National Science Day (NSD) 2023

Share with Your Friends

National Science Day (NSD) 2023

National Science Day (NSD) 2023 has been celebrated across the country on 28 February. National Science Day is being celebrated every year since 1986.

  • The theme of National Science Day, 2023 is “Global Science for Global Wellbeing”.
  • It may be noted that in the year 1928, on February 28 itself, Nobel laureate physicist CV Raman had announced the discovery of the Raman effect.
  • The Raman effect is also called Raman scattering. He received the Nobel Prize in Physics in 1930.
  • He was awarded the Bharat Ratna, India’s highest civilian honour, in the year 1954. He was the first Asian and the first black person to receive the Nobel Prize in Science.
  • The Raman’s effect refers to the change in wavelength of light. This change occurs after the light beam is deflected by the molecules.
  • When a ray of light passes through a dust-free and transparent medium of a chemical compound, a small fraction of the light is scattered in directions other than the direct direction of the incoming (incident) ray.
  • The majority of this scattered light is of unchanged wavelength. However, a small portion has a wavelength different from that of the incident light. This is due to the Raman effect phenomenon.

Importance of Raman effect-

  • Raman spectroscopy is used to identify and analyze the chemical composition of a substance.
  • This is important for quantum theory.
  • It is used in remote sensing and planetary exploration.

Other Contributions of C.V. Raman:

  • The Indian Journal of Physics was started in 1926.
  • The Raman Research Institute was established in Bangalore in 1948.

Source – PIB

Download Our App

More Current Affairs

Was this article helpful?
YesNo

Leave a Comment

Click to Join Our Current Affairs WhatsApp Group

Join Our Whatsapp Group For Daily, Weekly, Monthly Current Affairs Compilation & Daily Mains Answer Writing Test & Current Affairs MCQ

In Our Current Affairs WhatsApp Group you will get daily Mains Answer Writing Question PDF and Word File, Daily Current Affairs PDF and So Much More in Free So Join Now

Register For Latest Notification

Register Yourself For Latest Current Affairs

March 2023
M T W T F S S
« Feb    
 12345
6789101112
13141516171819
20212223242526
2728293031  

Mains Answer Writing Practice

Recent Current Affairs (English)

Current Affairs (हिन्दी)

Subscribe Our Youtube Channel

Register now

Get Free Counselling Session with mentor

Download App

Get Youth Pathshala App For Free

Hi, there

Welcome to Youth Destination IAS

We have a perfect gift For you:
Open Access to the Youth Destination Library

THANK YOU