the temperture in which all motion of particles stop
-273.15 Degrees Celcius
0 degrees Kelvin
0 degrees Kelvin
I know I am picky but I try to use the correct upper/lower case letters and units. It should be
0 kelvin or 0 K
the unit has a lower case letter, the symbol is upper case. In addition there is no degree sign; this is because the scale has a natural zero whereas the deg F and deg C scales do not.
The temperature at which all motion of particles comes to a complete stop is known as absolute zero. Absolute zero is defined as 0 Kelvin (K) on the Kelvin temperature scale, which is equivalent to -273.15 degrees Celsius (°C) or -459.67 degrees Fahrenheit (°F). At absolute zero, particles have no thermal energy remaining, resulting in the cessation of all motion.
To understand how scientists have determined the temperature of absolute zero, we need to delve into the concept of temperature scales. The Celsius scale, also known as the centigrade scale, is based on the freezing and boiling points of water. On this scale, water freezes at 0°C and boils at 100°C at standard atmospheric pressure.
However, the Celsius scale was not suitable for scientific purposes that required an absolute reference point. Therefore, Lord Kelvin developed the Kelvin scale, which starts from absolute zero. In the Kelvin scale, the temperature difference between two points is the same as in Celsius, but absolute zero is the starting point.
To conceptualize how scientists approach absolute zero, they study the behavior of gases under varying temperature and pressure conditions. According to the kinetic theory of gases, the temperature of a gas is directly proportional to the average kinetic energy of its particles. Kinetic energy is the energy of motion possessed by particles.
As the temperature decreases, the kinetic energy decreases, and the gas particles slow down. When reaching absolute zero, the particles no longer possess kinetic energy, and thus, their motion ceases entirely.
Although scientists have not yet achieved absolute zero experimentally, they have come extremely close. By using advanced refrigeration techniques, researchers have reached temperatures within a few billionths of a degree above absolute zero. This achievement has allowed scientists to explore fascinating phenomena associated with ultra-cold temperatures and observe unique quantum mechanical effects in matter.