Current Affairs

Prepare IAS Coaching

Current Affairs

Title : UV-C Technology

Date : Nov 22, 2021

Description :



Topic à Scientific Inventions relating to Bio-Conservation, Environmental Conservation.


  • Context:


  • One of the most effective methods for disinfecting water is UV-C water purification. Special "germicidal" UV-C lamps that emit high-intensity ultraviolet light purify the water without the use of harsh chemicals that are damaging to the environment are used in this procedure.


  • What is UV radiation and how does it work:


  • The region of the electromagnetic spectrum between X-rays and visible light is known as UV radiation

Sunlight is the most prevalent source of UV radiation, which emits three types of UV rays:


  • Some important facts:


  • UVA photons have the longest wavelengths, whereas UVB and UVC rays have the shortest.
  • While UVA and UVB rays pass through the atmosphere, the Earth's ozone layer absorbs all UVC and some UVB rays. As a result, the majority of UV rays you encounter are UVA, with a tiny proportion of UVB.


  • What is the purpose of it:


  • UV rays are commonly employed to kill bacteria and other microbes.
  • UV-C, commonly known as ultraviolet germicidal irradiation (UVGI), is a disinfection treatment that kills or inactivates bacteria by destroying their nucleic acids and altering their DNA, rendering them unable to perform important biological tasks and stopping their replication.
  • UVGI is used in a range of disinfection applications, including food, air, and water.


  • Is it suitable for human consumption:


  • The device was created exclusively to sterilise non-living objects, according to the researchers. As a result, the UV-C radiation employed in this device could be damaging to living beings' skin and eyes.


  • Prelims Hot-Link:


Tags : UV Technology, water purification

Subscribe Daily newsletter