248

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

you are viewing a single comment's thread
view the rest of the comments
[-] Hugin@lemmy.world 100 points 10 months ago

Not quite. Some is lost in magnetic flux and mechanical deformation. But that is a VERY small about.

[-] IIII@lemmy.world 17 points 10 months ago

Do those not end up as heat later down the line as well?

[-] Ross_audio@lemmy.world 27 points 10 months ago

Yes, but magnetic flux causes radio waves and there isn't a guarantee these will turn into heat in the space you are heating.

[-] m0darn@lemmy.ca 2 points 10 months ago

That's an interesting point about radio emissions leaving the heated space.

this post was submitted on 17 Feb 2024
248 points (97.3% liked)

Showerthoughts

30017 readers
885 users here now

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. A showerthought should offer a unique perspective on an ordinary part of life.

Rules

  1. All posts must be showerthoughts
  2. The entire showerthought must be in the title
  3. Avoid politics
    • 3.1) NEW RULE as of 5 Nov 2024, trying it out
    • 3.2) Political posts often end up being circle jerks (not offering unique perspective) or enflaming (too much work for mods).
    • 3.3) Try c/politicaldiscussion, volunteer as a mod here, or start your own community.
  4. Posts must be original/unique
  5. Adhere to Lemmy's Code of Conduct

founded 2 years ago
MODERATORS