Constant (Planck)
![M.K.E.L. Planck](/education/courses/other-education/radiation-protection/a-z/a-z-pictures/pic-planck.jpg)
The unit kilogram (kg) is defined by fixing Planck's constant h to be equal to 6.626,070,15×10-34 J·s (= kg·m2 ·s-1 ), where second and meter are defined in terms of atomic clock and speed of light.
The constant is named after the German physicist Max Karl Ernst Ludwig Planck (1858 – 1947).
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Last modified: | 07 April 2024 7.19 p.m. |
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