• Categories

  • Most Popular Questions

  • Recently Viewed Questions

  • Recent Answers

    How To Make a Digita… on What does a frequency of 100 H…
    Daigrepont on Can an earthquake cause air tu…
    Benedict on How did God come into exi…
    joshua on How does the human body g…
    Ian on How did God come into exi…
  • Recent Questions

  • Blog Stats

    • 2,218,631 hits
  • Visitors since 11-3-08

    counter create hit
  • Terms and Conditions

  • Warning

    We are doing maintenance on this site, so some posts may disappear for a short time. Sorry. Normal service will soon be resumed...
  • Pages

  • March 2008
    M T W T F S S
    « Feb   Apr »
     12
    3456789
    10111213141516
    17181920212223
    24252627282930
    31  
  • Archives

  • Meta

Can power be beamed to a motor through the air without the need for the remote machine to carry a battery?

Can power be beamed to a motor through the air without the need for the remote machine to carry a battery? If not is there R & D into this?
Lloyd Richards from Cornwall (Age 45-54)

Advertisements

2 Responses

  1. Hello Lloyd,

    Yes it can, and there is active research into this area, but the options are fairly limited. The most obvious source of “wireless power” is Electromagnetic Induction. This works in two steps.

    Firstly, electricity flowing through a tightly bound coil of wire will create an electromagnetic field. Secondly, another coil of wire will “conduct” the electromagnetic fields (in technical terms, “eddy currents” are generated within the coil) and turn it back into electrical current.

    It’s an extremely useful discovery and many modern inventions would not be possible without it. Here is a page about this mechanism and some applications:

    http://en.wikipedia.org/wiki/Eddy_current

    The main problem with this technique of “wireless power” is two-fold. Firstly, it’s an extremely inefficient way to generate electricity. Not only is much of the energy lost in the transfer, but the amount of induction that occurs reduces very quickly as the distance between the two coils increases. The second problem is that generating large powerful electromagnetic fields may not be great from a safety aspect and can interfere with other electronic devices.

    However, there are some alternatives. Here’s a good write-up of some current research into wireless power:

    http://www.technologyreview.com/read_article.aspx?ch=specialsections&sc=emerging08&id=20248

    I think this shows a little more promise of true portable power!

  2. some sort of wave power then like radio waves perhaps.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: