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most recent messages 5/24/2013 7:28:26 PM Ron Amok The answer to your question defies expert consensus, Michael... blog roll message boards chat Monday Roundup: Heroes & Villains Keith Dawson, Editor-in-Chief, 5/24/2013 Comment now 4 comments This week: proximity-activated LEDs in an engagement ring, the heroes and the villains of the LED lighting world, and the way to get a bridge lit up by LEDs. Most recent post, Ron Amok, 5/24/2013 7:03:55 PM The bridge wasn't "ready to fail". Witnesses reported that several beams actually... Bright Lights You Can't See Alfred Poor, Speaker & Author, 5/24/2013 Comment now 1 Comment High-brightness LEDs are changing lighting for obvious reasons: high efficiency, compact size, low maintenance costs. But why would you want an LED emitting light that you can't even see? Most recent post, kdawson, 5/24/2013 9:49:55 AM Anybody have a Samsung Galay S4? I'm curious to hear your experience of the gesture-based... LEDs at Maker Faire Ron Amok, CTO/CEO, YoYo Dyne Systems, 5/23/2013 Comment now 21 comments Maker Faire Bay Area was an exuberant outpouring of all things geeky and home-brew. Of course there were plenty of LEDs. Most recent post, Ron Amok, 5/24/2013 7:28:26 PM The answer to your question defies expert consensus, Michael... The Next Energy Star Draft Keith Dawson, Editor-in-Chief, 5/22/2013 Comment now 5 comments The fourth and penultimate draft of the Energy Star requirements for LED lamps is out. Most recent post, bjcoppa, 5/23/2013 4:14:47 PM The fact we are even talking about energy star ratings for lighting is a good thing.... p-ZnO Breakthrough Lifts UV LED Prospects Brian Coppa, Technology Columnist, 5/22/2013 Comment now 7 comments Researchers from North Carolina State University recently reported a breakthrough in the decades-long quest to fabricate p-type zinc oxide, to enable efficient ultraviolet lasers and LED devices. Most recent post, Ron Amok, 5/24/2013 7:25:39 PM I think we'll see the solar cell phenomenon come to LEDs, where margins will get... OLED Lighting on the Ascendent by 2015 Keith Dawson, Editor-in-Chief, 5/21/2013 Comment now 10 comments As the decade advances, organic LEDs (OLEDs) used for lighting, a technology now in its infancy, will gain on and approach parity with inorganic LEDs. Most recent post, kdawson, 5/22/2013 3:31:47 PM That would be great. IdTechEx declined to make that report available to me. Perhaps... Of Light, Snow & Ice Karl Hakkarainen, Consultant & Blogger, 5/21/2013 Comment now 6 comments Not all the heat produced by old lighting systems was waste heat. It melted snow and ice, a fact not appreciated until LED traffic lights were deployed in colder regions. Most recent post, Measurementblues, 5/23/2013 8:35:43 PM "We don't look the other drivers in the eye." Spoken like a true Boston driver.... Who Needs PFC? Ron Lenk, Founder & Principal, ReliaBulb, 5/20/2013 Comment now 3 comments In my LED driver consulting business, almost everyone seems to want Power Factor Correction, PFC. And yet, it is not a requirement for most LED lighting. So what's the story? Most recent post, kdawson, 5/20/2013 1:06:26 PM Do you know whether there are variable rates to SELL power back to utilities depending... Monday Roundup: Politically Correct Keith Dawson, Editor-in-Chief, 5/20/2013 Comment now 6 comments This week: competition in action, why we need to be politically conscious about the messages on LED packaging, and grants to advance OLEDs. Most recent post, bjcoppa, 5/20/2013 8:51:08 PM Thanks Keith for keeping us updated on industry developments. Most of the OLED companies... The Speed of Dark Keith Dawson, Editor-in-Chief, 5/17/2013 Comment now 9 comments Do living things require darkness? To what extent is artificial lighting at night a pollutant? To find out, we talked with a scientist who approaches light from the dark side. Most recent post, eafpres, 5/20/2013 12:14:33 AM The great promise of LEDs here is that compared to old "light therapy" devices I... Preparing for the Coming Catastrophe Ron Lenk, Founder & Principal, ReliaBulb, 5/17/2013 Comment now 9 comments Here is one piece of history we had darned well better prevent from repeating itself. Most recent post, bjcoppa, 5/23/2013 3:32:02 PM It sounds like we both agree on this and are simply caught up in the verbage. Your... Next 5 blogs + All blogs All blogs most commented 21 LEDs at Maker Faire Ron Amok, CTO/CEO, YoYo Dyne Systems, 5/23/2013 10 OLED Lighting on the Ascendent by 2015 Keith Dawson, Editor-in-Chief, 5/21/2013 7 p-ZnO Breakthrough Lifts UV LED Prospects Brian Coppa, Technology Columnist, 5/22/2013 6 Monday Roundup: Politically Correct Keith Dawson, Editor-in-Chief, 5/20/2013 6 Of Light, Snow & Ice Karl Hakkarainen, Consultant & Blogger, 5/21/2013 blog roll message boards chat 5/24/2013 7:28:26 PM To err is human, to arr! is pirate: The answer to your question defies expert consensus, Michael... Ron Amok on LEDs at Maker Faire 5/24/2013 7:25:39 PM NSF is welfare for academics: I think we'll see the solar cell phenomenon come to LEDs, where margins will get so washed out that you get what you get technologywise