Scientists are studying the use of ultraviolet germicidal irradiation (UVGI) to detect the virus in public places and disinfect contaminated public spaces to stop the transmission of the virus.

Ultraviolet Light:

UV light from the sun 

has shorter wavelengths,

not visible to the naked eye.

UV radiation’s  classified into UV-A, UV-B and UV-C rays according to their wavelength.

The shorter the wavelength, the more harmful the UV radiation

Classification

UV-C:

Short-wavelength.

most harmful but are completely absorbed by the Earth’s atmosphere and does not reach the Earth’s surface.

UV-B:

Medium-wavelength.

Biologically active but cannot penetrate beyond the superficial skin layers.

Responsible for delayed tanning and burning.

Exposure to UV-B rays can cause DNA and cellular damage in living organisms.

UV-A:

Relatively long-wavelength.

Accounts for approximately 95% of the UV radiation reaching the Earth's surface.

DRDO’s UV Developments:  

DRDO has recently developed automated contactless UV-C devices namely DRUVS (Defence Research Ultraviolet Sanitiser)for mobile sanitize and NOTESCLEAN for currency sanitize