Einstein also had a unique way of viewing the universe. He did not see open space as empty space. He wrote, "Physical objects are not in space, but these objects are spatially extended (as fields). In this way the concept 'empty space' loses its meaning" (Einstein qtd. On Space and Motion). He thought the physical reality of space was simply a representation of different coordinates of space and time.

Part of Einstein's radical thinking was the notion that distance and time are not absolute. He could look at the clock and sense that the rate of that ticking clock depended on the "motion of the observer of that clock" (Lightman). In addition to this, Einstein's ideas posited that gravity pulling one object in one direction is equal to a force accelerating in the opposite direction. Lightman helps us understand this notion with the image of an "elevator accelerating upwards feels...
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