Wikipedia:List of hoaxes on Wikipedia/Magnesium lasering

Magnesium lasering is the chemical activity of releasing transfrequent flashes of light from a magnesium substance during the processes of overcoming an activation energy barrier. When dissolved in non-reactant liquids during certain chemical reactions, magnesium can be used to produce sources of light, similar to that of a laser beam.

History
The earliest known usage of magnesium lasering was in 1933 when laboratory chemist Dr. Herman Wakefield was experimenting with the chemical element of magnesium at the University of Oxford. By accident, he discovered that after he had added a small quantity of metals to a non-reactant liquid solution, faint blue light could be visible in magnesium particles.