Issues

How do you hold a moonbeam in your hand? Two research groups at Harvard have found the answer.

The molecular workings of photosynthesis, vision, and other light-driven processes can now be studied on the time scales on which they occur.

Federal science spending is on an upward trajectory and should track overall economic growth, Lane says.

By minimizing electromagnetic, mechanical, and other disturbances, physicists in Dresden, Germany, aim to perfect electron holography and popularize its use in semiconductor, superconductor, and other materials studies.

The best values of the fundamental constants can rarely be determined by a direct measurement. Instead, they are usually found at the end of a chain of experimental observations and theoretical relationships.

The latest clocks use a single ion to measure time with an anticipated precision of one part in 10¹⁸.

When atoms and molecules were still quite hypothetical, Loschmidt used kinetic theory to get the first reasonable estimate of molecular size.