Sunday, October 24, 2010

Aurora

God's spectacular display of light and color, Aurora - also called the northern or southern lights - usually occur in the nighttime in the polar regions. Lights that can be see in the northern hemisphere are called the Aurora Borealis while the southern lights are called the Aurora Australis. Though the aurora can be seen throughout the year, the greatest chances to experience this celestial show is during the months of March, April, September and October.

Shot Wave Diathermy (SWD)


The applications of physics in the treatment using physiotherapy techniques are in numerous in number.  The treatment methodology is so easy and doesn't cause any pain to the patients. All equipment that is used in treatment has an underlying impact of the principle of physics.
The medical use of high frequency electrical currents has been traced back to 1892. In the same year in ParisDARSONVAL passed a one ampere current at high frequency to himself. The similar amounts of electricity at low frequencies were known to be potentially fatal but high frequency gives a sensation of warmth. Subsequent work on high frequency current led to the development of inductive and capacitive methods to produce non-superficial heating. The method came to be known as “Diathermy” from the Greek meaning“Through Heating”.
A short diathermy current has a frequency of between 107 and 108 Hz and setup radio waves with a wavelength of between 30m and 3m. The use of any current within this range is called as “Short Wave Diathermy”, but that commonly used for medical work has a frequency of 27120000 Hz (27.12 MHz) and setup a radio wave with a wavelength of 11m. This current is generated in a machine circuit, which in turn is coupled to a patient (resonator) circuit, which is used to treat the patient, provide a suitable method of application is chosen. Shot Wave Diathermy provides as deep a form of heat as any available to the physiotherapist. It uses high frequency current for its usage.
Among the different equipment available for the treatment, the SWD device, though, a little bulky, has the blessing of quicker recovery of the patients. The reports of the case study indicate that SWD is the best method of treating the back pain, pain in motor region etc.
In the modern world, the treatment through physiotherapy is gaining importance. If the devices used for treating physiotherapy cases were designed in such a way that they support portability and make use of the many technological revolutions, based on principles of physics, the field of physiotherapy will grow rapidly and the percentage of recovery of the patients would also go high. These devices are useful to treat the problems of common people at low cost. By improving the techniques further, it will be possible to cure many complicated and chronic diseases effectively at low cost.

The Nobel Prize in Physics

1901
Wilhelm C. Röntgen
Germany
1902
Hendrik A. Lorentz
Pieter Zeeman
Netherlands
Netherlands
1903
Antoine Henri Becquerel
Pierre Curie
Marie Curie
France
France
Poland-France
1904
John W. Strutt
Great Britain
1905
Philipp E. A. von Lenard
Germany
1906
Sir Joseph J. Thomson
Great Britain
1907
Albert A. Michelson
United States
1908
Gabriel Lippmann
France
1909
Carl F. Braun
Guglielmo Marconi
Germany
Italy
1910
Johannes D. van der Waals
Netherlands
1911
Wilhelm Wien
Germany
1912
Nils G. Dalen
Sweden
1913
Heike Kamerlingh Onnes
Netherlands
1914
Max von Laue
Germany
1915
Sir William H. Bragg
Sir William L. Bragg
Great Britain
Great Britain
1916


1917
Charles G. Barkla
Great Britain
1918
Max K. E. L. Planck
Germany
1919
Johannes Stark
Germany
1920
Charles E. Guillaume
France
1921
Germany-United States
1922
Niels Bohr
Denmark
1923
Robert A. Millikan
United States
1924
Karl M. G. Siegbahn
Sweden
1925
James Franck
Gustav Hertz
Germany
Germany
1926
Jean B. Perrin
France
1927
Arthur H. Compton
Charles T. R. Wilson
United States
Great Britain
1928
Owen W. Richardson
Great Britain
1929
Prince Louis-Victor de Broglie
France
1930
Sir Chandrasekhara V. Raman
India
1931


1932
Werner Heisenberg
Germany
1933
Paul A. M. Dirac
Erwin Schrodinger
Great Britain
Austria
1934


1935
Sir James Chadwick
Great Britain
1936
Carl D. Anderson
Victor F. Hess
United States
Austria
1937
Clinton J. Davisson
Sir George P. Thomson
United States
Great Britain
1938
Enrico Fermi
Italy-United States
1939
Ernest O. Lawrence
United States
1940


