Physics

The Quantum Theory of Optical Coherence

The Quantum Theory of Optical Coherence In the early sixties Roy was drawn into a completely different topic. He developed the quantum theory of optical coherence and photon detection, for which he was finally awarded the Nobel Prize in 2005. In this way he laid the foundations for modern quantum.....

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Giant Magnetoresistance

GMR: Giant Magnetoresistance Since discovery in 1988 GMR has generated a lot of interest among academic and industrial laboratories due to deep fundamental physics that controls this phenomenon and tremendous technological potential for magnetic recording, storage and sensor industries. In 2007 A.....

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Causes of Astroid Belt

The asteroid belt is a area of space between the orbits of Mars and Jupiter where the majority of the asteroids in our Solar System are found orbiting the Sun. The asteroid belt possibly contains millions of asteroids. Astronomers think that the asteroid belt is made up of material that was never.....

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How Old is the Universe?

The age of the universe is approximately 13.77 billion years. This age is considered by measuring the distances and radial velocities of other galaxies, most of which are flying away from our own at speeds proportional to their distances. Using the present expansion rate of the universe, we can i.....

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Lecture on Lise Meitner

Lise Meitner (1878 – 1968) Austrian-born Swedish nuclear physicist. Born in Vienna, she worked with radiochemist, Otto Hahn. They discovered the element protactinium and studied the effects of neutron bombardment on uranium. After leaving Nazi Germany in 1938, she continued her work at the .....

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Presentation on Marie Curie

Marie Curie (1867 -1934) was a Polish-born physicist and chemist, working mainly in France, who is famous for her pioneering research on radioactivity. Not only was she the first person to win two Nobel prizes, she was the first woman to win a Noble prize. Curie’s efforts, with her husband .....

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Presentation on Max Planck

Max Karl Ernst Ludwig Planck (1858 – 1947), was a German theoretical physicist who originated quantum theory, which won him the Nobel Prize in Physics in 1918. This was not only Planck’s most important work but also marked a turning point in the history of physics. A constant (Planck’s .....

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Presentation on James Clerk Maxwell

James Clerk Maxwell (1831 – 1879) was a Scottish theoretical physicist. His theory of electromagnetism united all previously unrelated observations, experiments, and equations of electricity, magnetism, and optics into a consistent theory. Maxwell’s equations demonstrate that electricity,.....

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Lecture on John Dalton

John Dalton (1776 – 1844) was an English chemist, meteorologist and physicist. Later, Thompson, Rutherford Bohr, Schrodinger and many others contributed to our present model of the atom. While parts of Dalton’s atomic theory were correct, today’s model of the atom with electrons, protons an.....

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Presentation on Tycho Brahe

Tycho Brahe, born Tyge Ottesen Brahe, was a Danish nobleman known for his accurate and comprehensive astronomical and planetary observations. Tycho had published a widely-sold book. Modest chap that he was, he included a portrait and 16 crests showing his lineage over four generations. He died th.....

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Lecture on Johannes Kepler

Ba sic purpose of this lecture is to present on Johannes Kepler. Kepler’s laws are: Planets travel around the Sun in elliptical orbits with the Sun at one focus. A line from the planet to the Sun sweeps out equal areas in equal times. The square of a planet’s period in years and it.....

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Lecture on Nicolaus Copernicus

General purpose of this lecture is to present on Nicolaus Copernicus. He was first known modern person to propose the Earth circles the Sun. Astronomer Nicolaus Copernicus was instrumental in establishing the concept of a heliocentric solar system, in which the sun, rather than the earth, is t.....

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