Used with why or when

• when: Named for the smelly, oily fluids they emit when alarmed.

Object

• ton: In 1990 the UK emitted 212 million tons of carbon dioxide.

• photon: What causes an excited atom or molecule to emit a photon?

• pollutant: Not only do they use less gas, tho, they also emit fewer pollutants into the air.

• fume: We might emit some noxious fumes into the atmosphere by driving there, or leave a slight residue on a site.

Adjective complement

• infrared: Again, cloud tops are usually cooler and emit less infrared upwards than the surface, while cloud bottoms radiate some infrared back down.

• less: More than 50 Southern countries, including India, emit less than half the maximum level ( 0.2 tons per person ).

Preposition: at

• wavelength: It also shows that the black body emits at a peak wavelength, at which most of the radiant energy is emitted.

Preposition: from

• exhaust: Lead compounds are emitted from the exhausts of vehicles using leaded gasoline.

• premise: Common law claims in nuisance can relate to environmental matters, for example noise from machines and smells and dust emitted from premises.

Preposition: by

• atom: We can detect these small motions by looking at the Doppler shift in spectral lines emitted by atoms in the solar surface.

• earth: At this position MAP will not be significantly affected by the radiation emitted by the Earth itself.