Hot topics for both consumers and webmarketers on WebmasterRadio.FM
Every Wednesday, 4PM Eastern.
June 29, 2007, Newsletter Issue #70: Image Intensifier
1
Tip of the Week
Could we cue the MIT professor again, please? Here's the explanation of how an image intensifier works:
• An image, ultraviolet, visible light, or near infrared, is projected onto the transparent window of a vacuum tube.
• The vacuum side of this window carries a sensitive layer called the photocathode. Light radiation causes the emission of electrons from the photocathode into the vacuum which are then accelerated by an applied DC voltage towards a luminescent screen (phosphor screen) situated opposite the photocathode.
• The screen's phosphor in turn converts high energy electrons back to light (photons), which corresponds to the distribution of the input image radiation but with a flux amplified many times.
2
About LifeTips
Now one of the top on-line publishers in the world, LifeTips offers
tips to millions of monthly visitors. Our mission mission is to make
your life smarter, better, faster and wiser. Expert writers earn dough
for what they know. And exclusive sponsors in each niche topic help us
make-it-all happen.
