Variable physical laws

Physical quantities such as the speed of light, the gravitational constant and the electron mass are believed to be the same independent of where and when they appear in the universe. Therefore, they are known as constants of nature.

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<p><a href="http://www.physorg.com/news68967509.html">Variable physical laws</a></p> <p>Physical quantities such as the speed of light, the gravitational constant and the electron mass are believed to be the same independent of where and when they appear in the universe. Therefore, they are known as constants of nature.</p>