Then along came Albert Einstein, who had a different approach to the problem. First he assumed that Newton's relativity was correct (that an object cannot determine its speed by observing things in its own reference frame). Second, he postulated that the speed of light in a vacuum did not change, but is a constant! He then asserted that it was not the Maxwell's equations that needed a correction, but it was the laws of mechanics that were incorrect!
Let's figure out what this correction is, click Next.
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