Biography of edwin powell hubble essay

Edwin was a gifted athlete playing baseball, football, basketball, and he ran track in both high school and college. He played a variety of positions on the basketball court from center to shooting guard. His studies at the University of Chicago were concentrated on law, which led to a bachelor of science degree in Hubble also became a member of the Kappa Sigma Fraternity.

Biography of edwin powell hubble essay

His mother, Emma Swindells, came from a local textile family. His father, Joseph James Thomson, ran an antiquarian bookshop founded by a great-grandfather. He had a brother, Frederick Vernon Thomson, who was two years younger than he was.

Thomson was a reserved yet devout Anglican. Inhe was admitted to Owens College in Manchester now University of Manchester at the unusually young age of Thomson was known for his work as a mathematician, where he was recognized as an exceptional talent.

Inhe gave the Romanes Lecture in Oxford on "The atomic theory". Inhe became Master of Trinity CollegeCambridgewhere he remained until his death. One of his students was Ernest Rutherfordwho later succeeded him as Cavendish Professor of Physics. In addition, Thomson's son George Paget Thomson won the Nobel Prize in physics for proving the wave-like properties of electrons.

Early work[ edit ] Thomson's prize-winning master's work, Treatise on the motion of vortex rings, shows his early interest in atomic structure. He examined the electromagnetic theory of light of James Clerk Maxwellintroduced the concept of electromagnetic mass of a charged particleand demonstrated that a moving charged body would apparently increase in mass.

Thomson Biography of edwin powell hubble essay presented a series of six lectures at Yale University in Thomson in was the first to suggest that one of the fundamental units was more than 1, times smaller than an atom, suggesting the subatomic particle now known as the electron.

Thomson discovered this through his explorations on the properties of cathode rays. Thomson made his suggestion on 30 April following his discovery that cathode rays at the time known as Lenard rays could travel much further through air than expected for an atom-sized particle.

His experiments suggested not only that cathode rays were over 1, times lighter than the hydrogen atom, but also that their mass was the same in whichever type of atom they came from. He concluded that the rays were composed of very light, negatively charged particles which were a universal building block of atoms.

He called the particles "corpuscles", but later scientists preferred the name electron which had been suggested by George Johnstone Stoney inprior to Thomson's actual discovery.

A month after Thomson's announcement of the corpuscle, he found that he could reliably deflect the rays by an electric field if he evacuated the discharge tube to a very low pressure. By comparing the deflection of a beam of cathode rays by electric and magnetic fields he obtained more robust measurements of the mass-to-charge ratio that confirmed his previous estimates.

Thomson believed that the corpuscles emerged from the atoms of the trace gas inside his cathode ray tubes. He thus concluded that atoms were divisible, and that the corpuscles were their building blocks.

Biography of edwin powell hubble essay

InThomson suggested a model of the atom, hypothesizing that it was a sphere of positive matter within which electrostatic forces determined the positioning of the corpuscles. In this "plum pudding" model, the electrons were seen as embedded in the positive charge like plums in a plum pudding although in Thomson's model they were not stationary, but orbiting rapidly.

Inas part of his exploration into the composition of the streams of positively charged particles then known as canal raysThomson and his research assistant F.

Aston channelled a stream of neon ions through a magnetic and an electric field and measured its deflection by placing a photographic plate in its path. Thomson's separation of neon isotopes by their mass was the first example of mass spectrometrywhich was subsequently improved and developed into a general method by F.

Aston and by A. Magnetic deflection[ edit ] Thomson first investigated the magnetic deflection of cathode rays. Cathode rays were produced in the side tube on the left of the apparatus and passed through the anode into the main bell jarwhere they were deflected by a magnet.

Thomson detected their path by the fluorescence on a squared screen in the jar. He found that whatever the material of the anode and the gas in the jar, the deflection of the rays was the same, suggesting that the rays were of the same form whatever their origin.

Thomson demonstrated that cathode rays could be deflected by a magnetic field, and that their negative charge was not a separate phenomenon.

While supporters of the aetherial theory accepted the possibility that negatively charged particles are produced in Crookes tubes ,[ citation needed ] they believed that they are a mere by-product and that the cathode rays themselves are immaterial.

Thomson constructed a Crookes tube with an electrometer set to one side, out of the direct path of the cathode rays. Thomson could trace the path of the ray by observing the phosphorescent patch it created where it hit the surface of the tube.

Thomson observed that the electrometer registered a charge only when he deflected the cathode ray to it with a magnet. He concluded that the negative charge and the rays were one and the same.Edwin Hubble, in full Edwin Powell Hubble, (born November 20, , Marshfield, Missouri, U.S.—died September 28, , San Marino, California), American astronomer who played a crucial role in establishing the field of extragalactic astronomy and is generally regarded as the leading observational cosmologist of the 20th century.

As a follow-up to Tuesday’s post about the majority-minority public schools in Oslo, the following brief account reports the latest statistics on the cultural enrichment of schools in Austria.

Vienna is the most fully enriched location, and seems to be in roughly the same situation as Oslo. Many thanks to Hermes for the translation from Essay about Edwin Hubble Biography Words | 5 Pages.

Extract of essay "Edwin Hubble"

Edwin P. Hubble was a ground-breaking American astronomer who revolutionized our knowledge of the universe and established the foundations for all of modern cosmology. At the beginning of the 20th century, most astronomers thought that our Universe was confined to the Milky Way Galaxy alone.

Astronomy Edwin Hubble Biography Essay  Edwin Hubble () Edwin Hubble was born in Marshfield, Missouri in , to an insurance executive. As . Early years. Bohr was born in Copenhagen, Denmark, on 7 October , the second of three children of Christian Bohr, a professor of physiology at the University of Copenhagen, and Ellen Adler Bohr, who came from a wealthy Danish Jewish family prominent in banking and parliamentary circles.

He had an elder sister, Jenny, and a younger brother Harald. Born in Marshfield, Missouri on November 20, , to father John Powell Hubble and mother Virginia Lee (James) Hubble, Edwin Hubble began reading science-fiction novels at a young Nov 20,

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