5 TIPS ABOUT ATOMIC CLOCK PEN YOU CAN USE TODAY

But in case you devote about $2 to $3 to acquire a superior pen, your handwriting can be extra eye-catching—And perhaps extra readable—because of the darker and improved-flowing ink. by Optica Researchers have formulated an optical atomic clock that works by using a frequency comb to straight excite a two-photon transition in rubidium-87 atoms