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Incandescent lamps, Neon lamps and other types of lamps are all commonly known for using the principle of electric discharge. Incandescent lamps use a metal wire filament inside an evacuated glass container to create light. The heat from the filament causes the surrounding gas molecules to excite, which sends light outward when heated to a certain temperature. They usually have a range of color temperatures, as their brightness depends on the filament temperature.

Neon lamps, on the other hand, use gas filled tubes that are charged with an electrical current. The current passes through the tube and the gas becomes excited, causing the electrons to jump from one atom to another. As they travel between the atoms, light is emitted in certain colors. The color is determined by the type of gas used, with noble gases like Neon and Argon producing orange, purple, and green light respectively.

This type of light has many useful applications in the modern world. It can be used for indoor and outdoor lighting, as well as for advertising signs, accent lighting, medical diagnosis, and even astronaut navigation. Incandescent lamps are commonly used for interior lighting, while neon lamps are most commonly used for signs.

Other types of lamps which use the principle of electric discharge are fluorescent lamps, metal halide lamps, and xenon flash tubes. Fluorescent lamps are more efficient than incandescent and neon lamps and can be used to light larger areas. Metal halide and xenon lamps are usually used in special applications, such as street lighting.

In conclusion, electric discharge lamps are an incredibly useful source of light for a variety of applications. Incandescent, neon, and other types of electric discharge lamps can all be used in different situations depending on the needs of the user. While incandescent lamps are good for interior lighting, neon lamps are best used for signage. Metal halide and xenon lamps are usually used for street lighting and other special applications.