NATIONAL
SCIENCE DAY – SCI & TECH
News:
National Science Day
2024: Date, history and significance of the day
What's
in the news?
●
The special day is observed on February 28
to commemorate the discovery of the
Raman Effect by Indian Scientist CV Raman.
National
Science Day (NSD):
●
It is celebrated every year on February 28 to mark the contributions of scientists
towards the development of the country.
●
On this day, in 1928, Indian Physicists
Sir CV Raman made an important discovery in the field of spectroscopy, which
was later named after him - the Raman Effect.
●
For this discovery, he was also awarded
the Nobel Prize in Physics in 1930.
Backdrop:
●
The National Council for Science and
Technology Communication (NCSTC), in 1986, asked the Government of India to
announce February 28 as National Science Day.
●
The government accepted and declared the
day National Science Day.
●
The first National Science Day was
celebrated on February 28, 1987.
Nodal
Ministry
- Ministry
of Science and Technology
Theme
of 2024 -
"Indigenous Technologies for Viksit Bharat".
Significance
of the Theme:
●
It highlights the achievements and
potential of homegrown innovations across sectors such as aerospace, defence,
healthcare, agriculture and information technology.
●
Celebrating
indigenous technologies promotes national pride, economic
growth, job creation and technological self-sufficiency.
Go back to basics:
Raman
Effect:
●
Some part of the light beam after passing
through a transparent medium gets scattered.
●
This phenomenon of scattering of light is
termed as Raman Scattering and the
cause of scattering is called the Raman Effect.
●
The wavelength
of these scattered rays is different
from that of the incident rays of light.
In the Raman effect, when light is scattered off an
object, say a molecule, two bands are observed, with higher and lower frequency
than the original light, called the Stokes
and anti-Stokes bands, respectively