Glossary
Defined terms
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P
P
Pelton turbine
High-head impulse water turbine.
P
Penstock
Pipe that carries water to a turbine.
P
Photovoltaic cell
Semiconductor device that converts light to electricity.
P
Photovoltaic effect
Generation of voltage from light in a junction.
P
Plasma
Ionized gas of charged particles.
P
Plutonium
Human-made actinide used in some fuels.
P
Poloidal field
Magnetic field the short way around a torus.
P
Pressure vessel
Steel vessel that holds a light-water reactor core.
P
Pressurized Water Reactor
Light-water reactor with a secondary steam circuit.
P
Proton
Positively charged nucleon.
P
Pumped storage
Hydroelectric energy storage using two reservoirs.