The devices themselves were marvels of instrumentation, but mercury is a hazardous substance, and since 2011 NIST will no longer calibrate mercury thermometers. A typical Pt100 RTD probe Luckily ...

Researchers developed a nanoscale quantum resonant tunnelling diode that mimics a sensory neuron, detecting light, processing ...

RTD ridership barely increased despite efforts to promote public transit, newly released numbers show, raising concerns that continued rail maintenance “slow zones” and security problems are ...