MKultra asked in Science & MathematicsPhysics · 1 decade ago

Why can't we harness VAST natural energy?

I live by the beach. In just a few thousand square metres of the sea the energy equivalent of multiple nuclear bombs is happening literally ALL the time EVERY day. We are talking about the basic and powerful energy of gravity between the Earth and the Moon. Limitless and predictable energy. Why are ideas for harnessing this VAST energy so dated (based on victorian steam engines) of using motion of waves up and down to generate heat and steam to fire old power stations?

Come to think of it, why is practical nuclear fusion now never publicly seen now as a potential energy source?


My question was about the inadequacy of being able to exploit huge amounts of predictable natural energy (tides) that have huge energy.

I was under the impression that nuclear fission was much safer than fusion?

1 Answer

  • bonobo
    Lv 7
    1 decade ago
    Favorite Answer

     We can harness vast amounts of natural and renewable energy sources.

     It is just a matter of how efficient and practical the process is. The amount

     of energy in a tank of gasoline is enormous compared to the energy obtained

     from a car covered in solar panels. That is why cars today for the most part

     run on gas.

     Sometimes we just have to wait until technology advances enough so that

     the cost of using renewable energy becomes practical.

     Tidal power is being harnessed in some areas using underwater propeller-

     type generators.

     As of now nuclear fusion is not a practical energy source since the net energy

     yield from a controlled thermonuclear reaction is very low. Fission reactors work

     well but have the problems associated with safety and radioactive waste that

     remains lethal for many thousands of years.

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