further, this box being, by a rope or other contrivance, suddenly
jerked to one side, which is scientifically termed 'difform motion',
as opposed to 'uniform motion.' The person would then naturally reach
bottom on the opposite side. The result would consequently be the
same as if he obeyed Newton's law of gravitation, while, in fact,
there is no gravitation exerted whatever, which proves that difform
motion will in every case produce the same effects as gravitation.

"I have applied this new idea to every kind of difform motion and
have thus developed mathematical formulas which I am convinced give
more precise results than those based on Newton's theory. Newton's
formulas, however, are such close approximations that it was difficult
to find by observation any obvious disagreement with experience."

Dr. Einstein, it must be remembered, is a physicist and not an
astronomer. He developed his theory as a mathematical formula. The
confirmation of it came from the astronomers. As he himself says, the
crucial test was supplied by the last total solar eclipse. Observations
then proved that the rays of fixed stars, having to pass close to
the sun to reach the earth, were deflected the exact amount demanded
by Einstein's formulas. The deflection was also in the direction
predicted by him.

The question must have occurred to many, what has all this to do with
relativity? When this query was propounded by the Times correspondent
to Dr. Einstein he replied as follows:

"The term relativity refers to time and space. According to Galileo and
Newton, time and space were absolute entities, and the moving systems
of the universe were dependent on this absolute time and space. On