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- Celsius scale
- The zero point on Celsius scale is the melting point of water (0 °C = 273.15 K). The size of one degree on Celsius scale (°C) is same as on the Kelvin scale (K). Conversion between Celsius and Kelvin is achieved using the following relationship
T K = T °C + 273.15
- Charles' law
- According to Charles' the volume of a gas is directly proportional to its temperature at constant pressure. But this law is only empirical and exact only for ideal gases.
p1 |
= |
T1
|
 |
 |
p2 |
T2
|
or
pt = po × (1 + |
t
| ) |
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273 |
- Critical temperature
- Critical temperature is the point on the phase diagram of a two-phase system at which the two coexisting phases have identical properties and therefore represent a single phase. It is not possible to liquefy any substance above its critical temperature.
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