Search the dictionary A Chinese word or character, or English Draw a character Search 3 entries. pǔlǎngkè 普朗克 Max Planck (1858-1947), German physicist pǔlǎngkèchángshù 普朗克常数 Planck's constant h, approximately 6.626 x 10⁻³⁴ joule.seconds pǔlǎngkèchángshù 普朗克常數 Planck's constant h, approximately 6.626 x 10⁻³⁴ joule.seconds