LOL !
I've heard that the UK has had as low as 945 mbar during storms. Now, since aircraft barometric altimeters only adjust down to 942 mbar IIRC, that's awfully close to getting a heavy landing or an unwanted float ( mind needs to think which way it would go if it went below 942 local ) unexpectedly. Good thing that commercials have radio altimeters.
Graham
I expect that's simply liberation of dissolved air.
Graham
Depends if you like them soft or hard.
Graham
Correct. It's also not good for tea too.
Ever heard of "the Curate's egg" ?
Graham
As Rich pointed out earlier, boiling occurs when the vapour pressure equals the ambient pressure. The reason is that at that point there's nothing to prevent bubbles from growing without limit. You do need to nucleate the bubbles first, of course, which is why still liquids can be superheated considerably before they launch.
Cheers,
Phil Hobbs
little
Isn't it always ? The things I've seen people do !
Graham
atm
Sure, but my method works in the office kitchen with an electric kettle. Note that the temp drops a couple of degrees when power is removed, indicating that the liberated steam is (briefly) over 100C.
Graham
But there are hot and cold people by at least a degree either way.
Graham
p.s. I thought it was 37.4 anyway.
Graham
37.0 C = 98.6 F (usually quoted as body temperature over here).
Cheers,
Phil Hobbs
The way the French do ? Wonder what they do in Quebec !
Graham
Could this possibly be the funniest and most arcane thread to appear in s.e.d for a long long time ?
Graham
Nah. Or at least, not just that. Pull (and hold) sufficient vacuum on a container with water in it, and the water will indeed boil away at low temperature. Granted, you'll get any dissolved air out of it during the process, but that'll only be part of what goes on.
Not here. I have a CRT display and read news in white-on-black. Caps have more pixels set, therefore more illuminated CRT pixels so more energy used.
Bye.
Ouch ! That must hurt !
Graham
It doesn't matter if they're set or reset. If you're perfectly consistent, you might save kTlog(2) per character-instance, but only when the messages are erased. So you might as well use all lower-case, if you're really shiftless.
Yes... less caloric input to the egg per unit time.
He is an idiot. The excess air comes out of water LONG before it ever reaches a vacuum.
It changes phase, DonkTard. Lay terms... that's boiling, idiot, which it physically does quite violently, until it is all vaporized, and removed from the chamber (most of it).
Is it all black or all white that uses more power on a CRT?
LCD? Plasma?
Subtractive or additive color mixing?
On a CRT the illuminated pixels come from (multiple) electrons sent from the back end of the tube at high speed, dark pixels are where no electrons are flowing.
LCDs use a kind of optical gate to control the flow of light, dark pixels and light pixels cost pretty-much the same amount, most of the energy is used to run the backlight.
these are like a bunch of tiny neon lamps, they light up when a current is flowing, dark pixels use less power.
LED displays are like that too.
Until the dark emitting diode is prefected all luminescent displays will be additive :)
Have something to add? Share your thoughts — no account required.
Ask the community — no account required