"the Planck constant" . . "Planck\u2013Einstein law" . . . . . . . . . . . "molar Planck constant" . "Planck's relation" . "hypothesis" . . . . "Planck's constant" . . . . "Planck constant#Reduced%20Planck%20constant" . . . "''reduced'' Planck constant" . . . . . . . "Reduced Planck constant" . . . . . . "reduced Planck's constant" . "Planck constant" . "reduced Planck constant." . . . . . "h" . . . . . . . "Planck constant#Reduced Planck constant" . "''\u0127'' = ''h''/(2\u03C0)" . . "constant" . . "Dirac constant" . . . . "\u210E" . . . "Energy/frequency" . . . . "eponymous" . . "Planck constant" . "reduced Planck constant" . . "''h''" . . . . . "\u0127" . "planck constant" . . "reduced Planck constant ''\u0127''" . . "Planck's reduced constant" . "quantum of action" . . . . . .