Light consists of individual particles that propagate in waves. The wavelength determines the color and energy of the light.

Trouble started after Paris St Germain beat Inter Milan in the Champions League final on Saturday night, with two people ...

MUMBAI, June 2 (Reuters) - The Indian rupee is likely to kick off the week on a positive note, boosted by stronger-than-expected economic growth data, and, alongside government bonds, will be ...

Which phones defined 25 years of great mobile photography? Here’s my personal list of game-changers, from the Sony K750i to ...