History | Page 172

acceleration). " In trying to explain ether, it might be thought of as an all pervasive liquid occupying all of space. This liquid concept is useful because a liquid can not be compressed but can only transfer the energy attempting to compress it from one location to another. This is how an automobile's brakes work. The driver pushes in the break pedal when he wants to stop. The plunger of the break pedal attempts to compress fluid in the master cylinder. The master cylinder is connected by metal tubes full of fluid to each wheel. When force is put on the master cylinder by the driver it is transmitted to each of the four wheel cylinders gV