| A | B |
|---|
| Amp | ampere; unit ofo current flow |
| B.T.U. | abbr. British Thermal Unit — the amount (quantity) of heat required to raise the temperature of 1 lb. of water by 1◦ Farenheit |
| Conduction | Heat transfer from one molecule to another within a substance or from one substance to another. |
| Convection | Heat transfer from one place to another using a fluid |
| Coulomb | "Coulomb's law: a statement in physics: the force of attraction or repulsion acting along a straight line between two electric charges is directly proportional to the product of the charges and inversely to the square of the distance between them |
| E.M.F. | Electro-motor force — a term often used for voltage indicating the difference of potential in two charges. |
| Electron | The smallest portion of an atom that carries a negative charge and orbits around the nucl;eus of an atom. |
| Heat Index | measurement of the air temperature in relation to the relative humidity, used as an indicator of the perceived temperature |
| Hot Junction | the part of a thermocouple or thermopile where heat is applied. |
| Latent Heat | Heat energy absorbed or rejected when a substance is changing state and there is no change in termperature. |
| Neutron | Neutrons and protrons are located at the center of the nuclelus of an atom. Neutrons have no charge. |
| Ohm | a unit of measurement of electrical resistance |
| Ohm's Law | A law involving elecgrical relationships, discovered by Georg Ohm: E = I x R |
| Proton | The part of an atom having a positive charge. |
| Radiation | Heat transfer; radiant heat |
| Sensible Heat | Heat that causes a change in temperature |
| Specific Heat | the amount of heat required to raise the temperature of 1 lb. of a substance 1degree farenheit. |
| T.X.V. | Thermostatic expansion valve — a valve used in refrigeration systems to control the superheat in an evaporator by measuring the correct refrigerant flow to the evaporator. |
| Valence Electron | single electron or one of two or more electrons in the outer shell of an atom that is responsible for the chemical properties of the atom |
| Volt | a unit of electrical potential or pressure |
| Watt | a unit of electrical power, directly converted to work; the product of voltage and amperage. 746 watts are equal to one horsepower |
| Wind Chill | still-air temperature that would have the same cooling effect on exposed human skin as a given combination of temperature and wind speed |