and next to zero money will be put into basic device physics and everything will go into yield enhancement... Ron Amok on p-ZnO Breakthrough Lifts UV LED Prospects 5/24/2013 7:03:55 PM The bridges are not falling: The bridge wasn't "ready to fail". Witnesses reported that several beams actually fell to the roadway after being hit by an oversize load on a truck. As in all disastrous collapse cases, there's only so much idiocy that engineers can account... Ron Amok on Monday Roundup: Heroes & Villains 5/24/2013 4:10:28 PM Re: Sensors instead of lights?: Hi Keith--I was aware of the sequence of events; however reading the reports and considering what happened, my view is the bridge was ready to fail and the truck impact put it over the edge. If it had been monitored perhaps it would have... eafpres on Monday Roundup: Heroes & Villains 5/24/2013 2:58:12 PM Re: Advantages to a UV source for white light?: Good points. The DOE does support clear roadmaps to success in materials development for core devices that offer well-defined benefits ie GaN substrate growth for GaN LEDs in energy-efficient solid-state lighting. ZnO funding is more likely... bjcoppa on p-ZnO Breakthrough Lifts UV LED Prospects 5/24/2013 2:58:12 PM Re: Advantages to a UV source for white light?: Good points. The DOE does support clear roadmaps to success in materials development for core devices that offer well-defined benefits ie GaN substrate growth for GaN LEDs in energy-efficient solid-state lighting. ZnO funding is more likely... bjcoppa on p-ZnO Breakthrough Lifts UV LED Prospects 5/24/2013 2:44:53 PM Re: Sensors instead of lights?: Sensors like you describe are a good idea in general, but might not have helped in this particular collapse, which seems to have been caused when an oversized truck load hit supporting structural elements on the bridge. Unfortunately we know... kdawson on Monday Roundup: Heroes & Villains 5/24/2013 2:32:07 PM Sensors instead of lights?: Hi Keith--previously I argued in support of public arts projects in your original blog on lighting bridges. After yesterdays collapse of a Washington State bridge that is part of I-5, I am swayed to suggest putting the money into wireless... eafpres on Monday Roundup: Heroes & Villains 5/24/2013 12:26:04 PM Re: Fab: Sounds like a plan! There was a mini-Faire in Toronto, but I didn't get to it either... MD on LEDs at Maker Faire 5/24/2013 12:25:05 PM Re: Maker Faire sounds great but...: >you'd think the geniuses at Apple could figure out how to record video right side up My iDevice works fine in all orientations. Sounds like human error. You're human, right? ;-) MD on LEDs at Maker Faire 5/24/2013 11:46:03 AM Re: Fab: Michalel - sorry you missed the NY maker Faire this year - it felt a little derivative and lacked some of the whimsy of the San mateo event but made up for it with some exhibitors who brought a NY-style edge to their creations. And there's... Lee Goldberg on LEDs at Maker Faire 5/24/2013 9:49:55 AM Air Gesture?: Anybody have a Samsung Galay S4? I'm curious to hear your experience of the gesture-based interface. kdawson on Bright Lights You Can't See Next 5 messages + All messages All messages blog roll message boards chat 5/16/2013 1:49:57 PM Chat with Robert Dick: The need for dark: By for now, Cheers R D CSbG Photon 5/16/2013 1:49:20 PM Chat with Robert Dick: The need for dark: We must be careful not to take darkness to the extreme. I use my studies into Scotobiology to determine what characteristics of ALAN can be specificed to achieve a balance. As research continues, I may alter my current limits, but they have... CSbG Photon 5/16/2013 1:48:29 PM Chat with Robert Dick: The need for dark: Robert, thanks very much for your time and expertise! We all learned a bunch. kdawson Editor 5/16/2013 1:48:12 PM Chat with Robert Dick: The need for dark: I take my orange in liquid form ;-) And at night, sometimes with alcohol added. MD Photon 5/16/2013 1:47:03 PM Chat with Robert Dick: The need for dark: You don't have to be a scotobiologist to know which way the dark flows. kdawson Editor 5/16/2013 1:46:40 PM Chat with Robert Dick: The need for dark: I understand from studies into vitamin use that natural production resumes. As a personal observation, if I stop taking my orange in the morning for a week or so - I get a cold! Coincidence? CSbG Photon 5/16/2013 1:46:28 PM Chat with Robert Dick: The need for dark: Thanks for an illuminating discussion ;-) Ciao jbosavage Photon 5/16/2013 1:45:49 PM Chat with Robert Dick: The need for dark: >Electronic Billboards are "designed" to distract drivers. Similarly, animated LED displays can be a hazard It boggles me that such things are allowed. Video on a billboard. Idiots! MD Photon 5/16/2013 1:45:45 PM Chat with Robert Dick: The need for dark: Fascinating (again)! JVerity Photon 5/16/2013 1:44:56 PM Chat with Robert Dick: The need for dark: As an aside - LEDs are not just used for illumination. They can cause hazards. Visual clutter along a roadway is VERY distracting, yet most cities exercise virtually no controls over this distraction. Electronic Billboards are "designed"... 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