ClipArt ETC
"Let P be a piston, fitted, air-tight, to the cylinder AB. As the piston is driven down, the air, unable to escape, is compressed; as it is drawn back, the air expands." —Quackenbos 1859

Compressibility of Air

"Let P be a piston, fitted, air-tight, to the cylinder AB. As the piston is driven down, the air, unable…

An illustration of expanded metal.

Expanded Metal

An illustration of expanded metal.

"As temperature elevates, the metal bar being tested expands accordingly and the dial measures the expansive power per degree of heat." —Quackenbos 1859

Pyrometer

"As temperature elevates, the metal bar being tested expands accordingly and the dial measures the expansive…