CERN Accelerating science

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Briefing room

If you could convert all of the energy contained in 1 kg of sugar, or 1 kg of water, or 1 kg of any other stuff, you could drive a car for about 100,000 years without stopping!

Why? Albert Einstein, in 1905, wrote down the famous equation E=mc2. It says that mass is a very concentrated form of energy.

Energy is like the 'money' of nature; it comes in two different currencies, and with an enormous exchange rate - the square of the speed of light .

1 kg corresponds to 25,000,000,000 kWh of energy; 1 gr would be enough to supply energy to a medium-sized town for a whole day!

But how can energy be transformed into matter, or vice versa?

(Briefing room - page 1 of 4)
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