1, Another scale employing absolute zero as its lowest point is the Rankine scale, in which each degree of temperature is equivalent to one degree on the Fahrenheit scale.

2, Democritus formulated a concept that guiding physics at various times ever since- the search for the basic building blocks of the universe and the forces that determine their behavior.

3, Einstein's genius, characterized equally by logical clarity and creative imagination, succeeded in remolding and widening the imposing edifice whose foundations had been laid by Newton's great work.

4, Field (physics) is the area surrounding an object, in which a gravitational or electromagnetic force is exerted on other objects.

5, Galileo's astronomical discoveries and his work in mechanics foreshadowed the work of the 17th-century English mathematician and physicist Sir Isaac Newton, one of the greatest scientists ever living.

6, German astronomer Johannes Kepler, born in 1571, is a key figure in the history of physics.

7, In the next millennium, physicists may achieve a single overarching theory explaining how the four fundamental forces in the universe can be unified.