Argon - THE HOTTEST GAS ON EARTH!
By zapping a piece of aluminum with the world's most powerful x-ray laser, physicists have heated matter to 3.6 million degrees Fahrenheit (2 million degrees Celsius)—making it briefly the hottest thing on Earth.
Liquid hydrogen is the coldest substance known to man, minus 400 degrees. ALSO: A Bose–Einstein condensate (BEC) is a state of matter of bosons confined in an external potential and cooled to temperatures very near to absolute zero (0 K, ?
Scientists cooled a copper cube inside a cryostat, the first such container built that can keep substances so close to absolute zero. A chunk of copper became the coldest cubic meter (35.3 cubic feet) on Earth when researchers chilled it to 6 millikelvins, or six-thousandths of a degree above absolute zero (0 Kelvin).
The most natural coldest thing on the earth is the ice of Antarctica. By the 30 years of the satellite, records researcher reveals that the ice of Antarctica emits the lowest temperature. The temperature of this ice is lower than the dry ice. The lowest natural temperature of this ice is around -136 F.
Scientists have produced superheated gas exceeding temperatures of 2 billion degrees Kelvin, or 3.6 billion degrees Fahrenheit. This is hotter than the interior of our Sun, which is about 15 million degrees Kelvin, and also hotter than any previous temperature ever achieved on Earth, they say.
Absolute zero cannot be achieved, although it is possible to reach temperatures close to it through the use of cryocoolers, dilution refrigerators, and nuclear adiabatic demagnetization. The use of laser cooling has produced temperatures less than a billionth of a kelvin.
Dry ice sublimates at 194.65 K (−78.5 °C; −109.3 °F) at Earth atmospheric pressures. This extreme cold makes the solid dangerous to handle without protection due to burns caused by freezing (frostbite).
1) If the volume of a container is increased, the temperature increases. 2) If the volume of a container is decreased, the temperature decreases. This means that the volume of a gas is directly proportional to its temperature. If you heat a gas you give the molecules more energy so they move faster.
When you heat a gas, both its vapor pressure and the volume it occupies increase. The individual gas particles become more energetic and the temperature of the gas increases. At high temperatures, the gas turns into a plasma.
There are three types of temperature scales commonly used today: Celsius, Fahrenheit, and Kelvin. We are used to expressing temperature with degrees Fahrenheit (F). Scientists often use degrees Celsius (C), but the Kelvin (K) is the SI unit for temperature.
There are three different systems for measuring heat energy (temperature): Fahrenheit, Celsius, and Kelvin. In scientific measures, it is most common to use either the Kelvin or Celsius scale as a unit of temperature measurement.
The average normal body temperature is generally accepted as 98.6°F (37°C). Some studies have shown that the "normal" body temperature can have a wide range, from 97°F (36.1°C) to 99°F (37.2°C). A temperature over 100.4°F (38°C) most often means you have a fever caused by an infection or illness.
Water vapour has 100 times more Greenhouse effect than CO2. The current increase in CO2 is the highest in 5 million years but the temperature is really much higher when compared to same CO2 levels in the past.
The ignition temperature of gasoline ranges from 530 and 553 K which is equivalent to 494.33 - 575.83 F, or 256.85 - 279.85 C. The flash point is the temperature at which a flammable liquid vaporizes and is therefore able to ignite. Gasoline has a flash point of about 228.15 K, (-49 F, or -45 °C).
Heat is the transfer of kinetic energy from one medium or object to another, or from an energy source to a medium or object. This is the amount of heat required to raise the temperature of one pound of pure liquid water by one degree Fahrenheit.
Temperatures on the continent range on average from 14 degrees Fahrenheit (minus 10 degrees Celsius) on the Antarctic coast, to minus 76 degrees Fahrenheit (minus 60 degrees Celsius) at higher elevations of the interior, the meteorological organization said.
Summary: On the absolute temperature scale, which is used by physicists and is also called the Kelvin scale, it is not possible to go below zero – at least not in the sense of getting colder than zero kelvin. At zero kelvin (minus 273 degrees Celsius) the particles stop moving and all disorder disappears.
But even if you take the conventional view of the flow of time, motion does not stop at absolute zero. For example helium remains fluid at absolute zero because its zero point energy is too great to allow it to crystallise. So there is no sense in which time stops as we lower the temperature to absolute zero.
And yes there is absolute hot and it is expalined in terms of plank temperature . This maximum temperature is believed to be 1.416833(85) x 10 ^32 Kelvin degrees, and at temperatures above it, the laws of physics just cease to exist.
Very low temperatures
Absolute zero cannot be achieved, although it is possible to reach temperatures close to it through the use of cryocoolers, dilution refrigerators, and nuclear adiabatic demagnetization. The use of laser cooling has produced temperatures less than a billionth of a kelvin.Most people are pretty familiar with absolute zero, it's -273.15 degrees Celsius (-459.67 degrees Fahrenheit), and it's the lowest possible temperature that can ever be achieved, according to the laws of physics as we know them.
If atoms come to a complete stop, they are at absolute zero. Space is just above that, at an average temperature of 2.7 Kelvin (about minus 455 degrees Fahrenheit).
The reason absolute zero (0 kelvin or −273.15°C) is an impossible goal is that the work needed to remove heat from a gas increases the colder you get, and an infinite amount of work would be needed to cool something to absolute zero.
A system with a truly negative temperature on the Kelvin scale is hotter than any system with a positive temperature. If a negative-temperature system and a positive-temperature system come in contact, heat will flow from the negative- to the positive-temperature system.
But conventionally, in reference to temperatures, "negative" doesn't get used. I also speak Swedish, and in that language it's the same - "minus" is always used for weather and temperature, never "negative". "Negative 10 degrees" is just as easy to understand as "minus 10 degrees".
Vostok Station, Antarctica
The South Pole is, of course, a forebodingly frigid place. It currently holds the record low air temperature of minus 128.5 degrees Fahrenheit, recorded at Russia's Vostok Station in 1983.A temperature below absolute zero: Atoms at negative absolute temperature are the hottest systems in the world. Thus, nothing can be colder than absolute zero on the Kelvin scale. Physicists have now created an atomic gas in the laboratory that nonetheless has negative Kelvin values.
Why Does the U.S. Use Fahrenheit Instead of Celsius? That's because virtually every other country in the rest of the world uses the Celsius temperature scale, part of the metric system, which denotes the temperature at which water freezes as 0 degrees, and the temperature at which it boils as 100 degrees.
That is, subtracting a negative is the same as adding a positive. For whatever reason, it seems helpful to use the terms "plus" and "minus" instead, of "add, "subtract", "positive", and "negative". So, for instance, instead of saying "subtracting a negative", you'd say "minus-ing a minus".
It is set so that pure water freezes at zero degrees Celsius and boils at one hundred degrees Celsius. And with 100 degrees between those points, we can specify temperatures using 1 or 2 digit positive numbers. When the temperature is negative, i.e. below 0 °C, then we know that it is so cold that water will freeze.
In Fahrenheit, zero has no particular significance, but it is not uncommon to say sub-zero temperatures to emphasize the coldness (0°F is about -17.78°C). In some fields of physics, a "subzero temperature" may even mean a temperature below 0 Kelvin, see e.g. the Wikipedia article on negative temperatures.
Why Kelvin Doesn't Have Degrees
Kelvin is different because it's an absolute scale. 0K is absolute zero — the point at which gas molecules have no thermal energy. There's no negative temperature on the Kelvin temperature scale. Temperature is a measure of the amount of energy contained by molecules.
