- #1
Yetaphow
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I was discussing solar cells with my friend and we began talking about law of diminishing returns when once a light is lit up, it will send some of the light to the solar cell and energy back into the bulb. When it goes back to the bulb, it won't have as much energy as it did to light the bulb in the first place. As we go on speaking in theory-crafting on possible instances if a solar cell was actually 100% efficient it would still lose energy! He claims this because of the wires. I know some wires do offer resistances which creates heat and therefore you have loss of energy which is loss of efficiency. I told him in any system that has 100% efficiency that there would be no energy lost. He told me I'm missing the point and I told him yes you can lose efficiency through a wire, but this is a system which is the ENTIRE unit. The wires are part of the system. Is there any system that has 100% efficiency involving wires? If so, what type of wires are they? What would the system need?