Inverse Square Law of Flux The moment the light leaves the surface of the star, it begins to spread out uniformly through a spherical shell Light sources which are further away appear fainter becau...
Wien's Law Wien’s displacement law relates the observed wavelength of light from an object to its surface temperature, it states: The black body radiation curve for different temperatures peaks at ...
Stefan-Boltzmann Law An objects luminosity depends on two factors: Its surface temperature Its surface area The relationship between these is known as the Stefan-Boltzmann Law, which states:...
Black Body Radiation Black body radiation is the name given to the thermal radiation emitted by all bodies (objects) All objects, no matter what temperature, emit black body radiation in the form o...
Average Molecular Kinetic Energy An important property of molecules in a gas is their average kinetic energy This can be deduced from the ideal gas equations relating pressure, volume, temperature ...
Investigating Gas Pressure and Volume Boyle's Law relates pressure and volume at constant temperature This investigation is one valid example of how this required practical might be tackled, others...
Ideal Gas Equation When calculating for gases, assume that the gas is an ideal gas The three gas laws (explained below) can be combined to create one equation in terms of pressure, volume, temperat...
Kinetic Theory of Gases Equation Gases consist of atoms or molecules randomly moving around at high speeds The kinetic theory of gases models the thermodynamic behaviour of gases by linking the mic...
Absolute Zero On the thermodynamic (Kelvin) temperature scale, absolute zero is defined as: The lowest temperature possible. Equal to 0 K or -273.15 °C It is not possible to have a temperature lowe...
