List of Scientists and their Discoveries PDF

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List of Scientists and their Discoveries PDF Summary

Dear Users, today we are here to share the List of Scientists and their Discoveries PDF. All the scientists had a great contribution towards the development of our societal standards  and technological enhancement. The details of some of the Scientists are given below:

List of Scientists and their Discoveries PDF

Albert Einstein: The Whole Package

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Albert Einstein (Credit: Mark Marturello)
Einstein expanded on relativity in 1916 with his theory of gravitation: general relativity. It holds that anything with mass distorts the fabric of space and time, just as a bowling ball placed on a bed causes the mattress to sag. During a solar eclipse in 1919, astronomers showed that the sun’s mass did indeed bend the path of starlight. (The temporary darkness around the sun enabled astronomers to chronicle the bending.) The validation made Einstein a superstar.

Two years later, Einstein won the Nobel Prize in Physics, not for general relativity, but for his discovery of the photoelectric effect. By this time, the 42-year-old physicist had made most of his major contributions to science.

In 1933, Einstein accepted a professorship at the Institute for Advanced Study in Princeton, N.J., where for years he tried (unsuccessfully) to unify the laws of physics. He became a U.S. citizen in 1940, and his fame grew as a public intellectual, civil rights supporter and pacifist.

Einstein, who died of heart failure in 1955, would have applauded such bold, imaginative thinking. His greatest insights came not from careful experimental analysis, but simply considering what would happen under certain circumstances, and letting his mind play with the possibilities. “I am enough of an artist to draw freely upon my imagination,” he said in a Saturday Evening Post interview. “Knowledge is limited. Imagination encircles the world.” — Mark Barna


Marie Curie: She Went Her Own Way

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Marie Curie (Credit: Mark Marturello)
Despite her French name, Marie Curie’s story didn’t start in France. Her road to Paris and success was a hard one, as equally worthy of admiration as her scientific accomplishments.

At the University of Paris, Curie was inspired by French physicist Henri Becquerel. In 1896, he discovered that uranium emitted something that looked an awful lot like — but not quite the same as — X-rays, which had been discovered only the year before. Intrigued, Curie decided to explore uranium and its mysterious rays as a Ph.D. thesis topic.

Around the same time, Curie met and married her French husband, Pierre, an accomplished physicist who abandoned his own work and joined his wife’s research. The two started examining minerals containing uranium and pitchblende, a uranium-rich ore, and realized the latter was four times more radioactive than pure uranium. They reasoned some other element must be in the mix, sending those radioactive levels through the roof. And they were right: After processing literally tons of pitchblende, they discovered a new element and named it polonium, after Marie’s native Poland.

They published a paper in July 1898, revealing the find. And just five months later, they announced their discovery of yet another element, radium, found in trace amounts in uranium ore.

In 1903, Curie, her husband and Becquerel won the Nobel Prize in Physics for their work on radioactivity, making Curie the first woman to win a Nobel.


Isaac Newton: The Man Who Defined Science on a Be

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Isaac Newton (Credit: Mark Marturello)

Isaac Newton was born on Christmas Day, 1642. Never the humble sort, he would have found the date apt: The gift to humanity and science had arrived. A sickly infant, his mere survival was an achievement. Just 23 years later, with his alma mater Cambridge University and much of England closed due to plague, Newton discovered the laws that now bear his name. (He had to invent a new kind of math along the way: calculus.) 

Halley persuaded Newton to publish his calculations, and the results were the Philosophiæ Naturalis Principia Mathematica, or just the Principia, in 1687. Not only did it describe for the first time how the planets moved through space and how projectiles on Earth traveled through the air; the Principia showed that the same fundamental force, gravity, governs both. 


Charles Darwin: Delivering the Evolutionary Gospel

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Charles Darwin (Credit: Mark Marturello)
Charles Darwin would not have been anyone’s first guess for a revolutionary scientist. As a young man, his main interests were collecting beetles and studying geology in the countryside, occasionally skipping out on his classes at the University of Edinburgh Medical School to do so. It was a chance invitation in 1831 to join a journey around the world that would make Darwin, who had once studied to become a country parson, the father of evolutionary biology.

Darwin’s observations pushed him to a disturbing realization — the Victorian-era theories of animal origins were all wrong. Most people in Darwin’s time still adhered to creationism, the idea that a divine being was responsible for the diversity of life we find on Earth.

Darwin’s observations implied a completely different process. He noticed small differences between members of the same species that seemed to depend upon where they lived. The finches of the Galapagos are the best-known example: From island to island, finches of the same species possessed differently shaped beaks, each adapted to the unique sources of food available on each island.


Nikola Tesla: Wizard of the Industrial Revolution

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Nikola Tesla (Credit: Mark Marturello)

Nikola Tesla grips his hat in his hand. He points his cane toward Niagara Falls and beckons bystanders to turn their gaze to the future. This bronze Tesla — a statue on the Canadian side — stands atop an induction motor, the type of engine that drove the first hydroelectric power plant.

We owe much of our modern electrified life to the lab experiments of the Serbian-American engineer, born in 1856 in what’s now Croatia. His designs advanced alternating current at the start of the electric age and allowed utilities to send current over vast distances, powering American homes across the country. He developed the Tesla coil — a high-voltage transformer — and techniques to transmit power wirelessly. Cellphone makers (and others) are just now utilizing the potential of this idea.

Tesla is perhaps best known for his eccentric genius. He once proposed a system of towers that he believed could pull energy from the environment and transmit signals and electricity around the world, wirelessly. But his theories were unsound, and the project was never completed. He also claimed he had invented a “death ray.”

Galileo Galilei: Discoverer of the Cosmos

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Galileo Galilei (Credit: Mark Marturello)

Around Dec. 1, 1609, Italian mathematician Galileo Galilei pointed a telescope at the moon and created modern astronomy. His subsequent observations turned up four satellites — massive moons — orbiting Jupiter, and showed that the Milky Way’s murky light shines from many dim stars. Galileo also found sunspots upon the surface of our star and discovered the phases of Venus, which confirmed that the planet circles the sun inside Earth’s own orbit.

“I give infinite thanks to God, who has been pleased to make me the first observer of marvelous things,” he wrote.

The 45-year-old Galileo didn’t invent the telescope, and he wasn’t the first to point one at the sky. But his conclusions changed history. Galileo knew he’d found proof for the theories of Polish astronomer Nicolaus Copernicus (1473-1543), who had launched the Scientific Revolution with his sun-centered solar system model.

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