Matter is radioactive and decays over time
Henri Becquerel discovered that <span>uranium salts spontaneously emit a penetrating radiation that can be registered on a photographic plate.
hope this helps</span>
On September 2, 2013, the temperature record at El Azizia, Libya (58° C) was disqualified. Therefore, the highest temperature recorded on the surface of the earth was recorded in 1913 at Death Valley, California. The mercury climbed to 56.7° C.
750W 30mins...750x30x60 joules ... 75000x18 ... about 1,500,000j
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