Visual Encyclopedia

Energy

In physics, energy is the property that must be transferred to an object in order to perform work on, or to heat, the object. It can be converted in form, but not created or destroyed. The SI unit of energy is the joule, which is the energy transferred to an object by the work of moving it a distance of 1 metre against a force of 1 newton.

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100% of Electricity Derived from Wind In Denmark

Wind farms in Denmark managed to produce 140% of the country's electricity needs in the early hours of last Friday morning. Way to go Denmark! This goes to show you that a world powered 100% by renewable energy is in fact possible. Now other countries ought to do the same!

Contributed by Sam Feldstone

If you yelled for 8 years, 7 months and 6 days, you would have produced enough sound energy to heat one cup of coffee.

Contributed by Alex Elizabeth Morales

Foods to eat when you need energy

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