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1. Tagomago (tagomago@mastodon.social)'s status on Wednesday, 29-Jun-2022 18:00:27 UTC Tagomago

   @bob Heating appliances are pretty efficient in that they convert 100% of the power in heat (one way or another), but the power needed to produce heat electrically is pretty high, almost by definition (resistance).

   • Tagomago (tagomago@mastodon.social)'s status on Wednesday, 29-Jun-2022 18:09:43 UTC Tagomago

     in reply to

     @bob Turns out people are so full of opinions about this very subject:

     https://www.theguardian.com/notesandqueries/query/0,5753,-2452,00.html

   • Tagomago (tagomago@mastodon.social)'s status on Wednesday, 29-Jun-2022 18:37:06 UTC Tagomago

     in reply to

     • Micke

     @micke @bob Correct. Even salt water is lower heat capacity than pure water (which I believed to be the opposite). So you throw the salt in before boiling and it'll boil quicker.

   • Micke (micke@camp.smolnet.org)'s status on Wednesday, 29-Jun-2022 18:37:07 UTC Micke

     in reply to

     • Tagomago

     @tagomago @bob Water also has a very high heat capacity, so it needs extra power as compared to other materials:

     "Water has to absorb 4,184 Joules of heat (1 calorie) for the temperature of one kilogram of water to increase 1°C. For comparison sake, it only takes 385 Joules of heat to raise 1 kilogram of copper 1°C."