white light

Images captured by NASA's Mars Curiosity probe show a mysterious white light trail that cannot be explained on Red Planet.

Soap plays an extremely important role in our lives. They are used in many forms - bath soaps, shampoos, hand washes ... and have a multitude of different colors.

The survey showed that a series of electroencephalic impulses arose in mice right after death, leading scientists to hypothesize that the near-death experience is very lively at

Each color corresponds to 1 wavelength, frequency and carries different energy. Purple light has the shortest wavelength in the visible spectrum.

Once upon a time, incandescent bulbs were no longer used in everyday life, on the grounds that they were extremely wasteful of electricity.