Subject Started by Replies Views Last post
why metal halide lamps explode section 2[new] form109 3 2497 August 04, 2008, 04:52:25 PM
by Mr. Big
Why mercury free HPS lamps, are less efficient than standard HPS lamps? dor123 0 562 August 21, 2022, 07:08:23 AM
by dor123
Why LPS lamps were so popular in the UK, if it wasn't a british invention? dor123 6 1807 April 11, 2016, 01:09:42 AM
by tolivac
Why Iwasaki 2000W MV lamps are so large dor123 2 751 April 07, 2022, 09:26:17 PM
by bulb_tester2009
Why is the lifespan of metal halides reduced to half when burned horizontal? « 1 2 » Robotjulep 20 2036 April 03, 2024, 03:46:51 PM
by WorldwideHIDCollectorUSA
Why is it that 400w tubular metal halide lamps can only be operated enclosed? Mr. Orthosilicate 12 2882 November 20, 2019, 08:48:31 AM
by Mandolin Girl
Why is fluorescent lighting becoming less appreciated on LG in recent times? « 1 2 3 » WorldwideHIDCollectorUSA 30 4538 December 11, 2022, 08:32:03 PM
by Econolite03
Why HPS retrofits for MV ballasts with neon hot restrikes from no glow at all dor123 11 2640 December 17, 2011, 05:48:43 PM
by Ash
Why hardglass halogen capsules have an exhaust tip like their quartz counterpart dor123 2 924 October 21, 2022, 03:40:29 PM
by James
Why glow starters kills themselves when a fluorescent lamp reaches EOL dor123 1 1398 November 13, 2010, 02:23:19 AM
by Medved
Why Don’t We Use Magnetic Arc Deflectors with Metal Halide Lamps? Mr. Orthosilicate 10 2531 October 13, 2021, 07:00:01 PM
by James
why does MV glow dimly at first while restrikng, then go out completely? ace100w120v 6 2516 January 07, 2012, 11:19:53 PM
by LowPressureSodiumSOX
Why does Japan have very few off brand light bulbs? WorldwideHIDCollectorUSA 6 999 September 03, 2022, 09:00:25 AM
by Silverliner
Why does Europe have a BC socket and Screw in TudorWhiz 1 1716 March 24, 2009, 08:09:36 PM
by Medved
Why do some CFL's buzz? lightman64 4 2294 April 04, 2009, 12:44:52 PM
by bluelights
Why do so many of us prefer magnetic ballasts over electronic ballasts? WorldwideHIDCollectorUSA 9 1799 October 28, 2020, 03:44:15 PM
by Ash
Why do probe start metal halide lamps need to be group replaced? WorldwideHIDCollectorUSA 6 1133 April 29, 2021, 09:19:36 PM
by Xytrell
WHy do people hate ALTO bulbs? HomeBrewLamps 9 1695 August 06, 2017, 11:15:16 AM
by sol
Why do most Japanese non-integrated CFL lamps use G10Q bases? WorldwideHIDCollectorUSA 5 821 August 03, 2022, 06:12:08 PM
by WorldwideHIDCollectorUSA
Why do Japanese screw base lamps use the North American designations? WorldwideHIDCollectorUSA 11 1495 August 17, 2022, 02:05:14 PM
by WorldwideHIDCollectorUSA
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