Tritium update

- D
- Don Lancaster
  
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posted
12 years ago

Sun, Nov 27, 2011 10:52 PM

Pure green light is about 668 Lumens per watt maximum possible efficiency.

Pure white light is about 334 Lumens per watt maximum possible efficiency. Somewhat depending on what you mean by "white".

See <

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> for a tutorial.

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- M
- Martin Brown
  
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posted
12 years ago

Mon, Nov 28, 2011 8:45 AM

White phosphors in fluorescents are a mixture of mostly red emitters and some blue to balance out the very strong green mercury line.

The fluorescent dyes used to whiten clothes are actually blue purple emitters to hide any yellowing. A as visit to a UV disco will show.

Moreover if you choose your phosphor wisely you can arrange that when stimulated it will emit photons close to the eyes peak low light sensitivity of around 510nm. You don't see colour at these low light levels on scintillators anyway. It is worth at least a factor of two over using a "white" phosphor - you should do more homework.

No. You only have to take a look at the eyes scotopic wavelength sensitivity curve to see that you are barking as usual.

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BTW You need to use a microscope to see individual scintillation events.

Regards, Martin Brown

- J
- Jan Panteltje
  
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posted
12 years ago

Mon, Nov 28, 2011 10:02 AM

Martin Brown

No you don't

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Just a CD, short shutter time, and a zoom. And a decent camera of course.

So what electronics have you designed lately?

- J
- Jan Panteltje
  
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posted
12 years ago

Mon, Nov 28, 2011 10:03 AM

On a sunny day (Sun, 27 Nov 2011 13:58:13 -0800) it happened John Larkin wrote in :

For perception yes. Hey I am not saying you are wrong, just that measuring that EM energy would be more accurate, and not be affected by the eye's sensitivity curve. Anyways, it is still brighter than an Obama Blacklight.