Cold is the presence of low temperature, especially in the atmosphere. In common usage, cold is often a subjective perception. A lower bound to temperature is absolute zero, defined as 0.00 K on the Kelvin scale, an absolute thermodynamic temperature scale. This corresponds to −273.15 °C on the Celsius scale, −459.67 °F on the Fahrenheit scale, and 0.00 °R on the Rankine scale.
Since temperature relates to the thermal energy held by an object or a sample of matter, which is the kinetic energy of the random motion of the particle constituents of matter, an object will have less thermal energy when it is colder and more when it is hotter. If it were possible to cool a system to absolute zero, all motion of the particles in a sample of matter would cease and they would be at complete rest in this classical sense. The object would be described as having zero thermal energy. Microscopically in the description of quantum mechanics, however, matter still has zero-point energy even at absolute zero, because of the uncertainty principle.

View More On
  1. tac

    Enough!! already, with the endless cold calling....

    from Indian 'parsons' called Dominic, Leonard, Crispin, Andrew and Colin. Asking for 'Mistah Folly'. I began my revenge this morning at ten of ten, when the first caller this morning announced that he wished to 'spik with Mistah Fooly'. I replode, 'I'll just get him for ya....' And...
  2. PNWguy

    The cold broke my shocks??

    We had a cold snap here on the East side last weekend and it got down to -5 at my house. Vehicle is a 2005 Yukon with 90k miles on it and had newer OEM shocks. Drove it to town and noticed the back end was bouncy and felt weird. Parked and checked and shocks are attached and look fine...
  3. PNWguy

    Best cold prevention remedy/potion?

    The first aid cabinets at work were all completely stocked with a variety of OTC pain meds, bandaids, allergy meds, and something called Vita Cold... Whenever I started feeling something coming on, like getting a scratchy throat, or aches, or eyes starting to hurt, etc. I would pop a packet...
  4. prkrgrp

    coyote wonderland cold, no wind, and they were hungry.

    2/6/19 got out for a couple days high pressure set in and it was cold, no wind and they were hungry. set the mojo rabbit decoy in some sage and blew 3 times on the Les Johnson close reed open jack, and it only took about 3 min for this female to come check it out, old painless drops another...
  5. DirectDrive

    CZ 75 Cold War Commemorative

    Is it me or is this just a weird way to market a handgun ? CZ 75 B 9MM COLD WAR COMMEMORA
Back Top