The Mysterious Universe

actual already amount appears atoms become bodies called cause century charged concept conservation conservation of mass consists continually continuum course creation definite describe determinism dimensions direction discuss distance earth effect electricity electrons energy equal ether exactly exist experiment explain fact fall forces gravitation greater imagine instance interpret kind knowledge known laws length less light living mass material mathematical matter mean measured mechanical merely miles millions mind minute motion moving nature nebulae Newton objects observed ordinary particles pass phenomena photons physics picture possible precisely present principle probability produce properties proved pure radiation reality regarded relativity represent rest result round seems shadows shews similar single space speed stars suggested supposed surface system of waves theory things thought true universe waves weight whole