Comment on If the color of the Sun was orange, wouldn't the clouds and everything white also be orange? My friend is adamant that 30 years ago the "real" Sun was orange but got replaced with a white LED.

actionjbone@sh.itjust.works ⁨17⁩ ⁨hours⁩ ago

• kkj@lemmy.dbzer0.com ⁨17⁩ ⁨hours⁩ ago

  LEDs produce about half their input energy in heat, with the other half being light. Incandescent bulbs output about 90% as heat and 10% as light.

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  • Thorry@feddit.org ⁨17⁩ ⁨hours⁩ ago

    This can very a lot depending on the LED. The average LED is indeed somewhere around the 50% and 60% mark. But there are LEDs out there that can get up to 90+%

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    • kkj@lemmy.dbzer0.com ⁨15⁩ ⁨hours⁩ ago

      The highest I’m seeing for wall-plug efficiency (i.e. the percentage of the consumed electricity that’s released as light rather than heat) is 83.2%, and that’s for red LEDs. For anything you’d want to use for general-purpose lighting, the number is much lower.

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      • Thorry@feddit.org ⁨14⁩ ⁨hours⁩ ago

        Yeah wall plug efficiency is much harder since you need to do the power conversion as well, in a small and cheap way for mass production. I’d assume they have a specialized power supply for the big LED in the sky?

        There are super efficient LEDs used in flashlights, the lumen per watt figures these days are absolutely crazy.

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