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Distribution: Ubuntu 17.10 Artful Aardvark and openSuSE LEAP 42.3
Posts: 44
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Quote:
Originally Posted by MTK358
I always thought that there's no such thing as a true "white LED". If that's true, then why are all "white LEDs" actually blue LEDs with yellow phosphor added to them?
Hi MTK358
Correct in the colour not being actually true "bright/brilliant" white, but they are not blue either, that's the packaging/encapsulation around them creating a change, and also older/early design of LED's. If you strip that away or you get the LED's today that are in clear encapsulation, then they glow white, a natural white. The dopings, one you mentioned, onto the normal silicon substrate create the colours or are used to create brighter illumination such as for vehicle headlights. But they are white, as I mentioned look at the high bright car headlights, pure white LED clusters, with lenses to focus the collection of the light. Pure white LEDS are common now for dentistry, photographic white boards, the motor industry, house lighting, aircraft gauges and instruments etc.
Here are links for all to read about the topic similiar to what I explained here, and more to TV's. They still get it wrong though calling them LED TV's. One seems more aimed at Samsung but the explanation and technology remains the same. The only difference now between TV's and monitors is the built in TV tuners, and the sizes being larger for TV.
Distribution: Ubuntu 11.4,DD-WRT micro plus ssh,lfs-6.6,Fedora 15,Fedora 16
Posts: 3,233
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a couple of dell crt monitors (19" and 21" i think, havn't measured them)
2 Wy-150s (terminals not technically 'monitors', but oh well)
and this puppy (with one of the wyse monitors on it) attached to the composite out of one of the video cards.
ViewSonic flat 15-inch, which replaced a dead IBM 15-inch CRT, which replaced a dead Philips 12-inch amber screen (remember them?). If it's not broken, I don't change it.
samsung - nice
does something like 6000.4000 ... it is a dual business class .. and the colours .... oh my
it was vwrry xpensive - more than most peoples entire pc
For my desktop, I have a 13-inch Princeton Viewsonic CRT monitor which I picked up cheap from a member of my LUG. Other than weighing a ton, it's a nice monitor.
I'm thinking of picking up a newer LED monitor from my local thrift store.
For many years I used 2 x Sony 19" CRTs off of one card for a wide-screen display. They ran at 120Hz which was the matching cap I placed on framerates in Q3Arena which allowed God-like movement and response in that game that addicted me for 20 years. Now I'm older and have settled for convenience over performance with a 32" Vizio HDTV though it has moderately good response at 1920 x 1080.
Regarding CRT's vs LCD vs LED - I was once very excited over a tech combination with what seemed great promise. It was a thin screen with all the benefits of CRT in that it had an actual phosphor screen in an evacuated enclosure but employed millions of solid-state guns arranged in a matrix parallel to the screen, one per phosphor. I even bought stock in the company after they closed a deal for instrument displays in the Abrahms Tank..... just 2 months before the CEO died and the company dissolved.
That's way cool and I know this from experience but be warned to see the projector in use if at all possible since resolution is key and it costs. I bought a Viewsonic several years ago that would do 1024 x 680 and while admittedly immersive for games on a 4 foot by 6 foot screen it really lacked resolution for movies unless viewed at really long distances and then of course it is small. 1080p resolution seems to cost well over $500.00 US but the very cheapest are over half way there so choose carefully. Incidentally the bulbs cost around 80 of the projector cost and they don't last long.
A Samsung UN19F 19 inch TV using its HDMI port to connect my computer.
It only does 720p but it displays rather nicely considering it was just a replacement for my old Vizio
Distribution: Debian Sid AMD64, Raspbian Wheezy, various VMs
Posts: 7,680
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On my desktop (which is used for movies, web browsing, Second Life, Goat Simulator and other fun stuff) I've an iiyama ProLite* E2403WS which at the time I bought it I thought was pretty poorly specced response time wise but a quick google tells me it may not be so bad -- it's 1920*1200 so is great for movies and controls or windowed games like Second Life. Then I've an AMW** 1280*1024 secondary monitor I can use for email and the like.
Ideally I'd like a larger 16:10 screen and buy a stand to use the iiyama in portrait mode as the secondary screen then I could use the AMW** on my Pi, perhaps. I think what I'll end up doing though is buying a gaming video card and a pair of "4K" monitors, eventually, dispose of the AMW and use the iiyama for my Pi (would be nice to have "digital picture frame").
*Meaning no adjustable stand or USB sockets etc..
**I don't actually know whether this is a real make or just some label on a generic monitor -- my friend had a "GnR" monitor that was almost identical.
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