James Prescott Joule

The heat produced by the electric current is independent of the material of the battery.

The heat produced by the electric current is independent of the temperature of the battery.

The heat produced by the electric current is independent of the form of the battery.

The heat produced by the electric current is independent of the surrounding medium of the battery.

The heat produced by the electric current is independent of the pressure of the surrounding medium of the battery.

The heat produced by the electric current is independent of the motion of the battery.

The heat produced by the electric current is independent of the magnetic state of the battery.

The heat produced by the electric current is independent of the nature of the electrolyte in the battery.

The heat produced by the electric current is independent of the size of the cells in the battery.

The quantity of heat produced by the friction of bodies, whether solid or liquid, is proportional to the work done.

It is evident that the motive power of heat engines cannot be increased without limit.

The government of the world is perfect, and the laws of nature are immutable.

Believing that the power to destroy belongs to the Creator alone, I fully adhere to the British Government's policy of never employing the agency of fire in any military operations.

We might reason a priori that the world was made expressly for the benefit of the senses.

The production of heat by electricity is as much a matter of science as the production of light or sound.

In all cases where work is done, an exact equivalent of heat is produced.

The earth in its course round the sun is never subjected to the action of a force which is not directed towards the sun.

My object has been to determine the numerical relation between heat and motive power.

Nature is the source of all true knowledge.

The phenomena of nature are to be observed and studied.