Microscopic particle of dust, smoke or salt that allows for condensation of water vapor to water droplets in the atmosphere. Nucleus for the formation of a rain drop. Condensation normally occurs on t [..]

Small particles in the atmosphere that serve as the core of tiny condensing cloud droplets. These may be dust, salt, or other material.

Tiny particles invisible to the human eye, such as dust, dirt, and pollutants, that provide surfaces on which water molecules can condense and gather into water droplets.

Tiny particles such as tiny dust, smoke, soot, and salt crystals that are suspended in the air on which water condenses condensation point the temperature at which a gas or vapor changes back to a liq [..]

Liquid or solid particles, such as those in smoke or dust, that provide a surface upon which water vapour can condense into cloud droplets or form ice crystals.

Small particles in the air onto which water vapour condenses.

Small particles in the air on which water vapor condenses or sublimates.

A particle upon which condensation of water vapour occurs. It may be either in a solid or liquid state.

Small particles in the air

A particle upon which condensation of water vapor occurs. It may be either in a solid or liquid state.

A particle upon which condensation of water vapor occurs. It may be either in a solid or liquid state.

A particle upon which condensation

A particle upon which condensation of water vapor occurs. It may be either in a solid or liquid state.