Hartree's Constant

 Douglas Hartree (who designed Hartree's Differential Analyzer) is also responsible for Hartree's Law

 

lHartree’s Law

 

–The time to completion of any project, as estimated by the project leader, is a constant (Hartree’s constant) regardless of the state of the project

–eg. A project is 90% complete 90% of the time

The classic example of a Hartree Constant is Fusion power, which is always a decade away from generating excess power.