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Shweta Thakur posted an Question

August 07, 2020 • 22:24 pm

30 points

IIT JAM
Chemistry (CY)

What is difference between fluorescent screen and phosphorescent material

what is difference between fluorescent screen and phosphorescent material

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Narayanarao gundoju

fluorescent materials cease to glow nearly immediately when the radiation source stops, unlike phosphorescence material, which continue to emit light for some time after. thank you
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thanku sir
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Dinesh khalmaniya 1

n fluorescence, the emission is basically immediate and therefore generally only visible, if the light source is continuously on (such as UV lights); while phosphorescent material can store the absorbed light energy for some time and release light later, resulting in an afterglow that persists after the light has been switched off. Depending on the material, this afterglow can last anywhere from a few seconds to hours. So if it disappears immediately, it’s fluorescence.
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thanks sir
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Priyanshu kumar Best Answer

a transparent screen coated with fluorescent material to show images from X-rays...This is called fluoroscent screen
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Everyday examples of phosphorescent materials are the glow-in-the-dark toys, stickers, paint, wristwatch and clock dials that glow after being charged with a bright light such as in any normal reading or room light.
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where you have doubt shweta??
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In photoluminescence there are two terms...fluorescence and phosphorescence....the only difference is that flouriscenece re emits radiations immidiately but phosphorescence doesn't
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ok sir
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