Definitions for "Fluorescent tube"
a low pressure discharge lamp which consists of a glass tube coated with phosphors, trace amounts of mercury and an electrode at each end of tube
an extended light source and light intensity falls off more slowly from an extended source than from a point source like a HID bulb
an omnidirectional radial line source and much of the light must be redirected if the tube is to provide useful illumination
Keywords:  temperature, device, two
a two temperature device