Description: A motet for Christmas Day from Selectae quaedam cantiones sacrae, Nuremberg, 1571. Published as the pendant second part of the motet Hodie Christus natus est, this edition is offered as an independent piece.
The universe is made up of matter and energy. Matter â anything that has mass and takes up space â is pretty straightforward and easy to grasp, but energy is a bit more abstract. In physics, energy is the ability to do work, or the ability to move or elicit change in matter.
Matterwave Science Advisor. Gold Member. Thermal energy is an equation of state, it is the total energy contained in a system due to the random motions of all of its constituents (in the center of mass frame). Heat is energy in transport, and it is not an equation of state. It is the energy transferred from one system to another that is not done by work.