- Abbe : Named after Ernst Abbe(1840-1901) who had great contributions in the field of optical instruments. The unit is used to measure Linear Spatial Frequency. Its dimensins are Hz m-1.
- Amagat : Named after E. H. Amagat(1841-1915) who studied gases under high pressures. Amagat volume and Amagat density are used as measures in the study of behaviour of gases under pressure. For both units UNIT PRESSURE is taken as one standard atmosphere pressure. For an ideal gas, the Amagat volume is 22.4 litres. It is the volume occupied by one gram-mole of the gas at unit pressure and 273.15 K.
- Ampere : Named after A. M. Ampere(1775-1836) who had major contributions in the field of electricity. It is the unit of electric current.
- Angstrom : Named after A. J. Angstrom(1814-1874)who had used 10-10 m to describe wavelengths. It is a unit of length used generally at atomic levels. It is equal to 10-10 m.
- Balmer : Named after J. J. Balmer(1825-1898) who was a spectroscopist. It is a unit of wave-number and represents the number of waves in one centimeter. It has the dimensions of cm-1.
- Baud : Named after J. M. E. Boudot(1845-1903) who was a French telegraph engineer and had made the first teleprinter. It is a unit of telegraph signalling speed. One baud is equal to one pulse per second.
- Becquerel : Named after A. H. Becquerel(1852-1908),a French physicist who discovered radioactivity. It is a unit of radioactivity and 1 becquerel means one nuclear disintegration or nuclear transformation per second.
- Clausius : Named after R. J. L. Clausius(1822-1888). It is a unit of entropy.
- Coulomb : Named after C. A. Coulomb(1736-1806) who had contributed to the field of electricity as one of the pioneers. It is the unit of electric charge.
- Curie : Named after Pierre Curie(1859-1906) who was one of the discoverers of radium. It is a unit of radioactivity.
- Darcy : Named after French scientist H. Darcy(1803-1858). He investigated the flow of fluids in porous media. It is the CGS unit of permeability of porous materials.
- Einstein : Named after Albert Einstein(1879-1955). Einstein worked in the field of photoelectric effect and gave us the great 'Theory of relativity' for which world better remembers him. It is a unit of photoenergy.
- Erlang : Named after the Danish mathematician, A. K. Erlang(1879-1924). It is a telephone traffic unit used to express traffic density.
- Farad : Named after Michael Faraday(1791-1867). It is a unit of capacitance.
- Fermi : Named after E. Fermi(1901-1954) who built first atomic pile. It is a unit of distance equal to 10-15 m.
- Fresnel : Named after A.J.Fresnel(1788-1827) who was an advocate of wave theory of light. It is a unit of optical frequency (1 fresnel = 1012 Hz).
Sunday, August 31, 2008
NAMED UNITS OF MEASUREMENT
Thursday, August 28, 2008
SOME ACRONYMS
- ASEAN : Association of South East Asian Nations
- BASIC : Beginner's All-purpose Symbolic Instruction Code
- EMU : European Monetary Union
- FLOPS : FLoating-point Operations Per Second
- LED : Light Emitting Diode
- LIFFE : London International Financial Futures Exchange
- MIPS : Millions of Instructions Per Second
- OOPS : Object-Oriented Programming System
- PERT : Programme Evaluation and Review Technique
- SAD : Seasonal Affectiveness Disorder
- SALT : Strategic Arms Limitation Talks
- SAT : Standard Assessment Test
- SERPS : State Earnings-Related Pension Scheme
- SIDS : Sudden Infant Death Syndrome
- SOGAT : Society of Graphical and Allied Trades
- TINA : There Is No Alternative
- UEFA : Union of European Football Associations
- WIMP : Windows, Icons, Mouse and Printer
Sunday, August 24, 2008
JUST INTERESTING !!!
CAESAREAN BIRTH
It is said that Julius Caesar had been delivered that way.In those days in Rome if a woman was dead or dying with an unborn child in her womb,then it would be rescued by the method now known as Caesarean Section. In Latin Caedere means to cut-hence Caeser got his name after being delivered by this method and the method began to be known as Caesarean Section.
SIAMESE TWINS
Siamese Twins are twins born with their bodies joined together and in some cases having an organ common to both.Siam is the old name for Thailand.The term SIAMESE TWINS came in to use after the birth of twins Chang and Eng on May 11,1811 in Siam.In the local language their names mean "left" and "right" respectively.
COCKTAIL
- ALBION is the poetic name for Britain or England.
- Male mosquitos never bite us because they do not possess the mechanism to bite...!!!
- In Downing Street there are three important houses. In house no. 10 the Prime minister of UK leaves.House no. 11 is for the chancellor and house no. 12 operates as an
office as well as the house for the Chief Whip of the government.What about no. 1 to 9 ? Actually the street has only three houses and houses with no. 1 to 9 do not exist.!!! - Bombay duck is not a duck; it is a small, thin,almost transparent lizardfish.
- The name-CHOP SUEY is Chinese; The dish is pure American.
Thursday, August 21, 2008
AMERICA'S FIRST LADY OF SPACE
Two female monkeys, Able (a rhesus monkey) and Baker (a squirrel monkey) were sent to space on 28 May, 1959. They were the first animals to survive a 480 km high suborbital flight. A few days later, after returning to earth, Able (better known as Miss Able) died but Baker (of course, Miss Baker) survived and became known as AMERICA'S FIRST LADY OF SPACE. She died on 28 Nov 1984 due to kidney failure.
Tuesday, August 19, 2008
MATHEMATICAL WONDER !!!
India's Ramanujan was a genius personality in mathematics though he did not get proper education in an organised manner. He had discovered a surprising and funny fact about 'cubes of numbers'.
There is only one possible case
in which one can equate the sum of cubes
of two different positive integers
with the sum of cubes of two
altogether different positive integers.
There is no other such case known till now.
The sum of cube of 1 and cube of 12
is equal to the sum of cube of 9 and cube of 10.
The sum is 1729 for both.
Try to find out if there be any
possibility by which you can relate
four different positive integers
in the similar fashion.
Subscribe to:
Posts (Atom)