1941


1942


1943
Otto Stern
United States
1944
Isidor Isaac Rabi
United States
1945
Wolfgang Pauli
United States
1946
Percy W. Bridgman
United States
1947
Sir Edward V. Appleton
Great Britain
1948
Patrick M. S. Blackett
Great Britain
1949
Hideki Yukawa
Japan
1950
Cecil F. Powell
Great Britain
1951
Sir John D. Cockroft
Ernest T. S. Walton
Great Britain
Ireland
1952
Felix Bloch
Edward M. Purcell
United States
United States
1953
Frits Zernike
Netherlands
1954
Max Born
Walter Bothe
Great Britain
Germany
1955
Polykarp Kusch
Willis E. Lamb
United States
United States
1956
John Bardeen
Walter H. Brattain
William Shockley
United States
United States
United States
1957
Tsung-dao Lee
Chen Ning Yang
United States
United States
1958
Pavel Cherenkov
Ilya Frank
Igor Y. Tamm
Soviet Union
Soviet Union
Soviet Union
1959
Owen Chamberlain
Emilio G. Segrée
United States
United States
1960
Donald A. Glaser
United States
1961
Robert Hofstadter
Rudolf L. Mössbauer
United States
Germany
1962
Lev D. Landau
Soviet Union
1963
Maria Goeppert-Mayer
Eugene P. Wigner
J. Hans D. Jensen
United States
United States
Germany
1964
Nikolai G. Basov
Aleksander M. Prochorov
Charles H. Townes
Soviet Union
Soviet Union
United States
1965
Richard P. Feynman
Julian S. Schwinger
Shinichiro Tomonaga
United States
United States
Japan
1966
Alfred Kastler
France
1967
Hans A. Bethe
United States
1968
Luis W. Alvarez
United States
1969
Murray Gell-Mann
United States
1970
Louis Néel
Hannes Alfvén
France
Sweden
1971
Dennis Gabor
Great Britain
1972
John Bardeen
Leon N. Cooper
John R. Schrieffer
United States
United States
United States
1973
Ivar Giaever
Leo Esaki
Brian D. Josephson
United States
Japan
Great Britain
1974
Martin Ryle
Antony Hewish
Great Britain
Great Britain
1975
James Rainwater
Ben Mottelson
Aage Bohr
United States
United States-Denmark
Denmark
1976
Burton Richter
Samuel C. C. Ting
United States
United States
1977
John H. Van Vleck
Philip W. Anderson
Nevill F. Mott
United States
United States
Great Britain
1978
Pyotr Kapitsa
Arno Penzias
Robert Wilson
Soviet Union
United States
United States
1979
Steven Weinberg
Sheldon L. Glashow
Abdus Salam
United States
United States
Pakistan
1980
James W. Cronin
Val L. Fitch
United States
United States
1981
Nicolaas Bloembergen
Arthur Schaalow
Kai M. Siegbahn
United States
United States
Sweden
1982
Kenneth G. Wilson
United States
1983
Subrahmanyan Chandrasekhar
William A. Fowler
United States
United States
1984
Carlo Rubbia
Simon van der Meer
Italy
Netherlands
1985
Klaus von Klitzing
Germany
1986
Ernest Ruska
Gerd Binnig
Heinrich Rohrer
Germany
Germany
Switzerland
1987
K. Alex Müller
J. Georg Bednorz
Switzerland
Germany
1988
Leon M. Lederman
Melvin Schwartz
Jack Steinberger
United States
United States
United States
1989
Norman F. Ramsey
Hans G. Dehmelt
Wolfgang Paul
United States
Germany-United States

Germany
1990
Richard E. Taylor
Jerome I. Friedman
Henry W. Kendall
Canada
United States
United States
1991
Pierre-Giles de Gennes
France
1992
Georges Charpak
Poland-France
1993
Joseph H. Taylor
Russell A. Hulse
United States
United States
1994
Bertram N. Brockhouse
Clifford G. Shull
Canada
United States
1995
Martin Perl
Frederick Reines
United States
United States
1996
David M. Lee
Douglas D. Osheroff
Robert C. Richardson
United States
United States
United States
1997
Steven Chu
William D. Phillips
Claude Cohen-Tannoudji
United States
United States
France
1998
Robert B. Laughlin
Horst L. Störmer
Daniel C. Tsui
United States
United States
United States
1999
Gerardus 't Hooft
Martinus J.G. Veltman
Netherlands
Netherlands
2000
Zhores I. Alferov
Herbert Kroemer
Jack S. Kilby

THE CULTURAL AND EDUCATIONAL RIGHTS

The Cultural and Educational Rights is one of the six fundamental right that have been granted to us in the Indian Constitution. This right allow every citizen of India to have a cultural and education upto where that person wants. This fundamental right is described in the constitution as:

Any section of the citizens residing in the territory of India or any part there of having a distinct language, script or culture of its own shall have the right to conserve the same.

