UNIT 1 Physics Key Words (BTEC Applied Science Level 3 )

UNIT 1 Physics Key Words (BTEC Applied Science Level 3 ) Oscillation A regular repeating motion about a central value Antinode points of maximum amplitude that occur halfway between each pair of nodes. Stationary Waves wave motions that store energy rather than transferring energy to other locations Radian a unit of angle measure based on arc length Superimpose/superposition the adding together of wave displacements that occur when waves from two or more separate sources overlap at any given location. Refractive Index of a transparent medium is the ratio of speed of light in vacuum to the speed of light in the medium. First Harmonic Pattern of stationary waves on a string when it vibrates at its lowest possible frequency Displacement how far the quantity that is in an oscillation has moved from its mean value at any given time Phase Difference the difference in ph