Topher925 said:Not that I recommend doing this, but if you can find a safe way to suspend a florescent light bulb near a high tension wire you will see it light up, even if the cathode is burnt out.
http://en.wikipedia.org/wiki/Wireless_energy_transfer
ZapperZ said:
There are a few ways to light a light bulb without making physical contact. One method is by using electromagnetic induction, where a changing magnetic field can induce an electric current in a nearby conductor. Another method is by using radio waves to transfer energy wirelessly to the light bulb.
Yes, it is possible to light a light bulb without any wires or batteries. This can be achieved by using a phenomenon called electrostatic induction, where a charged object can induce an opposite charge on a nearby conductor, causing a flow of electrons and lighting the bulb.
A wireless power transfer system uses an alternating current (AC) source to generate a changing magnetic field. This field is then picked up by a receiver coil in the light bulb, which converts the magnetic energy into electrical energy to power the bulb. This process is known as electromagnetic induction.
There may be safety concerns with using wireless power transfer systems to light a light bulb. The high voltage and frequency used in these systems can pose a risk of electric shock if not properly designed and used. It is important to follow safety guidelines and use caution when experimenting with wireless power transfer.
No, a light bulb cannot be lit without any external power source. Even in wireless power transfer systems, an external power source is needed to generate the changing magnetic field that powers the light bulb. Without any external power source, there would be no energy to transfer and the light bulb would not light up.