lämpötihevyyttä

Lämpötiheys, known in English as heat capacity, is a fundamental physical property of a substance that describes the amount of heat energy required to raise its temperature by one degree Celsius or Kelvin. It is an extensive property, meaning it depends on the mass of the substance. A larger mass of a substance will generally have a higher heat capacity than a smaller mass.

The unit for heat capacity is typically Joules per Kelvin (J/K) or Joules per degree Celsius (J/°C). The formula for heat capacity (C) is given by Q/ΔT, where Q is the amount of heat added to the substance and ΔT is the resulting change in temperature. This concept is crucial in thermodynamics and is applied in various fields, including engineering, chemistry, and meteorology, to understand how different materials respond to heat.

While heat capacity refers to a specific amount of a substance, specific heat capacity, often denoted by a lowercase 'c', is an intensive property. Specific heat capacity is the amount of heat energy required to raise the temperature of one unit of mass (usually one kilogram or one gram) of a substance by one degree Celsius or Kelvin. Its unit is Joules per kilogram per Kelvin (J/(kg·K)) or Joules per gram per degree Celsius (J/(g·°C)). Water, for instance, has a relatively high specific heat capacity, which is why it is effective in cooling systems and plays a significant role in regulating Earth's climate. Understanding heat capacity is essential for calculating heat transfer and predicting temperature changes in various systems.