Editing Planck constant
Jump to navigation
Jump to search
The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then publish the changes below to finish undoing the edit.
Latest revision | Your text | ||
Line 1: | Line 1: | ||
The '''Planck constant''' (<math>h</math>), is named after the German physicist [[Max Karl Ernst Ludwig Planck]]. | The '''Planck constant''' (<math>h</math>), is named after the German physicist [[Max Karl Ernst Ludwig Planck]]. | ||
Its value (in SI units, 2006 [http://www.codata.org/ CODATA] | Its value (in SI units, 2006 [http://www.codata.org/ CODATA]) is: | ||
:<math> 6.626 068 96(33)\times 10^{-34 | :<math> 6.626 068 96(33)\times 10^{-34}</math> Js | ||
More recent measurements place a preliminary value at <math> 6.626 070 95(44)\times 10^{-34 | More recent measurements place a preliminary value at <math> 6.626 070 95(44)\times 10^{-34}</math> Js (Ref. 1) | ||
==References== | ==References== | ||
#[http://dx.doi.org/10.1088/0026-1394/44/6/001 I A Robinson and B P Kibble "An initial measurement of Planck's constant using the NPL Mark II watt balance", Metrologia '''44''' pp. 427-440 (2007)] | #[http://dx.doi.org/10.1088/0026-1394/44/6/001 I A Robinson and B P Kibble "An initial measurement of Planck's constant using the NPL Mark II watt balance", Metrologia '''44''' pp. 427-440 (2007)] | ||
[[Category: Physical constants]] | [[Category: Physical constants]] |