No citizen shall be denied admission into any educational institution maintained by the State or receiving aid out of State funds on grounds only of religion, race, caste, language or any of them.

All minorities, whether based on religion or language, shall have the right to establish and administer educational institutions of their choice.

In making any law providing for the compulsory acquisition of any property of any educational institution established and administered by a minority, referred to in clause (1), the State shall ensure that the amount fixed by or determined under such law for the acquisition of such property is such as would not restrict or abrogate the right guaranteed under that clause.

The State shall not, in granting aid to educational institutions, discriminate against any educational institution on the ground that it is under the management of a minority, whether based on religion or language.

IMPORTANT DISCOVERIES

YEAR
DISCOVERY
PHYSICIST
1750
NATURE OF LIGHTNING
FRANKLIN
1798
CAVENDISH EXPERIMENT:MEASUREMENT OF G
CAVENDISH
1800
DALTON’S ATOMIC THEORY
DALTON
1820
FRAUNHOFER LINES
FRAUNHOFER
1831
ELECTRIC DYNAMO
FARADAY
1833
WHEATSTONE BRIDGE
WHEATSTONE
1834
ELECTRIC MOTOR
JACOBI
1841
POTENTIOMETER
POGGENDORF
1842
DOPPLER EFFECT
DOPPLER
1845
ELECTROMAGNETIC THEORY OF LIGHT
JAMES CLERK MAXWELL
1847
KIRCHOFF’S LAWS OF ELECTRICITY
KIRCHOFF
1857
KINETIC THEORY
CLAUSIUS
1861
ANDREW’S EXPERIMENT WITH CO2
ANDREWS
1865
ENTROPY
CLASSIUS
1872
VANDER WAAL’S EQUATION
VANDER WAAL
1879
DETERMINATION OF VELOCITY OF LIGHT
MICHELSON
1879
CATHODE RAY TUBE
CROOKES
1882
DIFFRACTION GRATTING
ROWLAND
1885
TRANSFORMER
STANLEY
1887
WIRELESS WAVES
HERTZ
1895
X – RAYS
ROENTGEN
1896
RADIOACTIVITY
BECQUEREL
1897
CATHODE RAY OSCILLOSCOPE
BROWN
1897
MEASUREMENT OF e/m FOR THE ELECTRON
THOMSON
1898
RADIUM DISCOVERED
CURIES
1900
QUANTUM THEORY
PLANCK
1901
BLACK BODY CURVE
PLANCK
1905
THEORY OF RELATIVITY
EINSTEIN
1911
SUPERCONDUCTIVITY
HEIKE KAMARLINGH ONNES
1912
CLOUD CHAMBER
WILSON
1912
X-RAY DIFFRACTION
LAUE
1913
X-RAY SPECTROMETER
BRAGG
1925
EXCLUSION PRINCIPLE
PAULI
1929
TELEVISION TUBE
ZWORYKIN
1929
ELECTROSTATIC ACCELERATOR
COCKCROFT & WALTON
1930
QUANTUM MECHANICS
DIRAC
1931
NEUTRINO
PAULI
1932
CYCLOTRON
LAWRENCE
1932
NEUTRON
CHADWICK
1938
SUPER FLUIDITY
KAPITZA
1938
NUCLEAR FISSION
HAHN & STRASSMAN
1948
TRANSISTOR
BARDEEN, BRATTAIN & SHOCKLEY
1952
BUBBLE CHAMBER
GLASER
1955
UNIFIED FIELD THEORY
EINSTEIN
1960
RUBY LASER
THEODORE MAIMAN
1985
1000 G eV ACCELERATOR
FERMILAB
1987
4.2 m TELESCOPE
WILLIAM HERSCHEL