A combination of technological developments and market forces is undermining the trust between viewer and filmmaker. What’s at stake is history itself. Critic’s Notebook A combination of technological ...

NASA research mathematician Katherine Johnson is photographed at her desk at Langley Research Center in 1966. Johnson made critical technical contributions during her career of 33 years, which ...

A computer that processes analog data is known as an analog computer. Analog computers store information in physical quantities in a continuous format and use measurements to perform computation.