Specific Heat Capacity
Specific heat capacity is the amount of energy needed to raise 1kg of a substance by 1˚C
%%Increasing the internal energy of a body%%
The heater increases the internal energy of the body, and we measure this using a joulemeter.
%%Measuring the body’s temperature%%
Measure the temperature of the body (object) at the start and measure the maximum temperature of the body at the end.
%%Calculating Specific Heat Capacity%%
The heater increases the %%internal%% energy of the body and we measure this using a %%joulemeter.%% Measure the temperature of the body (object) at the start and measure the maximum temperature of the body at the end.
@@thermal capacity = mass × specific heat capacity@@
%%Leslie’s Cube%%
- Leslie's cube is a metal box with 4 different colour sides (black, matte black, white, unpainted).
- If you pour hot water into the cube, the matt (dull) black side will emit more infra-red radiation than the other sides.
- The infra-red radiation emitted is measured using a thermopile (a sensitive thermometer).