One of the new divisions was the Solid State Physics group. Kelly suspected that solid state science might provide a new kind of amplifier to replace the vacuum tube in AT&T's phone system.

The particles of a solid are very close together. It melts when it changes from the solid state to the liquid state. The same mass of liquid will have slightly greater volume than the solid.

Ranch dressing is actually a fifth state of matter known as soft matter. Soft matter can have properties of both liquids and ...