this post was submitted on 17 Feb 2024
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Showerthoughts

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A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. The most popular seem to be lighthearted clever little truths, hidden in daily life.

Here are some examples to inspire your own showerthoughts:

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  2. The entire showerthought must be in the title
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    • If your topic is in a grey area, please phrase it to emphasize the fascinating aspects, not the dramatic aspects. You can do this by avoiding overly politicized terms such as "capitalism" and "communism". If you must make comparisons, you can say something is different without saying something is better/worse.
    • A good place for politics is c/politicaldiscussion
  4. Posts must be original/unique
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If a machine is never 100% efficient transforming energy into work because part of the energy is converted into heat, does it mean an electric heater is 100% efficient? @showerthoughts@lemmy.world

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[–] kerrigan778@lemmy.world 20 points 2 years ago (5 children)

Essentially all electrical devices are, in addition to whatever else they do, also basically 100% efficient space heaters. A PC running on 300 watts is doing things with that 300 watts but it all ends up as heat, the vast majority of which stays in the room. A light bulb puts out light, but little of that light leaves the house, it's all getting reflected and absorbed until it's mostly a heater in your house.

[–] lolcatnip@reddthat.com 3 points 2 years ago (3 children)

Consuming energy to do something the device isn't intended to do is the definition of inefficiency. You've basically redefined efficiency so as to make it meaningless.

[–] FiskFisk33@startrek.website 10 points 2 years ago

What are you confused about?
That's why they phrased it "also basically 100% efficient space heaters."

Every electric device is a something% effective whatever work they are meant for device, but ALSO a 100% effective space heater.
That second part is meaningless to the devices normal function, but very relevant to the post question.

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