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Energy transfer with electromagnetic waves
As we know that the electrical energy is transferred via electromagnetic waves from the source to the load. My question is that, even if there is transfer of energy through the electromagnetic waves, ...
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What is the theoretical maximum efficiency of converting electricity to EM radiation? Is there such a thing?
It turns out LEDs can have an efficiency of more than 100%, i.e. they output more light energy than electrical energy goes in. The 'missing' energy is taken from their thermal energy so the LED cools ...
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How do you make electricity from the whole EM spectrum? [duplicate]
If we can make electricity from visible light then why can't we make electricity from all of the EM spectrum? If someone had an antenna or a plate of some sort to attract electromagnetic waves and ...
