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2. List of automotive light bulb types - Wikipedia

   en.wikipedia.org/wiki/List_of_automotive_light...

   Similar US bulb: HB2 (9003) 12V: ECE nominal luminous flux: 1,650 / 1,000 lm ±15% Available with P45t base to upgrade old headlamps designed for R2 bulb H7 1 12 V: 55 W 24 V: 70 W PX26d USA, Japan 12V: ECE nominal luminous flux: 1,500 lm ±10% H8 1 12 V: 35 W PGJ19-1 USA ECE nominal luminous flux: 800 lm ±15% H8B 1 12 V: 35 W PGJY19-1 USA H9 1

3. 3-way lamp - Wikipedia

   en.wikipedia.org/wiki/3-way_lamp

   When they are both energized at the same time, 150 W of power is delivered, and a high level of light is produced. Usually screw-base 3-way bulbs fit into regular Type A sockets (E26D after ISO 60061-1:2014). Larger 3-way bulbs (up to 300 W) have a larger "mogul" base (E39D). These 3-way bulbs can also come in spiral-shaped compact fluorescent ...

4. Halogen lamp - Wikipedia

   en.wikipedia.org/wiki/Halogen_lamp

   The length (sometimes also referred to as "height") of any two-ended cylindrical bulb must be specified separately from its form factor code, usually in millimeters, as must the lamp's voltage and wattage— hence, T3 120 V 150 W 118 mm means a double-ended tube-shaped bulb with a diameter of 9.5 mm (3 ⁄ 8 in) that operates at 120 V and is ...

5. Phase-out of incandescent light bulbs - Wikipedia

   en.wikipedia.org/wiki/Phase-out_of_incandescent...

   60 W incandescent light bulb with energy efficiency class E Equivalent 42 W halogen incandescent light bulb with efficiency class C Compact fluorescent lamp LED lamp circa 2021. Various governments have passed legislation to phase out manufacturing or importation of incandescent light bulbs for general lighting in favor of more energy-efficient ...

6. Incandescent light bulb - Wikipedia

   en.wikipedia.org/wiki/Incandescent_light_bulb

   Incandescent bulbs have a shorter life than most other lighting, an important factor if replacement is inconvenient or expensive. Some types of lamp, including incandescent and fluorescent, emit less light as they age; this may be an inconvenience, or may reduce effective lifetime due to lamp replacement before total failure.

7. Sodium-vapor lamp - Wikipedia

   en.wikipedia.org/wiki/Sodium-vapor_lamp

   Some higher-power lamps (e.g. 600 watt) have efficacies of about 150 lumens per watt. Since the high-pressure sodium arc is extremely chemically reactive, the arc tube is typically made of translucent aluminum oxide. This construction led the General Electric Company to use the tradename "Lucalox" for its line of high-pressure sodium lamps.