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2. Lightbulb socket - Wikipedia

   en.wikipedia.org/wiki/Lightbulb_socket

   Miniature lamps may have a wedge base made of glass or plastic. The base may be an extension of the glass envelope of the bulb, with the wire leads of the lamp folded up at the base. Some wedge bases are made of plastic and slipped over the wire leads. A wedge base holds the lamp by spring compression in the socket.

3. Edison screw - Wikipedia

   en.wikipedia.org/wiki/Edison_screw

   This is distinct from the glass envelope (bulb) diameter, which in the U.S. is given in eighths of an inch, e.g., A19, MR16, T12. [13] There are four commonly used thread size groups for mains supply lamps: Candelabra: E12 North America, E11 in Europe; Intermediate: E17 North America, E14 (Small ES, SES) in Europe

4. Mogul lamp - Wikipedia

   en.wikipedia.org/wiki/Mogul_lamp

   A mogul lamp or six way lamp is a floor lamp which has a large center light bulb surrounded by three (or four) smaller bulbs that may be candelabra-style or standard medium-base bulbs, each mounted base-down.

5. A-series light bulb - Wikipedia

   en.wikipedia.org/wiki/A-series_light_bulb

   The A-series light bulb is the "classic" glass light bulb shape that has been the most commonly used type for general lighting service (GLS) applications since the early 20th century. It has a pear-like shape and is typically fitted to either an Edison screw or a bayonet cap base.

6. 3-way lamp - Wikipedia

   en.wikipedia.org/wiki/3-way_lamp

   A 3-way lamp, also known as a tri-light, is a lamp that uses a 3-way light bulb to produce three levels of light in a low-medium-high configuration. A 3-way lamp requires a 3-way bulb and socket, and a 3-way switch. In 3-way incandescent light bulbs, each of the filaments operates at full voltage. Lamp bulbs with dual carbon filaments were ...

7. Incandescent light bulb - Wikipedia

   en.wikipedia.org/wiki/Incandescent_light_bulb

   Thus the glass bulbs or envelopes are created. A typical machine of this sort can produce anywhere from 50,000 to 120,000 bulbs per hour, depending on the size of the bulb. [108] [109] By the 1970s, 15 ribbon machines installed in factories around the world produced the entire supply of incandescent bulbs. [110]