Terms starting with Q

Producing short, intense laser pulses by holding cavity losses high while energy builds up, then suddenly dropping them.

Quench and temper: hardening steel by quenching, then tempering it back to a set strength and toughness.

Quality control and quality assurance: contractor testing to run production and agency testing to verify it.

Phase matching by periodically flipping a crystal's nonlinear orientation instead of relying on birefringence.

To cool hot metal rapidly in a liquid or gas so that it hardens, or the act of doing so.

Stream of cooled, conditioned air that solidifies filaments just below the spinneret in spunbond and fiber spinning.

The hardening heat treatment behind strength-grade bolts: heat, quench rapidly, then reheat to toughen.

A crack that forms during or soon after quenching from thermal and transformation stress in hardened steel.

How fast a quenchant pulls heat out of steel, usually rated by the Grossmann H value.

The liquid or gas used to quench parts, chosen for its cooling speed and the distortion it produces.

Loss of optical brightener response caused by chemicals or materials that suppress its fluorescence.

Expedited board fabrication or assembly delivered in days instead of weeks, at a premium price. Shop talk