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Light bulb companies are making LED light bulbs with lower lifespans |
Lightingeye60 |
11 |
2976 |
July 11, 2026, 11:40:10 PM
by lightsofpahrump |
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Arc length of Osram HQI-TS /WDL /NDL and /D, question |
dor123 |
2 |
1622 |
July 08, 2026, 10:09:03 AM
by dor123 |
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GE making 25W equivalent LEDs? |
Lightingeye60 |
3 |
3742 |
June 28, 2026, 12:12:43 PM
by Lightingeye60 |
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Did Philips shutdown Polish plants ? |
Jovan |
7 |
2611 |
June 27, 2026, 10:35:45 PM
by Lightingeye60 |
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Why daylight compact MH lamps, rarely using Dy-Tl-Cs? |
dor123 |
7 |
1871 |
June 27, 2026, 07:32:23 AM
by dor123 |
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How Bright Is This Lamp Really? |
DidiusMalloricus |
6 |
1664 |
June 25, 2026, 05:26:09 PM
by WorldwideHIDCollectorUSA |
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Philips SDW drivers |
Lateroo |
3 |
1007 |
June 24, 2026, 11:21:51 PM
by Lateroo |
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Why some MH lamps have less bright electrodes than others, during ignition? |
dor123 |
4 |
1319 |
June 24, 2026, 12:55:34 PM
by RRK |
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The new 2028 law will ban most light bulbs sold today « 1 2 » |
Lightingeye60 |
18 |
5022 |
June 24, 2026, 11:36:51 AM
by SoxFtw |
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CFLs and most snowcone LEDs will be banned in 2028 |
Goodlighting2000 |
5 |
1469 |
June 21, 2026, 08:01:13 AM
by Lipstickquid |
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Cree Household LED bulbs going purple? |
Goodlighting2000 |
1 |
1262 |
June 20, 2026, 11:49:11 PM
by Lightingeye60 |
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Have all lighting manufacturers discontinued high pressure mercury vapor lamps? |
WorldwideHIDCollectorUSA |
9 |
1859 |
June 20, 2026, 09:52:13 PM
by Silverliner |
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Unidentified HPS Holophane Style High Mast Offset Light |
Omnilight37 |
4 |
1330 |
June 16, 2026, 03:18:50 AM
by Baked bagel 11 |
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Japanese Hitachi lamp Catalog 2016 |
WorldwideHIDCollectorUSA |
2 |
13173 |
June 13, 2026, 09:15:13 PM
by WorldwideHIDCollectorUSA |
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UVA pumped LEDs? « 1 2 » |
Laurens |
15 |
8471 |
June 10, 2026, 11:42:30 AM
by Laurens |
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Why Na-Sc chemistry causes fast lumen depreciation? |
dor123 |
12 |
2686 |
June 01, 2026, 03:57:41 PM
by James |
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Are Sylvania Relumina really have lanthanum? |
dor123 |
3 |
1344 |
May 27, 2026, 07:00:39 AM
by James |
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What is the first screw-in LED bulb you’ve ever seen in your life? |
Lightingeye60 |
1 |
1579 |
May 23, 2026, 01:11:54 PM
by James |
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Why don’t CFLs look like linear fluorescents? |
Lightingeye60 |
4 |
5009 |
May 18, 2026, 12:45:12 PM
by WorldwideHIDCollectorUSA |
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Interesting Mitsubishi Lighting Technical Document from 1983 |
WorldwideHIDCollectorUSA |
0 |
1304 |
May 15, 2026, 12:10:49 AM
by WorldwideHIDCollectorUSA |
