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parsec
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If you could get a circuit to oscillate quickly enough, could visible light be produced using a simple metallic antenna?
parsec said:If you could get a circuit to oscillate quickly enough, could visible light be produced using a simple metallic antenna?
Phrak said:The question is, could you get a circuit to oscillate fast enough?
Phrak said:The question is, could you get a circuit to oscillate fast enough?
Born2bwire said:Could we manufacture an antenna and system on scale to resonate at visible light?
Generally the classical electromagnetic theory holds well until around the Terahertz range. From there, it is usually best to use quantum electrodynamics with a mix of classical electromagnetics when appropriate. So if you want to design a device that radiates visible light, classical EM would give you a device that is physically unrealizable. Quantum electrodynamics gives you options like black body radiators or emmission from excited states that can be used to design real devices that will emit visible light. This can vary from heating the tungsten wires in your incadescent lights to flourescent lights or even light emitting diodes or transistors (I am not sure if they have gotten the LET into visible light region yet, my understanding from the talks that I attended a few years ago is that the LET was only recently invented).
raknath said:I am fairly conviced that ordinary vibratory dynamics or standard electromagnetic theory cannot do this, but is there some QED concept that can be used here, i am sorry i did not follow the post on the QED part can some one make it a little more verbose
Thanks
An antenna can create visible light through a process called electroluminescence. This involves converting high-frequency electromagnetic radiation into light energy, which then appears as visible light.
The materials needed to create visible light using an antenna include a conductive material, a high-frequency power source, and a light-emitting material such as a semiconductor or phosphor.
While most antennas are designed for specific purposes such as receiving or transmitting radio waves, any antenna that can produce high-frequency electromagnetic radiation can potentially be used to create visible light.
The efficiency of this process can vary depending on the materials and design of the antenna, but it is generally considered to be more efficient than traditional methods of producing visible light such as incandescent or fluorescent bulbs.
The ability to create visible light using an antenna has potential applications in areas such as telecommunications, lighting, and displays. It could also have applications in medical imaging and sensing, as well as in renewable energy sources such as solar panels.