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2. Edison screw - Wikipedia

   en.wikipedia.org/wiki/Edison_screw

   The E11 base is sometimes used for 50/75/100 Watt halogen lamps in North America, where it is called the "mini-can", and tighter threads are used to keep them out of E12 base nightlights and other places where they could start a fire. [citation needed] There are also adapters between screw sizes, and for adapting to or from bayonet caps.

3. E series of preferred numbers - Wikipedia

   en.wikipedia.org/wiki/E_series_of_preferred_numbers

   It consists of the E3, E6, E12, E24, E48, E96 and E192 series, [1] where the number after the 'E' designates the quantity of logarithmic value "steps" per decade. Although it is theoretically possible to produce components of any value, in practice the need for inventory simplification has led the industry to settle on the E series for ...

4. Preferred number - Wikipedia

   en.wikipedia.org/wiki/Preferred_number

   The aperture size controls how much light enters the camera. It is measured in f-stops : f /1.4 , f /2 , f /2.8 , f /4 , etc. Full f-stops are a square root of 2 apart. Camera lens settings are often set to gaps of successive thirds, so each f-stop is a sixth root of 2, rounded to two significant digits: 1.0, 1.1, 1.2, 1.4, 1.6, 1.8, 2.0, 2.2 ...

5. Lightbulb socket - Wikipedia

   en.wikipedia.org/wiki/Lightbulb_socket

   The two-pin socket is an update of the bi-post design with smaller pins designed to reduce the cost of manufacture. The 1000-watt FEL medium two-pin base halogen lamp allows designers to insert the lamp into the end of the ellipsoidal reflector through a smaller hole than previously possible with conventional incandescent lamps. This improves ...

6. Bubble light - Wikipedia

   en.wikipedia.org/wiki/Bubble_light

   Bubble lights have been made in two different lamp base sizes—E10 (C6) 15 volt, and E12 (C7). The original design used a miniature screw base (E10), such as those used on C6 cone-shaped Christmas lamps. For 120 V power, these early designs were nominally designed to operate with eight on one string, in series, at 15 volts each.

7. The IRS just announced big tax changes for 2025 - AOL

   www.aol.com/finance/irs-just-announced-big-tax...

   The IRS just dropped a raft of changes, big and small, to the U.S. tax code that could shift how much you owe — or save — in 2025. From bigger deductions to higher limits on health-related ...