Originally posted by northernladuk
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Dark winter
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Always forgive your enemies; nothing annoys them so much. -
A while ago I came across this interesting talk and dissection of the Dubai Lamp https://www.youtube.com/watch?v=klaJqofCsu4Comment
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From the article
LED lights last five times longer than traditional halogen bulbs and produce the same amount of light, but use up to 80% less power.
And aren't made in China, or with rare earth elements the Chinese have cornered the market in!Last edited by OwlHoot; 10 June 2021, 10:00.Work in the public sector? Read the IR35 FAQ hereComment
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Well there's a thing:
https://pubs.usgs.gov/sir/2012/5215/...r%20technology.
Metals such as arsenic, gallium, indium, and the rare-earth elements (REEs) cerium, europium, gadolinium, lanthanum, terbium, and yttrium are important mineral materials used in LED semiconductor technology.
Most of the world’s supply of these materials is produced as byproducts from the production of aluminum, copper, lead, and zinc. Most of the rare earths required for LED production in 2011 came from China, and most LED production facilities were located in Asia.
https://www.photonics.com/Articles/M...ed_LEDs/a58091
LED lamps are manufactured with a variety of materials, including glass or plastic for the housing, ceramic or aluminum for the heat sink, copper for the resistors and cables — and more expensive elements such as indium and gallium inside the semiconductor diode, and rare earths such as europium and terbium in the phosphor material.Last edited by DoctorStrangelove; 10 June 2021, 12:27.When the fun stops, STOP.Comment
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Originally posted by _V_ View PostAs long as you avoid the unbranded super cheap Chinese marketed crap, LED bulbs I have do not flicker in any visible way, are super bright (too bright in some cases) and last many years before replacement. Why anyone would use anything other than LED is beyond me, and govt should have banned anything using more than 5w power years ago.
Be glad when all heating and lighting is super low energy and from renewables only. Anyone who is thinking of joining XR anyway, deserves to be put to sleep.
Campaigning to raise awareness about climate change is one thing. XR are just an excuse for a bunch of anarchists to cause trouble and damage property.Do what thou wiltComment
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Originally posted by Dark Black View Post
FTFY
Campaigning to raise awareness about climate change is one thing. XR are just an excuse for a bunch of anarchists to cause trouble and damage property.Originally posted by MaryPoppinsI'd still not breastfeed a naziOriginally posted by vetranUrine is quite nourishingComment
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I'm not a fan of LEDs. Had several lots installed in bathroom, kitchen and elsewhere in the last 4-5 years. The first lot were not very impressive, the supposed 'warm' light was anything but. My wife hated them.
We had ones put in our bathroom about 3 years ago and most failed within a few months. Had new ones put in again 18 months ago and that time the 'warm' lights were just about acceptable. However, half failed within a few months.
Meanwhile I've had halogen bulbs last 14 years and are still going and the light is much more preferable.Comment
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Originally posted by d000hg View Post
Whereas you are advocating for their murder. Now who's being extreme.
Do what thou wiltComment
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Oddly enough, the enemy of semiconductors & electronic components, Specifically In General, capacitors, is heat.
Whilst the halogen spot is remarkably unconcerned that it's running at 150 deg C in the fitting, the electronic replacement gets very upset by this and dies.
Not helped by what passes as a heatsink being at the top of the device in that sort of fitting.
Much the same sort of thing kills CFLs in enclosed fittings.Last edited by DoctorStrangelove; 10 June 2021, 19:31.When the fun stops, STOP.Comment
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