Optical sensors are a broad class of device for detecting light intensity. This can be just a simple component for notifying when ambient light levels rise above or fall below a prescribed level ...

By analyzing seismic waves from earthquakes from the 1960s, researchers from Peking University deduced that the Earth's inner core has experienced a b ...

The eerie silence, abandoned Ferris wheel, and radiation-hot zones create a post-apocalyptic chill. Holding the remains of over six million people, these 18th-century ossuaries were created to ...

Fibre optics and optical communications is the use of thin strands of glass for sending information encoded into light over long distances. Total internal reflection prevents light inserted into ...

**NM signifies a non meaningful value. A dash signifies the data is not available.