This kid is going places.
Not really, reality will hit him rather hard
No way a teacher wouldn’t know this!
Okay so the light bulb example can be wrong. My grandpa would heat his room with a 100 watt bulb meaning both the light and the heat were useful outputs.
I mean isn’t this wrong? It may be near 100% but there’s never 100% conversion to a single kind of energy. For example, even if it’s just a tiny faction, magnetic field convert electrical energy to kinetic energy, no?
100% of that tiny fraction still returns to heat.
Ah so we count following convertions. That clarifies things, thx.
Aren’t computers damn near 100 percent efficient heaters?
No, they’re damn near as power-efficient as electric space heaters though if I’m not mistaken, but these are not 100% efficient.
Forgive me for being argumentative, not my intention to be combative but now that I’m thinking more about it, isn’t everything a 100% efficient heater? Like sound hits an object, and is turned into heat. Light hits an object and is turned into heat. Electricity travels down a wire and is turned into heat(usually).
Yep, every electric device is a toaster, some are just super inefficient at it.
Remember: Every device is a smoke machine if you use it wring enough.
Also: Every electrical device is filled with smoke and the job of electricians is to stop the smoke from escaping, which would render the device useless.
The correct technical term is magic smoke.
Today I learned
Or light.
Those give off light. Still not efficient
Only if that light escapes through a window. Otherwise, it is heat.
Or chemical reactions.
The entropy machine has a 100% efficiency
I’m not well-versed on this topic, but doesn’t the AC frequency cause alternating fields in the heating element, making it vibrate slightly? If that’s correct, then you’re losing an incredibly stupidly tiny amount of energy as sound too.
Even sound energy eventually ends up as heat, though!
And that satisfying glow is losses as light, which will do some heating, but not as efficiently
Unless it is visible to the window at which point the light escapes and doesn’t heat your house 100% efficiently
Most of the heating energy would actually be IR, which many types of window glass will be designed to reflect. It probably depends on what kind of coatings are used. Basically all car windows block IR to help keep the inside of the car cool in the sun.
It’s a silly thing, but if it glows orange, and if any of that orange light escapes or is visible from the window, it is not 100% efficient. But this is just pedantic in reality, even cheap heaters will do a good job of converting electricity into heat.
There’s a whole class of electric heater that do this intentionally. Radiant heaters are awesome for outdoor patios and other spaces like uninsulated garages where you care more about heating surfaces than the air itself.
I don’t know why but as much as I’ve read about radiant heaters to try understanding them your random comment I read here is what it took for things to finally click into place for me. I really love those ah ha moments. Just wanted to say thank you.
If the room has no windows, the light will turn into heat with 100% efficiency.
Electronics teachers generally clarify “other than resistive heaters”
Every electric device is a heater. Some just do other things too.
Indeed we’ve plugged in a bitcoin miner to our central heating and now heating is “free”. I’m not sure how profitable it is when you’re not using the heat though.
A brushless motor only converts ~5% of its input to heat. That’s low enough that you can reasonably call it a side effect.
Now, a computer, that’s a heater that happens to produce math as a side effect. 100% of its input ends up as heat.
I love firing up my PC and gaming on cold winter nights. A well placed fan or two and I can spread it through my entire apartment and the heat won’t kick on all night. Ends up saving me money, my heater costs way more than my PC to run.
Sounds like your cold winter nights are not very cold.
It goes down well below freezing here. My apartment is small.
By “well below” do you mean -30? Or do you mean -5? Either way, you must have much better insulation than I do, because I have multi-kilowatt heaters and even on not-so-cold days my poor PC can’t compete, no matter how hard I game.
Like anywhere from -15 to -4 C (around 5-25 F). I also keep it around 15 C (60 F) in my apartment to keep heating costs lower so it doesn’t need to get super warm to keep my thermostat from kicking on.
It all becomes heat eventually in the end though. Sometimes it’s just a multi step complex process outside the physical bounds of the heater.
Is the universe just God’s space heater?
