Sunspots are the most striking phenomenon of the solar magnetic field. After the invention of the telescope early in the 17th ...

The space agency took advantage of an optical phenomenon to gain new insights into the wind and waves of Peru's Lake Titicaca ...

Even if Earth does survive, it won’t be pretty. The temperature of our planet will be about 1,300 degrees C, hot enough to ...

Sun safety for the entire family Everybody needs some sun exposure to produce vitamin D (which helps calcium absorption for stronger and healthier bones). But unprotected exposure to the sun's ...

Continuous wave coherent light sources have been developed primarily intended for metrology tools in advanced semiconductor manufacturing. 5 W at 266 nm, 150 mW at 213 nm, and 120 mW at 198.5 nm have ...

A simple expression for the noise in the photocurrent generated by the detection of light from an ideal superluminescent source is derived using a quantum amplifier model. The excess noise factor X is ...