plural of hot shift

(astronomy) Light spectra shifted towards red, as by elongation of light waves from a source moving away from the detector.

(quantum mechanics, quantum electrodynamics) A small difference between the energy levels 2S_½ and 2P_½ of the hydrogen atom, not predicted by the Dirac equation, whose detection in the Lamb–Retherford experiment of 1947 foreshadowed the development of quantum electrodynamics (in which the discrepancy is explained to be an effect of the emission and re-absorption of virtual photons); such a difference between otherwise expectedly equal energy levels of hydrogen or any other type of atom.

plural of swing shift

plural of day shift

(photography, chiefly attributive) The use of camera movements to simulate a miniature scene in the resulting photograph.

plural of work shift

A shift (change of workers).

simple past tense and past participle of make shift

present participle of make shift