In god’s universe it is winter and that’s why the earth is heating up. It says so right in Ecclesiasties. Boom, toasted climate change nerds.
Depends on the god.
math as a side effect
That’s a funny way of spelling porn
Fun fact! Your porn machine can also be used to shitpost.
It might output the results of a computation once in a while though
Is a heating element actually 100% efficient, though?
Heat pumps move heat from outside to inside, and they use less energy than the amount that is brought into the insulated area, resulting in efficiency numbers over 100%. (less energy used than the amount brought inside was used to bring the inside energy levels up)
Some of the energy is converted to light.
Which unless it goes out through a window would eventually be turned into heat anyway, right?
Yeah it’s still thermal radiation, us being able to see it isn’t a disqualifier :p
100% of the energy is converted to light, its just in the IR spectrum.
Unless u feed the heater with AC power then you are also generating magnetic fields/radio waves…but those are also just photons (light) with a very long wavelengh…
Space heaters mostly heat by convective heating, where the heat energy is transferred from the element to the air molecules around it. This doesn’t involve infrared radiation (though in practice it is involved because any object above 0 K radiates infrared).
Noise would be a small but non-zero form of heat loss that shouldn’t contribute to temperature increase
Noise would turn in to heat as it’s absorbed, so it’s just heat with extra steps. Same deal with lights
Any resistance heater, but the most efficient ≠ the most cost effective.
Isn’t some energy still dissipated as light instead of heat?
When light is absorbed by surface, the material temperature increases and remits light at a longer wave, ussually in the IR spectrum. So its safe to say all light is heat enegry.
Which travels to a location, hits it and is eventually converted to heat.
So not a heater…but the universe.
Typically a heater is in a room, so any light doesn’t need to go further than the nearby walls
But a heater produces heat and light. The light might turn into heat later but that’s not heat from the heater. Otherwise everything is s heater and it’s all part of the same heater… the universe.
Also a question of optimizing its use
A completely valid pannini press, imo.
Like this is literally the ‘modern problems require modern solutions’ meme.
I’ve used older PC battlestations of mine as ‘bonus’ spaceheaters more than once, lol, sorta like those ‘pocket warmer’ apps for phones that would just run some absurd computation that would redline the cpu, hahah!
I had some frozen imitation crab legs that I wanted to eat, but didn’t want to microwave proper. I put them on top of my PC’s GPU radiator and ran a stress test while watching stuff so it would thaw faster without overheating.
That’s sausage-bread though
Oh.
Sorry, I’m… actually unfamiliar with concept.
Is that basically a sausage with a small loaf of bread baked around it?
Sorry it’s a sausage roll in English; it’s called sausage bread in Dutch
I have a little “tradition” of doing a playthrough of very hardware-demanding stuff in winter. Tarkov is one of my favs for this since it’s unoptimized as hell and the post soviet aesthetics really fit the season
I may get flack for this but mine was the Cinematic Mod version of HL2.
Not because I wanted … the terrible ‘cinematic’ music, or ludicrous XXX character model ‘upgrades’… I genuienly liked the revamped maps, greater texture detail.
I waited until winter to rip my DVD collection because it meant hours of high throttle on the PC.
100% efficient!!! You’re using all the energy to do meaningful work!
Setup sponsored by Cyberpunk 2077: Ultimate Edition, to have a real toasting effect.
noo get the oily greasy food away from technology 😭
What are you, afraid of fire? This is progress. Cavemen were bold and progressed.
The resulting grease fire will increase the electrical power->heat conversion calculation over 100%!
GAH! Unless you personally disinfected them and wiped them clean of disinfectant, GAH! Know how many people play footsie with those?
… Some people keep track of their power bricks and know where they’ve been.
… Never thought ‘good cable management’ would become a hygiene/sanitation issue, but, apparently it is.
Not me. I leave my power bricks at the bus station and tell them don’t call until you have daddy’s money.
… so… you’re saying I can rent a power brick from you?
