The New Encyclopædia Britannica in 30 Volumes: Macropædia : Knowledge in Depth. - 19 Bd, Volumes 1-19Encyclopædia Britannica, 1974 |
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Page 395
... mass of a system M of particles Em = mı + m2 + ... is denoted by M ; then a quantity # may be defined such that M times ñ is M dx di equal to a sum of products of the mass of each particle Ση dt dt times its x - coordinate ( see 25 ) ...
... mass of a system M of particles Em = mı + m2 + ... is denoted by M ; then a quantity # may be defined such that M times ñ is M dx di equal to a sum of products of the mass of each particle Ση dt dt times its x - coordinate ( see 25 ) ...
Page 427
... mass disappears ; and two space - time . uncharged photons are created with the same total energy The second postulate of relativity theory , the covari- and fly off in opposite directions , thereby conserving ance of the laws of ...
... mass disappears ; and two space - time . uncharged photons are created with the same total energy The second postulate of relativity theory , the covari- and fly off in opposite directions , thereby conserving ance of the laws of ...
Page 580
... mass none known unknown ; traces of helium and neon probably present Satellites Atmosphere Pluto's brightness at the Mount Wilson Observatory , Pas- mass of 0.17 of the Earth's mass . As this value of diameter adena , California , found ...
... mass none known unknown ; traces of helium and neon probably present Satellites Atmosphere Pluto's brightness at the Mount Wilson Observatory , Pas- mass of 0.17 of the Earth's mass . As this value of diameter adena , California , found ...
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