"national physical laboratory" - related articles and key terms

Related terms: bipm   trap   epoch   clocks   turing   caesium   clock   si second   stable   atomic   time scale   atomic time   realisation   optical   signal   atomic clock   microwave   accuracy   atomic clocks   defined   coordinate time   transition   system of units   frequency   turing machine   laboratory   standard   electronic   national institute of standards   institute of standards and technology

Wikipedia sources: Second   Alan Turing   Metrology   Atomic clock   Time dilation   Von Neumann architecture   History of the Internet   International Atomic Time

Context for words: national   physical   laboratory