Encyclopedia of Physical Science and Technology, Volume 15

analog analysis analytic set Apollo applications average bond graph cell circuit clusters coefficient components defined density developed devices domain earth earthquake electric field electrons energy engineering entropy equation equilibrium extraction filter flight flow Fourier transform frequency function Gibbs entropy given heat integral ionosphere ions linear magnetic field magnetosphere main sequence mass measure ment mesocyclone method mission moon motion observed operator orbit parameters particles phase physical planet plasma prediction pressure problem produced propellant quantizer quantum radar radiation region result Salyut sample satellite seismic seismic waves seismographs seismology shown in Fig shuttle simulation sintering Skylab soil solar wind solid solution solvent Soyuz space spacecraft spaceflight speech SS Challenger SS Discovery stars structure sunspot surface techniques temperature thermal thermodynamic thyristor tion USA SS variable vector velocity voltage waves