Ramanujan, Srinivasa
Ayengar (Birth 22-12-1887, Tamilnadu, India;
Death 26-04-1920, Chennai, Tamilnadu,
India)
Indian mathematician whose contributions to the theory of
numbers include pioneering discoveries of the properties of
the partition function. He
worked out the Riemann series, the elliptic integrals,
hypergeometric series, the functional equations of zeta
function and his own theory of divergent series.
Born in the town of Erode in Tamilnadu Ramanujan never
had any formal education.
He worked as a clerk in Madras Port Trust. As his genius gained recognition, he began correspondence
with Godfrey Hardy, a British mathematician, that led to a
special scholarship from the University of Madras and grant
from Trinity College, Cambridge, where he conducted most of
his research. He
was elected FRS in 1918.
Raman, Sir Chandrasekhara Venkata (Birth 7.11.1888,
Tiruchirappalli, Tamilnadu, India; Death 21.11.1970, Bangalore,
Karnataka, India)
Indian physicist, who was awarded the 1930 Nobel Prize in
Physics for his work on the SCATTERING of light and for the
discovery of the effect named after him.
Raman was a professor of Physics at the University of
Calcutta where he did most of his research work.
He was knighted in 1929, and in 1933 he moved to the Indian
Institute of Science, Bangalore as Head of the Department f
Physics. In 1947,
he became Director of the RAMAN RESEARCH INSTITUTE.
In his later years, he made significant contributions
to the field of vision, hearing and the physics of Indian
musical instruments. The
day on which Sir C.V.Raman discovered the RAMAN EFFECT, that
is 28th February, is observed as National Science
Day in India. He
was elected FRS in
1924.
Chandrasekhar, Subrahmanyan
(Birth 19.10.1910, Madras, India; Death 1995)
Indian-born American theoretical physicist who shared the 1983
Nobel Prize in Physics with William Alfred FOWLER for
theoretical studies of the physical processes relevant to the
structure and evolution of the stars.
He is best known for what was later known as
“Chandrasekhar Limit”.
His postulate imposes a restriction on the size of a
highly dense variety of star known as WHITE DWARE.
If this type of star has mass in excess of the limit
– which is 1.44 times the mass of the sun – it becomes
unstable and explodes to become a very bright star, called
SUPERNOVA. He has
also worked on black holes.
Abdul Kalam, Avul Apkir jainulabdeen (Birth 15.10.1931, Rameshwaram in
Madras, now in Tamilnadu, India)
Former President of India, Dr.A.P.J.Abdul Kalam has worked as Scientific Adviser to the
Defence Minister and Secretary, Department of Defence Research
and Development. Specialized
in Aero Engineering at the Madras Institute of Technology.
His work on the SLV-III, India’s first satellite
launch vehicle, and the Guided Missile programme has made him
India’s most honoured scientist and provided the foundation
for the design and development of high-technology aerospace
projects. Also a
participant in the nuclear programme.
Dr.Kalam is a firm believer in the use of technology as
a tool for national development and ;he is enlisting partners
in the endeavour. He
is the recipient of numerous awards including the National
Defence Award, the Dr.Biren Roy Space Award, and the Om
Prakash Bhasin Award among others.
He is also the recipient of the country’s three
highest civilian honours: the padma Bhushan in 1981, the Padma
Vibhushan in 1990, and the Bharat Ratna in 1997.
|
Home