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.
Uvc light doesnt reflect off of walls.
Between 25 and 50.
Uv c or uvc is often referred to as germicidal uv.
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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.
Here s an easy mnemonic.
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.
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First what reflects the light whether it is uv visible or ir wavelength is the metal coating on the mirror.
Uv c light lamp bulb with 5ft cord and plug 110v uvc ozone 6w ozone lamp 4 2 out of 5 stars 196.
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.
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.
The reflectivity of various metals is indicated here.
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.
But what surprised me was the level of uv that was reflected.
Uv c works only line of sight.
So far what i ve found is that surfaces that reflect visible light well do the opposite for uv rays.
Additionally uv c does not reflect off any surface.
They reflect uv rays poorly.
The technology was put to use in the early 1900s in europe for water purification and is still used today.
How can ultraviolet light kill germs.
Ultraviolet uv c is a part of the electromagnetic spectrum between visible light and x rays in wavelength and energy.
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I think we all realise that uv reflects off water especially those who enjoy a bit of.
So here we have from long wave radiation low energ.
Ultraviolet light in this wavelength renders the organisms sterile.
