Yes.john t said:Is it basically a change in angular velocity at a given mass?
Rotational transitions are changes in the rotational energy levels of a molecule, typically caused by the absorption or emission of a photon of electromagnetic radiation.
Rotational transitions occur when a molecule absorbs or emits a photon that corresponds to the energy difference between two rotational levels. This can happen through collisions with other molecules or through exposure to electromagnetic radiation.
Rotational transitions provide important information about the structure and properties of molecules. By studying the frequencies and intensities of rotational transitions, scientists can determine the rotational constants and moments of inertia of a molecule, which can help in identifying the molecule and its properties.
Rotational transitions can be observed through spectroscopy techniques such as microwave spectroscopy or infrared spectroscopy. These techniques measure the absorption or emission of radiation by a molecule, which can then be used to determine the rotational transitions.
The energy levels and frequencies of rotational transitions are affected by factors such as the mass, shape, and chemical bonds of a molecule. Temperature and external magnetic fields can also influence rotational transitions.