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The underwater stream roughly contains around 21,000 times more energy than the Niagara Falls and by some estimates, could potentially provide up to one-third of Florida's electricity needs. The "marine energy" industry has come up with a number of ideas to make use of the movement of water...

Wind farm may consist of several hundred individual wind turbines which are connected to the electric power transmission network. Offshore wind farms can harness more frequent and powerful winds than are available to land-based installations and have less visual impact on the landscape but...

A good machine to study is the wind-up clock or the counterweight clock. All the parts in one of them can be used to produce the kind of machine you want.

A nuclear reactor can explode like a nuclear bomb. Nuclear energy is bad for the environment. Nuclear energy is not safe. There is no solution for huge amounts of nuclear waste being generated. Most Americans don't support nuclear power. Nuclear waste cannot be safely transported. Nuclear energy...

Steam engines that recover excess engine heat and convert it to useful work. It is considered to be the electric power without pollution. Automobiles, trains, airplanes, ships, buses, motorcycles that operate on clean fuel and are non-polluting. Your home powered entirely by solar thermal...

The intense rays set the sails on fire and staved off the invasion. Since Archimedes, many of the most progressive thinkers have harnessed the power of the sun. The effect is similar to that of our atmosphere which traps sunlight and warms the earth.

The dynamo model that would explain the earths persistent magnetism. If we had a material that could conduct electricity a thousand times better than copper, the system would indeed yield a self-sustaining current.