantaneous, but it actually takes some infinitesimal amount of time for light to travel from nearby objects to […] Continue reading → Continue reading
The effects of aberration and the Doppler Effect. Source: Comic Vine During one of the first class sessions, we were given a minute or so to write down what would happen if the speed of light was only 100 mph. I’d never really thought about this before, so I struggled to get anything more than “The… More Consequences of breaking the speed limit Continue reading → Continue reading
To answer the titular question in a word: no. So then, what exactly is a light-year and what does it have to do with the speed of light? A light-year is the amount of distance that a given light wave (light, radio waves, X-rays) travels in a year. Because the speed of light is approximately 300,000 meters per second, […] Continue reading → Continue reading
After 6 months, astronauts in the International Space Station would have aged about 0.007 seconds less that people on Earth. This is due to the International Space Station moving much faster than the Earth. Time itself will bend due to differences in gravity or velocity. Now what if an object starts to move close to […] Continue reading → Continue reading
Have you ever felt that understanding the truly staggering size of the universe is unfathomable? With the help of this interactive website you can see first-hand the tremendous distances in just our own solar system! Starting from the center of our solar … Continue reading → Continue reading → Continue reading
This web page gives us the answer. Basically, if any object with mass were moving at that speed, especially within our …
Despite common misperceptions, a light year is a measure of distance, not time. It is the only feasible way to measure distances in the universe because the universe is so vast that measurements of distance used on earth would quickly … Continue reading → Continue reading → Continue reading
The speed of light is 299,792,458 meters per second. Nothing that we know of travels faster than light, and that’s a good thing because everything we see depends on light traveling from the object to our eyes. Because light has to travel to our eyes, we always see things as they appeared in the past. […] Continue reading → Continue reading
Although we often refer to “the speed of light” as a singular value (c = 299,792,458 m/s), the truth is that when we see light, it is actually moving slower than this speed. This is because the light we see is not moving in a vacuum, but through our atmosphere instead. Light moves at different speeds […] Continue reading → Continue reading