Thermodynamics
Order tends to disorder
What is Entropy?
Electric potential energy
The energy a charge has due to its location in an electric field
An object that absorbs all incoming radiation
Any device that changes internal energy into mechanical work
What is a Heat Engine?
Something that causes an electric potential difference, which drive a current through the circuit
What is a Voltage Source?
A mateiral property measuring how good of an emitter or absorber a surface is
What is Emissivity?
The ideal maximum percentage of input energy that can be converted into work
What is Carnot Efficiency?
Electric potential
Electric potential energy per charge (at that point due to the electric field)
the proportion of the incident light or radiation that is reflected by a surface
What is Albedo?
This law is often expressed as ΔU = q + w.
The voltage across a conductor is directly proportional to the current flowing through it, and inversely proportional to the resistance
What is Ohm's law?
The Power of a black body radiator
What is Luminosity?
What are the functions of the hot and cold reservoirs in heat engines?
The hot reservoir provides the initial heat energy that drives the engine's operation, while the cold reservoir acts as a heat sink for the waste energy. They are both required because the second law of thermodynamics dictates that not all heat energy can be converted into work.
In parallel, it is half the value of either resistor. In series, it is the sum of the resistances
What is Equivalent Resistance?
states that the total radiant heat power emitted from a surface is proportional to the fourth power of its absolute temperatur
What is the Stefan-Boltzmann law?