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Electricity Facts
Is steam still used to make electricity today?

“Most of the world's electricity is still made by steam turbines, since coal, natural gas, and nuclear plants all work by boiling water to spin a turbine.”

Reference: US Energy Information Administration

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What are the different types of laptop batteries?

There are currently three types of batteries commonly used to run people's laptops:
1) Nickel Cadmium (Ni-Cd) batteries were the standard technology for years, but are now out of date.

2) Nickel Metal Hydride (Ni-MH) batteries are a cadmium-free replacement for Nickel Cadmium.
3) Lithium Ion (Li-ion) is the battery you want for your laptop and is the current standard for portable power.

Did the ancient Greeks have a steam engine?

Hero of Alexandria described the aeolipile, a spinning steam-powered device, in the first century AD, but it was treated as a curiosity rather than a machine for work.

Energy consumption in the U.S.

According to the U.S. Energy Information Administration, electricity consumption will increase by 51 percent from 2002 to 2025.

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