Because it is made to do so.
An incandescent light bulb glows because electricity heats the filament until it is very hot and excites the atoms so much they emit "black body" radiation, much of which is in the visible part of the spectrum.
lomentwist
It gives yellow light
The answer to the question "What gives you plenty of light?" with 5 letters is a "lamp." A lamp is a device that produces light by the flow of electrical current or burning fuel. It typically consists of a bulb, socket, and shade to direct and diffuse the light emitted.
magnesium
A blacklight is a lamp used for decoration which gives off ultraviolet light.
A desk lamp which takes a regular size bulb. You could easily change it to a higher watt.
Both are acceptable with different meaning. I read by the light of the lamp means I use the lamp to light the pages so that I can read them. I saw it in the light of the lamp means it was visible in that pool of light caused by the lamp.
Your standard light bulb where a filament is heated by a current passing through it. The heated filament then gives off light.
Candle Jack-o-Lantern Flashlight Moon
Yes, anything that gives off light e.g. the sun is luminous. So would be a lamp and the moon, however not all things e.g. Not a mirror, not a table and not a piece of paper.
A heat lamp gives off radiant energy in the form of infrared light. This energy is absorbed by objects and surfaces, warming them up by increasing the kinetic energy of their molecules.
the uses of lamp is to light us.....