Hi friends
Returning time, something busy and lack good q Internet sesion I made a post prevented me new things, but tim that and here I informed of something new.
Ing and researchers from MIT ( Massachusetts Institute of Technology), a year ago proposed to realize wireless power using electromagnetic waves volatile harmless. These waves are produced today by the antennae of wireless communications, but quickly fade away from its generating source.
And that came to define and managed to light a 60W bulb at 2 meters away, this with the help of two shaped copper antennas esperiral, like a coil and a half meter.
This has been due to studies reliza on transmitting electric power in the communications antennas and dissipating.
The scientists achieved this hasan and named it "Witricity" or "WiTricity" from "WIFI" and electricity.
The "trick" is that both coils of copper are "coupled" and specially designed to "resonate" with the magnetic field, inside which there is a strong interaction between the transmitter and receiver unit. Outside the magnetic field in the surrounding environment, everything is be the norm.
two coupled resonant objects, ie, that vibrate at the same frequency tend to exchange energy in an efficient manner. With this design, the transfer of electricity, which tend to dissipate naturally, is concentrated in a limited space. "A laptop computer was inside a room equipped with this kind of wireless power" says Peter Fisher, a member of the MIT team, it recharges automatically, without having to be plugged. In fact, not even need to have a battery to operate inside this room "
