Modern Science: A Study of Physical Science in the World Today

acceleration airship amount appear applied atomic weight atoms behaviour body centre chemical circle corresponding course decimal direction distance Earth effect electrical electrons elements equal equation Euclidean geometry example existence experimental expressed fact field filament fluid force friction geometry gravitational Helium Hot cathode illustration impact increase infinite isolated kinetic energy lamp length lifting force light machine mass material mathematical matter means measure mechanical mercury-vapour lamps method molecules movement moving nature Newton Newton's Second Law object particles pass physical planets position possible potential energy practice principle problem produced properties qualities radiant energy radiation recurring decimal regularity relative right angles rotation scientific seen sense side simple situation social space speed speed of light stable stage statistical straight line suppose surface symbols temperature theory theory of relativity tion transformed triangle tungsten unit wave