Hot Swappable: This refers to a device that is designed to be removed or replaced while a system is turned on without disturbing the computers function. A good example of a hot swappable device is the USB flash drive.

 

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Hot Swappable: This refers to a device that is designed to be removed or replaced while a system is turned on without disturbing the computers function. A good example of a hot swappable device is the USB . . . View Full Definition

Photosynthate: A substance synthesized in the process of photosynthesis

Photosphere: The intensely bright portion of the sun visible to the unaided eye; the 'surface' of the sun. Reaching temperatures estimated at about 11,000°F, it is the portion of the sun's atmosphere wh . . . View Full Definition

Photosynthesis: The process by which plant cells use solar energy to produce ATP. The conversion of unusable sunlight energy into usable chemical energy, associated with the actions of chlorophyll.

Photosynthetic Quotient: In photosynthesis, the moles of oxygen produced, divided by the moles of carbon dioxide assimilated

Photorespiration: Enhanced respiration of plants in the light relative to dark respiration

Photon: A discrete packet of energy associated with electromagnetic radiation. Each photon carries energy E proportional to the frequency nu of the radiation: E = hnu, where h is Planck's constant.

Photolithography: Lithographic printing process using an image formed by photographic means.

Photometer: Any of a number of atmospheric phenomena which appear as luminous patterns in the sky. They do not directly cause adverse weather. They include halos, coronas. rainbows, and fogbows.

Photomicrography: System of producing larger than life photographs by attaching a camera to a microscope.