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wireless energy

  • 24-08-2012 9:41pm
    #1
    carlowplayer
    Registered Users, Registered Users 2 Posts: 519 ✭✭✭


    a few months back i was watching sky news and there was a tech section about how electricity could be transferred from a large coiled copper wire in the ceiling that could transmit energy to any devices in the house.im wondering is this possible?


Comments

  • #2
    Shane-KornSpace
    Closed Accounts Posts: 1,025 ✭✭✭Shane-KornSpace


    when you google "wireless power", theres lots about it.
    apprently Tesla successfully powered lightbulbs in his home wirelessly in the late 1800s and early 1900s.
    its definitely the future of cleaner energy. it wont be electricty,itll probably be something like radiowaves.


  • #3
    bbam
    Closed Accounts Posts: 7,410 ✭✭✭bbam


    The tinfoil hat brigade will have a field day. They're already afraid of microwave ovens, mobile phones and power lines near them. They'll never trust this latest black magic.


  • #4
    BrianDug
    Registered Users, Registered Users 2 Posts: 163 ✭✭BrianDug


    Yes its possible, electromagnetic fields induced into another coil as current. How practical? It is hard to know, how far the magnetic fields radiate will depend on numerous factors.

    I feel for a device to radiate a strong magnetic field omni directional it would need to a very large current.

    I would also envision interference problems with some electronic equipment in the vicinity of a strong magnetic field.

    Its early for this technology but it can be seen it some electronic charging devices.


  • #5
    engineermike
    Users Awaiting Email Confirmation Posts: 280 ✭✭engineermike


    carlowplayer wrote: »
    a few months back i was watching sky news and there was a tech section about how electricity could be transferred from a large coiled copper wire in the ceiling that could transmit energy to any devices in the house.im wondering is this possible?

    I was pondering the physics of good broadband in the midlands also the other nite- everything is possible, weres thers a will ther is a way.
    See lightning as an example - crude but conductive. The problem i see with that is all other materials in a home / building have to be less conductive - thats retro fit out of the picture - purpose built only.
    Also the electricians won't like it one bit - ! :p


  • #6
    Capt'n Midnight
    Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 93,562 Mod ✭✭✭✭Capt'n Midnight


    Main problem is efficiency.
    You are radiating power in all directions all the time. In ham radio the technical term is "skywarmer"

    And yes very very large amounts of RF are not good. If you want to do much more than charge a mobile phone overnight you are going to have to be very careful about metal objects in the house.


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