2007-09-25 03:27:19 · 11 answers · asked by opjames 4 in Science & Mathematics ➔ Astronomy & Space
The coldest you can get is upto 1/trillionth of absolute zero.
Absolute zero describes a theoretical system that neither emits nor absorbs energy. The Absolute zero temperature is known to be 0 K (–273.15 °C). While it is possible to cool any substance to near absolute zero, it can never actually be achieved.[1]
Absolute zero is the point at which particles have a minimum energy, determined by quantum mechanical effects, which is called the zero-point energy.
By international agreement, absolute zero is defined as precisely 0 K on the Kelvin scale, which is a thermodynamic (absolute) temperature scale, and –273.15 °C on the Celsius scale.[2] Absolute zero is also precisely equivalent to 0 °R on the Rankine scale (also a thermodynamic temperature scale), and –459.67 °F on the Fahrenheit scale.
While scientists cannot fully achieve a state of “zero” heat energy in a substance, they have made great advancements in achieving temperatures ever closer to absolute zero (where matter exhibits odd quantum effects). In 1994, researchers at NIST achieved a record cold temperature of 700 nK (billionths of a kelvin). In 2003, researchers at MIT eclipsed this with a new record of 450 pK (0.45 nK).
2007-09-25 03:31:37 · answer #1 · answered by vasudev309 2 · 3⤊ 1⤋
Absolute Zero is the complete lack of heat. All molecular motion stops.
Even thought the big bang was 17 billion years ago, there's still about 4.5 degrees of heat remaining from the initial fireball out in deep space. So, no where in *our* universe (unless it's artificially created) is it absolute zero. (The coldest place on Earth is about .007 degrees above absolute zero - in underground labs looking for Dark Matter - and it's even colder than deepest space.)
2007-09-25 11:09:29 · answer #2 · answered by quantumclaustrophobe 7 · 0⤊ 0⤋
Well there is absolute zero, but even colder than that is super absolute zero, and if you want to journey further into Minus 0-land, there is super-duper-freakin'-cold, totally wierd, final, and thats-the-end-of-that absolute zero.
Absolute zero is the lowest possible temperature, at which point the atoms of a substance transmit no thermal energy - they are completely at rest.
However, Some substances, when cooled to near-absolute zero temperatures, reach a state of matter known as a superfluid, which exhibit strange properties.
We may find someday that there is a colder state than absolute zero, in which case absolute zero would no longer be absolute.
2007-09-25 10:54:26 · answer #3 · answered by Anonymous · 0⤊ 1⤋
The theoretical point at which all thermal energy has been extracted from a system is called 'absolute zero' and is about -273 degrees C. (Also called 0 Kelvins) It's never actually been produced in a laboratory, but it's pretty routine to get down to .01K or so.
Doug
2007-09-25 10:32:32 · answer #4 · answered by doug_donaghue 7 · 0⤊ 1⤋
The coldest it has gotten in the universe is 3.7K
2007-09-27 22:02:36 · answer #5 · answered by johnandeileen2000 7 · 0⤊ 0⤋
0 degrees Kelvin(absolute zero)
2007-09-25 10:29:53 · answer #6 · answered by nobodinoze 5 · 4⤊ 1⤋
zero kelvins or negative 273 celcius
2007-09-25 10:34:52 · answer #7 · answered by Anonymous · 0⤊ 0⤋
Theroretlcly it can get to absoulte 0 that is 0,K -273C
2007-09-25 23:27:59 · answer #8 · answered by Mr. Smith 5 · 0⤊ 0⤋
Absolute zero is what it's called. Achieving it would be a cold day in.....
Well, you know.
2007-09-25 10:32:17 · answer #9 · answered by Handy man 5 · 0⤊ 1⤋
Absolute zero (about -270C) - theoretically, that's when
the activity in an atom stops (the electron "freezes" in place)
2007-09-25 10:31:22 · answer #10 · answered by Anonymous · 2⤊ 1⤋