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اینشتین در حال توضیح فرمول مشهور
E=mc2 - هم ارزی جرم و انرژی فایل با فرمت
Wav و حجم 1.2 مگابایت: اینجا فایل با فرمت
Mp3 و حجم 109 کیلوبایت: اینجا متن توضیحات: "It followed from
the special theory of relativity that mass and energy are both but different
manifestations of the same thing -- a somewhat unfamiliar conception for the
average mind. Furthermore, the equation E is equal to m c-squared, in which
energy is put equal to mass, multiplied by the square of the velocity of light,
showed that very small amounts of mass may be converted into a very large
amount of energy and vice versa. The mass and energy were in fact equivalent,
according to the formula mentioned above. This was demonstrated by Cockcroft
and Walton in 1932, experimentally." منبع: http://www.aip.org/history/einstein/voice1.htm
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