Between 25 and 50.
Uvc light doesnt reflect off of walls.
Uv c or uvc is often referred to as germicidal uv.
How can ultraviolet light kill germs.
First what reflects the light whether it is uv visible or ir wavelength is the metal coating on the mirror.
Here s an easy mnemonic.
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I think we all realise that uv reflects off water especially those who enjoy a bit of.
Munchkin portable uv sterilizer amazon.
Uv c works only line of sight.
Most of you will probably have realised through personal experience that uv radiation doesn t just get you from above but can also reflect off different surfaces.
So here we have from long wave radiation low energ.
Reflecting off a wall expecting effective levels of uv c to bounce back is a fallacy.
But what surprised me was the level of uv that was reflected.
Additionally uv c does not reflect off any surface.
Ultraviolet light in this wavelength renders the organisms sterile.
The cap features a uv c light that can kill off some 99 99 percent of germs in the water making it safe for you to drink in just two short minutes.
Far uvc has a shorter wavelength than regular uvc and so far experiments with human skin cells in the lab have shown that it doesn t damage their dna more research is needed to be sure.
Ultraviolet uv c is a part of the electromagnetic spectrum between visible light and x rays in wavelength and energy.
The only surfaces that i ve found based on multiple sources that reflect uv rays to any degree are water snow around 80 of uv rays are retained white sand around 25 of uv rays are retained and pavement again.
They reflect uv rays poorly.
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It was discovered in the late 1800s that uvc light can actually be used as a uv light sanitizer with the ability to kill up to 99 9 of germs.
We have heard claims that low levels of uv c reflect off walls curtains screens etc so increasing time can sufficiently sanitize surfaces of a full room.
Short wave ultraviolet radiation in the c band of 200 to 280 nanometers has been used in a wide range of germicidal applications since the late 1800s to destroy bacteria mold yeast and viruses.
So far what i ve found is that surfaces that reflect visible light well do the opposite for uv rays.
Page on www layertec de aluminum is a good reflector of uv visible and ir ligh.