A glow stick is a single-use translucent plastic tube containing isolated substances which when combined make light through a chemical reaction-induced chemoluminescence which does not require an electrical power source. Millions of glow sticks are sold annually. Cyalume was invented by Michael M.

Rauhut, David Iba Sr, Robert W. Sombathy and Laszlo J. Bollyky of American Cyanamid, based on work by Edwin A.

Chandross of Bell Labs in conjunction with Richard D. Sokolowski of Eh.M Labs. Other early work on chemoluminescence was carried out at the same time, by researchers under Herbert Richter at China Lake Naval Weapons Center.

There are several US patents for "glow stick" type devices by various inventors. The majority of these are assigned to the US Navy. The earliest patent lists Clarence W.

Gilliam, David Iba Sr. and Thomas N. Hall as inventors of the Chemical Lighting Device in October, 1973 (Patent 3,764,796).

In June, 1974 the first Chemiluminescent Device patent was issued with Herbert P. Richter and Ruth E. Tedrick listed as the inventors (Patent 3,819,925).

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