普朗克 Pǔlǎngkè Max Planck Origin Definitions Defs Strokes Stroke Words Sentences Sents 马克斯·普朗克 Mǎkèsī· Pǔlǎngkè Max Planck Max Planck (1858-1947), German physicist who first postulated quantization of energy普朗克常数 Pǔlǎngkèchángshù Planck's constant (physics) Planck's constant h, approximately 6.626 x 10⁻³⁴ joule-seconds