(baseball) A defensive alignment in which the third baseman, shortstop and second baseman positionally shift to their left when a left-handed batter is in the batter's box. Used primarily when the batter is an extreme pull hitter.

(physics) The portion of an isotope shift produced by the changing mass of a nucleus upon the addition of a neutron

(physics) The portion of an isotope shift produced by the changing shape of a nucleus upon the addition of a neutron

Regularly scheduled work during daylight hours, especially 8AM to 4PM.

Alternative spelling of shiftwork

(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.

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

(linguistics) A change in one of the meanings of a word over time.

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

Purkinje effect