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Kinetic energy use: future or gimmick?

By WackyWheels ·
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Putting the details of the laws of physics aside (kinetic energy, accelerating body to reach velocity, etc.), this type of energy resource seems largely infinite (add to wind, water, solar energy). It seems traditional to have new and largely unexplored sources of energy be tested on small things (such as the new Infinity Cell for the iPhone) (read http://bnn-news.com/infinity-cell-lets-charge-iphone-simply-shaking-93676 for some details if you like). But is there really a solid future for such energy?
I believe these things should be used to power small electrical appliances like flashlights, wrist watches, cellphones. This can be pretty handy when travelling, hiking or having a morning run.

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You can't put aside the laws of physics.

by CharlieSpencer In reply to Kinetic energy use: futur ...

Sure, you can discount them when generating small amounts of energy manually, as in your examples. You'll never power a large device kinetically. The amount of work needed to generate the output will be more than the work you'll get from the energy generated.

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Well there is already flashlight and wrist watches that are powered by...

by Slayer_ In reply to Kinetic energy use: futur ...

...shaking.
We keep some of these flashlights in our snowmobiles. Handy if your caught in the dark and need to use a dark warm up hut or read a map.
Keeping a normal battery powered one is kind of pointless. After a year of minus 30 temperatures, they usually don't work very well.

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Neither do I

by aidemzo_adanac In reply to Well there is already fla ...

"After a year of minus 30 temperatures, they usually don't work very well." After about 1 minute I'd be saying F.U, you don't pay me enough to work in this crap, where do you think I am, Canada?

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Small vision

by aidemzo_adanac In reply to Kinetic energy use: futur ...

Is it not a bit shortsighted to see kinetic energy sources as only able to power small appliances? I think of the soccer balls sold in Africa that provide a charging and light source for students with no power at home. As for the shake charger, been around for freakin' decades, LONG before cell phones were invented. Emergency flashlights, automatically winding watches?

This is not the end all of the solution, it is a test application to breed further development.

When the internal combustion engine was created, did people think it would later power a locomotive pulling thousands of tonnes across the nation?

When Germany was firing jet propelled rockets across the English Channel in the 40's, it would have seen a bit far fetched that such primitive systems would later be used to propel man to the moon, satellites into orbit, Hubble out to space etc.

Inventions are just a way of finding limitations to technology, which leads to further development and even greater technology.

There are wind farms that power small cities, I'm sure that the Danes didn't envision that when they were grinding grains into flour.

Technology in it's infancy appears to be so limited and restricted in use, however it is just time and ingenious human minds that will see other advances come to fruition, as they always do.

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Hate to mention this, but I've a movement watch I bought in 1970

by Deadly Ernest In reply to Kinetic energy use: futur ...

that winds itself due to the kinetci energy of me moving about while wearing it. The tech was old and well settled at the time I bought the watch. Sadly, within a few years the only new watches you could buy were cheap electronics because the retailers could sell them a lot cheaper and make five times the profit on them

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