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GOWTHAM REDDY

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Harvesting electricity from gravity? Is it possible ?

Since I was kid I watched the world around me going through energy crisis. I was wondering if there was a possibility of producing electricity using "GRAVITY" of planet earth.
I was thinking maybe we could use earths magnetic field, and then placing a conductor and oscillating it. when the oscillations are happening there will be potential difference between two ends and E.M.F is induced.
Are there any other ways of using "GRAVITY" to produce electricity ?
If you have any explanations, Ideas or theoretical possibilities please comment below.

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    Nov 28 2012: Gravity is a force. Energy is a force in motion. A falling object produces energy. Rain produces energy. Gravity is the force that propels whatever is falling. Gravity alone is a stagnant force and produces no energy on its own.

    In order to produce electricity, there must be a force in motion behind it. The flow of electricity produces a counter electromotive force. An electric generator requires a prime mover. The more electricity that is drawn from the generator, the more energy the prime mover needs to drive the generator. Energy out can never exceed energy in. That is the fallacy of your suggestion. If an oscillator is used to drive a coil in the earth's magnetic field to produce electricity, it wall always require more power to drive it than the electricity out that can be delivered from the coil.

    In order to utilize energy, there must be a flow of energy. Heat is the principle source of energy flow. The sun is the primary source. It drives hydroelectric systems. It produces the power to drive wind mills because it drives the weather system that produces wind. It can power solar panels. It produced the original energy that went into fossil fuels. It provides the energy of biomass fuels. Fossil fuels and biomass is the sun's energy stored in chemical form.

    Geothermal is a secondary source of heat. It utilizes the earth's internal heat.

    Tidal power is the only power that I know that is produced directly by gravity because it utilizes the moon's gravity to move the tides. But that is because the moon is in motion. The change in gravity is what is creating the energy. There must always be a change and a force driving the change to produce energy.
    • Nov 28 2012: "In order to produce electricity, there must be a force in motion behind it. The flow of electricity produces a counter electromotive force. An electric generator requires a prime mover. The more electricity that is drawn from the generator, the more energy the prime mover needs to drive the generator. Energy out can never exceed energy in. That is the fallacy of your suggestion. If an oscillator is used to drive a coil in the earth's magnetic field to produce electricity, it wall always require more power to drive it than the electricity out that can be delivered from the coil."

      Electrodynamic tethers do generate more energy than is required to put them in orbit, basically they draw energy from slowing down the rotation of the Earth.
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        Nov 28 2012: Interesting reply.

        However, your example uses the inertia of the earth as its energy source. That's one that I didn't consider.

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