(quantum mechanics) The limit on measurement accuracy at quantum scales due to back-action effects. / (spectroscopy) The shortest wavelength in an X-ray spectrum.

(quantum mechanics) An effect marked by the quantization of the Hall resistance, observed in two-dimensional electron systems subjected to low temperatures and strong magnetic field.

(quantum mechanics) A method for describing a quantum process by probing with known quantum states.

Misspelling of Qantas.

(physics) The coupled interaction between matter and an electromagnetic field within a resonating structure

A long pole for propelling a punt or barge.

(informal) The quark-gluon plasma which existed in the first millionth of a second of the universe.

(physics) Of or pertaining to a quantum. / (physics) Quantized. / (biology) Of a response, being all-or-none.

(physics) A physical property that can be measured or calculated from other physical property and expressed as the product of a numerical value and a physical unit.

The systematic scientific investigation of quantitative properties and phenomena and their relationships, using statistical methods.