sir cv raman
TRANSCRIPT
NAME: K.AKHILABRANCH: ECE 1ROLL NO. :418
SUBJECT: ENJOYING EVERY DAY ENGLISH
SLC’S INSTITUTE OF ENGINEERING
AND TECHNOLOGY
Born7 November 1888(1888-11-07)Thiruvanaikoil, Tiruchirappalli, Madras Presidency, British India
Died21 November 1970(1970-11-21) (aged 82)Bangalore, Karnataka, India
Nationality Indian
Fields Physics
InstitutionsIndian Finance DepartmentIndian Association for the Cultivation of ScienceIndian Institute of Science
Alma mater Presidency College
Doctoral students G. N. Ramachandran
Known for Raman effect
Notable awards
Knight Bachelor (1929)Nobel Prize in Physics (1930)Bharat Ratna (1954)Lenin Peace Prize (1957)
Franklin medal(1941)
Knight bachelor(1929)
Molecular diffraction of light(1922)
Director of RRI(1947) named sir (1929)
Childhood & Family details….
• Story begins in a village
near Tiruchirapalli
• Born on 8 Nov.1888
• Second child of
R.Chandrasekhara Iyer
& Parvathi Ammal
Raman’s father….
• Family moved to vishakhapatnam when he was 4
• Father was a lecturer in Mrs.A.V.Narasimha Rao College
• Taught Physics, Mathematics & physical geography
Raman…an intelligent
• Father was athletic man & took active interest in sports
• Raman was not physically strong
• But was very intelligent
• Preferred to read books
Raman – A great reader
• Voracious reader
• Books were like old friends
• He was mainly influenced by 3 books
Raman’s Education….
• Completed schooling by 11 years
• Spent two years in his father’s college
• Went to Madras when he was 13
• Joined B.A. in Presidency College.
• Youngest in his class
• Unimpressive in appearance
• In his first English class Professor E.H.Eliot enquiry
• Stunned all sceptics• Stood university first
in B.A.exams
Education
• Teachers asked him to prepare for ICS
• Very prestigious exam
• Undergo a medical examination before the qualifying exam
• Civil surgeon declared him unfit to travel to England
• The only exam he failed
• He felt grateful to the man who disqualified him
B.A. to M.A……
• Joined M.A. physics
• Teachers freedom
• Attended only one lecture during the whole 2 years
• Original thinking developed
• Work on light waves
• Papers in philosophical Magazine
Education @ Marriage @ Job
• Passed M.A. in January 1907
• Stood first in the university
• Married Lokasundari• Decided to write FCS-
forerunner of IAAS• Topped the exam • Went to Calcutta to
work as AAG
IACS….
• Raman spotted IACS sign board
• Walked in to the building
• Historic moment• Performed the
legendary experiment on light
Raman’s double life…..
• Worked as a finance officer all day
• Moved to IACS and did research until night
• Papers in international journals
• Communication with physicists around world
• Gave lectures in Calcutta
• Introduced giving live demonstrations
Raman @ waves and sound
• Fascinated by waves and sound
• Carried the memory of Helmholtz’s book
• Chose to study musical instruments
• Explained the working of Ektara
Ektara to Violin….
• Took up violin for study
• First time a scientific understanding was established
• Raman’s studies on the violin were extensive
• Published a book
Mechanical violin player…
• Its working were assembled from parts brought from a cycle shop
• Did not resemble the instrument we know
• It had all the essential features of the violin
• Stretched string-resonant box-the bow-stroke length
• First mechanical violin for research
Acoustics to Optics…
• Until 1920 acoustics continued to interest him• Besides the violin, he studied the veena,
tambura, mridangam, tabla…• Interested in optics which led for discoveries…
Raman @ Calcutta University..
• Got chance to move into physics career around 1917
• Ashutosh Mookerjee offer as a Palit Professor of physics.
• Raman had to give up his job and higher income
• Problem he had to overcome
• A person who is applying must have foreign experience
• The rule was changed• Important role in
university activities
University Congress at Oxford
• In 1921 he got honorary doctorate from Calcutta University
• Went overseas for the first time
• Visit to University Congress at Oxford
• During his voyage back to India he spent hours watching the sea
• Struck by its colour
• Lord Rayleigh statement
Raman’s discovery….
• Water molecule could scatter light just like air molecules
• Important for Raman effect
• In 1922 he wrote a brilliant essay ‘The Molecular Diffraction of Light’
• He said light may exist in quanta as massless particles of energy.
K.R.Ramanathan finding the phenomenon in 1923
• Raman’s hunch• His direction towards
finding evidence for the corpuscular theory
• Discovery of the Compton effect in 1923
• Raman’s hunch was proved right
• K.R.Ramanathan spotted the phenomenon
• They named the phenomenon ‘feeble fluorescence’.
Raman @ Nobel
• It took his team 4 more years
• They were confident in 1927
• Discovery on 28th February….
• The famous Raman effect….the light can undergo a scattering through a liquid resulting in a change in its frequency….
• The date is celebrated as national science day
• Booked tickets to Europe• He had to wait 2 years• Received Nobel prize for
physics in 1930• His thought of India as a
British colony• His break down
Raman @IIS
• Took up directorship of Indian Institute of Science@ Bangalore
• He stayed there until he retired in 1948
• Equal time to research and organisational work
• Nurtured many good students
• Never had a temptation leaving the country for a better life…….
Raman from 1946 to 1970…..
• Devoted final years to set up of the Raman Research Institute in Bangalore…..
• Running of the Indian Academy of Science.
• Edited Current Science & proceedings of the Academy journals…
• Died on 21 November,1970
• Funeral at the institute campus itself.
• A solitary tree is located……
Raman @ Inspiration……
• Raman. brilliant• Raman original
thinker• Raman hardworking• Raman disciplined• Deserves to be
admired for more than these qualities
• In his youth…
– India was not free country
– No institutions
– No libraries