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Proton

An elementary nuclear particle with a positive electric charge located in the nucleus of an atom.

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proton
Energy; Nuclear energy

An elementary nuclear particle with a positive electric charge located in the nucleus of an atom.

proton
Medical devices; Radiology equipment

A small atomic particle, typically found within an atom's nucleus, that possesses a positive electrical charge. Even though protons and neutrons are about 2,000 times heavier than ...

proton
Weather; Meteorology

A positively charged subatomic particle with a rest mass of 1. 67262 x 10 −27 kg, slightly less than that of the neutron and about 1836 times that of the electron. Atomic nuclei ...

proton
Biology; Cell biology

A subatomic particle in the nucleus of an atom that carries a positive charge. The positively charged (+1) subatomic particle located in the atomic nucleus and having a mass ...

proton
Physics; General physics

A positively charged particle that, along with the neutron, occupies the nucleus of the atom.

proton
Electrical equipment; Fuel cell

The proton is a subatomic particle with an electric charge of one positive fundamental unit.

alpha particle
Energy; Nuclear energy

A positively charged particle ejected spontaneously from the nuclei of some radioactive elements. It is identical to a helium nucleus that has a mass number of 4 and an ...

attenuation
Energy; Nuclear energy

The process by which the number of particles or photons entering a body of matter is reduced by absorption and scattered radiation.

binding energy
Energy; Nuclear energy

The minimum energy required to separate the nucleus of an atom into its component neutrons and protons.

chain reaction
Energy; Nuclear energy

A reaction that initiates its own repetition. In a fission chain reaction, a fissionable nucleus absorbs a neutron and fissions spontaneously, releasing additional neutrons. ...

condenser
Energy; Nuclear energy

A large heat exchanger designed to cool exhaust steam from a turbine below the boiling point so that it can be returned to the heat source as water. In a pressurized-water ...

annual limit on intake (ALI)
Energy; Nuclear energy

As defined in Title 10, Section 20.1003, of the Code of Federal Regulations (10 CFR 20.1003), ALI is the derived limit for the amount of radioactive material taken into the body ...

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