planaria
— Navneord
– Engelsk
~ free-swimming mostly freshwater flatworms; popular in laboratory studies for the ability to regenerate lost parts
planarian
— Navneord
– Engelsk
~ free-swimming mostly freshwater flatworms; popular in laboratory studies for the ability to regenerate lost parts
planation
— Navneord
– Engelsk
~ the process of erosion whereby a level surface is produced
planche
— Navneord
– Dansk
~ billede, figur el. anden illustration som fx finde ...
planchet
— Navneord
– Engelsk
~ a flat metal disk ready for stamping as a coin
planchette
— Navneord
– Engelsk
~ a triangular board supported on casters; when lightly touched with the fingertips it is supposed to spell out supernatural (or unconscious) messages
Planck
— Navneord
– Engelsk
~ German physicist whose explanation of blackbody radiation in the context of quantized energy emissions initiated quantum theory (1858-1947)
Planck's law
— Navneord
– Engelsk
~ (physics) the basis of quantum theory; the energy of electromagnetic waves is contained in indivisible quanta that have to be radiated or absorbed as a whole; the magnitude is proportional to frequency where the constant of proportionality is given by Planck's constant
Planck's constant
— Navneord
– Engelsk
~ the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second
plane
— Navneord
– Engelsk
~ an aircraft that has a fixed wing and is powered by propellers or jets; "the flight was delayed due to trouble with the airplane"
plane
— Navneord
– Engelsk
~ (mathematics) an unbounded two-dimensional shape; "we will refer to the plane of the graph as the X-Y plane"; "any line joining two points on a plane lies wholly on that plane"
plane geometry
— Navneord
– Engelsk
~ the geometry of 2-dimensional figures