| PL | a flat metal disk ready for stamping as a coin |
|---|---|
| PL | a triangular board supported on casters |
| PL | German physicist whose explanation of blackbody radiation in the context of quantized energy emissions initiated quantum theory (1858-1947) |
| PL | the constant of proportionality relating the energy of a photon to its frequency |
| PL | (physics) the basis of quantum theory |
| PL | (physics) an equation that expresses the distribution of energy in the radiated spectrum of an ideal black body |
| PL | an aircraft that has a fixed wing and is powered by propellers or jets |
| PL | a carpenter's hand tool with an adjustable blade for smoothing or shaping wood |
| PL | a power tool for smoothing or shaping wood |
| PL | (mathematics) an unbounded two-dimensional shape |
| PL | a level of existence or development |
| PL | cut slices from |