ON LINE LEARNING: National Science Day 2022 IN JNV KUNDESHWAR TIKAMGARH

CLASS IX, X , XI , XII , NEET and JEE

National Science Day 2022

The theme of National Science Day 2022 is 'Integrated Approach in Science and Technology for a Sustainable Future'.

Every year, February 28 is observed as the National Science Day. This day holds a special place in history. On this day, India's greatest scientist came up with his historic invention 'Raman Effect.' He even won the Nobel Prize for his discovery. From that day, February 28 is observed to mark the great discovery of CV Raman

THEME This year, the theme for National Science Day 2021 is "Future of STI: Impacts on Education, Skills, and Work"

The theme of National Science Day 2022 is 'Integrated Approach in Science and Technology for a Sustainable Future'.

Objective

The objective of this day is to motivate the students to try their hands in the field of science.

Dr. CV Raman was a renowned scientist and he was born on November 7, 1888, in Tamil Nadu. He did his bachelors' and masters' in Physics from the Presidency College in Madras. He also got a government job, but even after that, he participated in many science competitions. Later, he got a scholarship from the government of India for his role in the field of science.

Raman Effect The Raman effect is also known as Raman scattering. In this, the wavelength of the light scatters when the light is deflected on a particular object. The Raman effect was discovered in the 19th century and was named after the great scientist CV Raman. The prominent scientist was also awarded the Nobel prize for his discovery in the year 1930

The violet light of the solar spectrum is isolated with a violet filter and passed through the liquid sample. Most of the light emerging from the liquid sample is the same color as the incident violet beam: the so-called Rayleigh scattered light. However, Raman and K. S. Krishnan were able to show that some of the scattered light was a different color, which they could isolate by using a green filter placed between the observer and the sample. The advantage of using a visual observation is that several substances can be studied quickly. In his first report to Nature, titled "A New Type of Secondary Radiation," Raman indicated that approximately 60 different liquids had been studied, and all showed the same result — some scattered light had a different color than the incident light. "It is thus," Raman said, "a phenomenon whose universal nature has to be recognized

APPLICATION - The new Raman spectroscopy has been used to monitor manufacturing processes in the petrochemical and pharmaceutical industries. Illegal drugs captured at a crime scene can be analyzed rapidly without breaking the evidence seal on the plastic bag. Chemists can watch paint dry and understand what reactions are occurring as the paint hardens. Using a fiber-optic probe, they can analyze nuclear waste material from a safe distance. Photochemists and photobiologists are using laser Raman techniques to record the spectra of transient chemical species with lifetimes as small as 10^-11 seconds. Surface-enhanced Raman spectroscopy is used for studying surfaces and reactions on surfaces. And, according to Kathy Kincade, Raman spectroscopy "has the ability to provide specific biochemical information that may foreshadow the onset of cancer and other life-threatening illnesses."

CELEBRATION OF NATIONAL SCIENCE DAY IN JNV KUNDESHWAR TIKAMGARH