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:

Rules

  1. All posts must be showerthoughts
  2. The entire showerthought must be in the title
  3. No politics
    • 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
  5. Adhere to Lemmy's Code of Conduct and the TOS

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Whats it like to be a mod? Reports just show up as messages in your Lemmy inbox, and if a different mod has already addressed the report, the message goes away and you never worry about it.

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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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[–] ChonkyOwlbear@lemmy.world 166 points 2 years ago (23 children)

You know how you turn on an electric heater and the filament begins to glow? That is energy being converted to light, so not 100% efficient.

[–] xigoi@lemmy.sdf.org 47 points 2 years ago (13 children)

Doesn’t the light turn into heat anyway as soon as it’s absorbed?

[–] sukhmel@programming.dev 8 points 2 years ago (3 children)

The visible part of the spectrum is likely going to be absorbed somewhere far away from the place you're trying to heat up. Also, I'm not educated enough to tell if there will be further losses of energy

[–] FiskFisk33@startrek.website 3 points 2 years ago* (last edited 2 years ago)

that's only true if you shine it out a very large the window

normally windows cover a quite small fraction of a rooms surface area

but sure, if a few fractions of a percent leave through a window, i guess its technically not a 100% effective space heater, if we define the work as heating only the relevant room.

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