Subject Started by Replies Views Last post
White SON SDW-T Gear MetalHalideHater 3 1283 December 07, 2015, 02:03:33 AM
by dor123
Who came up with idea first? vytautas_lamps 7 2485 February 20, 2019, 05:31:24 PM
by James
who has a collection bulbs philips ALTO? « 1 2 3 » giancraloHPS 31 8769 August 08, 2015, 07:10:22 PM
by sol
Who makes better Halogen Floods:GE or Sylvania Lightguy 2 1558 April 17, 2012, 11:50:57 PM
by RyanF40T12
Who Makes Quality T5 28W Tubes? John 9 1120 February 28, 2021, 04:57:15 PM
by Medved
Why 250 W 3 way bulbs now replaced 100 W or 150 W? Cole D. 2 569 October 02, 2023, 03:41:29 PM
by Cole D.
Why 3500K called white and not 5500K or 5000K? dor123 10 1289 March 08, 2023, 10:42:50 PM
by WorldwideHIDCollectorUSA
Why actually the americans calls the circular fluorescents "Circline"? « 1 2 » dor123 15 4278 January 08, 2017, 09:33:50 AM
by funkybulb
Why adding Indium to metal halide somethimes creates black matter in MH lamp? RRK 0 428 June 03, 2023, 01:55:05 PM
by RRK
Why America Banned Incandescent Light Bulbs rjluna2 3 642 August 01, 2023, 10:32:23 AM
by rjluna2
Why American ballasts runs 35W CMH lamps at 39W? dor123 5 969 October 01, 2021, 07:57:18 AM
by Medved
Why are /W fluorescent tubes no longer made? WorldwideHIDCollectorUSA 7 1589 November 10, 2021, 10:03:36 PM
by WorldwideHIDCollectorUSA
Why are 3500K and 4200K CCTs so uncommon among Japanese low wattage CFL lamps? WorldwideHIDCollectorUSA 1 893 September 25, 2022, 03:31:58 PM
by Medved
Why are 5000K fluorescent lamps so popular in Japan? WorldwideHIDCollectorUSA 5 838 April 28, 2022, 01:31:52 PM
by WorldwideHIDCollectorUSA
Why are circline fluorescent lamps so popular in Japan? WorldwideHIDCollectorUSA 7 1662 March 12, 2023, 10:42:24 PM
by WorldwideHIDCollectorUSA
Why are CWA ballasts bad for Multi Metal Hi Ace, Super Ace, and Clean Ace lamps? WorldwideHIDCollectorUSA 1 648 November 15, 2020, 08:15:57 PM
by Medved
Why are European HPS lamps not ideal for operation on CWA gear? WorldwideHIDCollectorUSA 3 819 January 27, 2021, 06:36:06 AM
by Medved
Why Are F36T8 Tubes Almost Non Existent in North America? 108CAM 8 1209 August 26, 2022, 11:43:22 AM
by funkybulb
Why are FUL CFL lamps commonly used in insect killers? WorldwideHIDCollectorUSA 3 700 July 02, 2022, 03:17:13 AM
by WorldwideHIDCollectorUSA
Why are incandescents still legal in African countries? WorldwideHIDCollectorUSA 2 762 November 05, 2021, 09:22:31 AM
by Mandolin Girl
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