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Forum: General Light Discussion

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  1. Lumen to foot-candle conversion

    Started by K5Guy, 09-04-2007 06:12 PM
    • Replies: 12
    • Views: 82,131
    10-04-2018, 08:05 PM Go to last post
    • Replies: 0
    • Views: 458
    08-21-2018, 08:42 AM Go to last post
  2. Area/Dome Light Recommendation

    Started by rangefinder, 07-21-2018 09:14 PM
    • Replies: 2
    • Views: 722
    07-25-2018, 04:55 AM Go to last post
  3. Output of a camera flash in lumens?

    Started by cchurchi, 07-27-2007 10:36 AM
    • Replies: 23
    • Views: 60,883
    05-13-2018, 08:38 PM Go to last post
  4. SPD curves for standard light sources

    Started by tedfine, 04-16-2018 08:32 AM
    • Replies: 8
    • Views: 1,986
    05-02-2018, 07:50 PM Go to last post
  5. Phosphor conversion of photons in LEDs & photon recycling efficiency

    Started by Genzod, 02-23-2018 09:46 PM
    3 Pages
    1 2 3
    • Replies: 64
    • Views: 9,752
    05-01-2018, 12:53 PM Go to last post
  6. How many lumens is a street lamp?

    Started by StainlessSteel, 04-19-2005 11:33 PM
    • Replies: 19
    • Views: 35,004
    04-30-2018, 05:18 PM Go to last post
    • Replies: 6
    • Views: 2,647
    04-29-2018, 07:41 AM Go to last post
  7. Best single cell 18650

    Started by Shortydog, 04-02-2018 12:49 PM
    • Replies: 1
    • Views: 1,245
    04-02-2018, 07:01 PM Go to last post
  8. We have been doing our wake up lighting all wrong.

    Started by degarb, 02-18-2018 08:22 AM
    2 Pages
    1 2
    • Replies: 34
    • Views: 5,279
    03-25-2018, 12:54 PM Go to last post
  9. ceiling down lights, 97 CRI ?

    Started by Strintguy, 11-26-2017 03:03 PM
    • Replies: 6
    • Views: 2,898
    03-21-2018, 11:58 PM Go to last post
  10. Thumbs up Replacement driver - Advice please!

    Started by echo252, 03-17-2018 01:15 AM
    • Replies: 1
    • Views: 1,419
    03-18-2018, 01:46 PM Go to last post
    • Replies: 1
    • Views: 3,218
    02-28-2018, 02:14 AM Go to last post
  11. Phillips HUE to emulate GE Reveal

    Started by benhar, 02-04-2018 10:17 AM
    • Replies: 6
    • Views: 2,158
    02-28-2018, 01:27 AM Go to last post
  12. Flexible USB Notebook LED Lights

    Started by JAS, 02-11-2018 11:46 AM
    • Replies: 0
    • Views: 1,345
    02-11-2018, 11:46 AM Go to last post
  13. Replacement/equivalent to original Cree TW A19?

    Started by wws944, 02-01-2018 05:18 PM
    • Replies: 4
    • Views: 1,922
    02-05-2018, 08:05 AM Go to last post
    • Replies: 0
    • Views: 1,549
    01-23-2018, 04:03 AM Go to last post
  14. Blinking LED stops dsylexia

    Started by degarb, 10-19-2017 05:25 AM
    • Replies: 5
    • Views: 2,532
    01-19-2018, 02:10 PM Go to last post
  15. Do you still use incandescent light bulbs?

    Started by LCSZ, 06-07-2015 04:34 AM
    3 Pages
    1 2 3
    • Replies: 79
    • Views: 30,094
    01-15-2018, 06:44 PM Go to last post
  16. Minimum lux at target required to recognize a defined target?

    Started by Genzod, 06-09-2017 06:32 PM
    4 Pages
    1 2 3 4
    • Replies: 112
    • Views: 26,418
    01-15-2018, 11:06 AM Go to last post
  17. Need help making a lamp

    Started by Rodville, 01-12-2018 07:22 PM
    • Replies: 0
    • Views: 1,466
    01-12-2018, 07:22 PM Go to last post
  18. Power cables for street lighting installations

    Started by Alex-1kV, 12-15-2017 11:22 AM
    • Replies: 1
    • Views: 1,780
    12-31-2017, 04:31 AM Go to last post
  19. Vitamin D Lights?

    Started by Bright_Light, 09-25-2017 08:26 PM
    • Replies: 27
    • Views: 5,277
    12-15-2017, 08:38 AM Go to last post
  20. Red Light Therapy

    Started by Stephen7372, 11-04-2017 05:07 AM
    • Replies: 4
    • Views: 2,357
    12-13-2017, 07:24 PM Go to last post
  21. LGP laser etched dots or v grooves

    Started by anmb, 11-29-2017 05:32 AM
    • Replies: 8
    • Views: 2,556
    12-03-2017, 04:50 AM Go to last post
  22. Cylindrical beam spotlight

    Started by Datman, 11-15-2017 05:48 AM
    • Replies: 0
    • Views: 2,075
    11-15-2017, 05:48 AM Go to last post

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