Attributes or proportions

Usage examples of dimensions.

The north-south and east-west directions are two independent spatial dimensions in which a car can move.

He proposed that the spatial fabric of the universe might possess more than the three dimensions of common experience.

It is difficult to draw something with that many dimensions, so for visualization purposes we must settle for an illustration incorporating two large dimensions and one small, circular dimension.

Unlike your human eyes, which can swivel around to look in all three dimensions, your eyes as a Linebeing are forever locked into position, each staring off into the one-dimensional distance.

The evolution from one to two observably large space dimensions is dramatic.

We do not know at present whether any of our three spatial dimensions extends outward forever, or in fact curls back on itself in the shape of a giant circle, beyond the range of our most powerful telescopes.

Einstein had formulated general relativity in the familiar setting of a universe with three spatial dimensions and one time dimension.

Gravity is carried by ripples in the familiar three space dimensions, while electromagnetism is carried by ripples involving the new, curled-up dimension.

Einstein and others continued, now and then, to dabble with the possibility of extra curled-up dimensions, but it quickly came to be an enterprise on the outskirts of theoretical physics.

It is no wonder that speculations on extra dimensions took a distant backseat during these productive and heady times.

Beyond proposing a different number of extra dimensions, one can also imagine other shapes for the extra dimensions.

The new equations resulting from the extra dimensions were strikingly reminiscent of those used in the description of electromagnetism, and the strong and the weak forces.

Our inability to probe distances smaller than a billionth of a billionth of a meter permits not only extra tiny dimensions but all manner of whimsical possibilities as well-even a microscopic civilization populated by even tinier green people.

Equivalently, in a universe with three spatial dimensions, a string can vibrate in three independent directions.

Although it gets harder to envision, the pattern continues: In a universe with ever more spatial dimensions, there are ever more independent directions in which it can vibrate.