Editing Incandescent light bulb (section)

===Bulb shapes ===
[[File:incandescent bulb shapes.svg|thumb|upright=2|Incandescent light bulbs come in a range of shapes and sizes.]]
Bulb shape and size designations are given in national standards.   
Some designations are one or more letters followed by one or more numbers, e.g. A55 or PAR38, where the letters identify the shape and the numbers some characteristic size.

National standards such as [[ANSI]] C79.1-2002, [[Indian Standard|IS]] 14897:2000<ref name="IS 14897:2000">{{cite web |title=IS 14897 (2000): Glass Bulb Designation System for Lamps — Guide |publisher=Bureau of Indian Standards |location=New Delhi |url=https://archive.org/details/gov.in.is.14897.2000 |access-date=3 July 2018 |pages=1, 4 }}</ref> and [[Japanese Industrial Standards|JIS]] C 7710:1988<ref name="JIS C 7710:1988">{{cite web |script-title=ja:JIS C 7710:1988 電球類ガラス管球の形式の表し方|url=http://kikakurui.com/c7/C7710-1988-01.html |access-date=21 March 2017 |language=ja |url-status=live |archive-url=https://web.archive.org/web/20161111224419/http://kikakurui.com/c7/C7710-1988-01.html |archive-date=11 November 2016}}</ref> cover a common terminology for bulb shapes.

{| class="wikitable"
|+ Examples
|-
! Description !! SI !! Inch !! Details
|-
| "Standard" lightbulb || A60 E26 || A19 E26 || [[⌀]]60&nbsp;mm (~⌀19/8&nbsp;in) [[A-series light bulb|A series bulb]], ⌀26&nbsp;mm [[Edison screw]]
|-
| Candle-flame bulb || CA35 E12 || CA11 E12 || ⌀35&nbsp;mm (~⌀11/8&nbsp;in) candle-flame shape, ⌀12&nbsp;mm Edison screw
|-
| Flood light || BR95 E26 || BR30 E26 || ⌀95&nbsp;mm (~⌀30/8&nbsp;in) flood light, ⌀26&nbsp;mm Edison screw
|-
| Halogen track-light bulb || MR50 GU5.3 || MR16 GU5.3 || ⌀50&nbsp;mm (~⌀16/8&nbsp;in) [[multifaceted reflector]], 5.33&nbsp;mm-spaced 12&nbsp;V [[bi-pin connector]]
|}