Items

• pivot

  A shaft or pin on which something turns
• plane

  A surface in which if any two points are chosen a straight line joining them lies wholly in that surface
• plasma

  An electrically conducting medium in which there are roughly equal numbers of positively and negatively charged particles.
• plasmasphere

  A torus-shaped region in the inner magnetosphere that contains a dense and cold plasma.
• plastic

  Any of numerous organic synthetic or processed materials that are mostly thermoplastic or thermosetting polymers of high molecular weight and that can be made into objects, films, or filaments
• point

  A particular place
• polarisation

  The action or process of affecting radiation and especially light so that the vibrations of the wave assume a definite form
• pole

  The fixed point in a system of polar coordinates that serves as the origin
• polyatomic

  Containing more than one and especially more than two atoms
• position

  The point or area occupied by a physical object
• positive

  Real and numerically greater than zero; Having higher electric potential and constituting the part from which the current flows to the external circuit
• positron

  A positively charged particle having the same mass and magnitude of charge as the electron and constituting the antiparticle of the electron
• potential

  The work required to move a unit positive charge from a reference point (as at infinity) to a point in question.
• potential energy

  The stored energy in an object due to its position, properties, and forces acting on it.
• power (rate of energy transfer)

  The time rate at which work is done or energy emitted or transferred.
• precision

  The degree of refinement with which an operation is performed or a measurement stated
• prediction

  A statement/theory that foretells on the basis of observation, experience, or scientific reason
• prefix

  An affix attached to the beginning of a word, base, or phrase and serving to produce a derivative word or an inflectional form
• pressure

  The application of force to something by something else in direct contact with it.
• prime

  Having no polynomial factors other than itself and no monomial factors other than 1.
• principle

  A comprehensive and fundamental law, doctrine, or assumption.
• prism

  A transparent body that is bounded in part by two nonparallel plane faces and is used to refract or disperse a beam of light.
• probability

  The chance that a given event will occur.
• process

  A natural phenomenon marked by gradual changes that lead toward a particular result.
• product

  The number or expression resulting from the multiplication together of two or more numbers or expressions.