Heinrich Rudolf Hertz (Germany) - Generation of electromagnetic waves 8. J.C.Bose (India) - Ultra short radio waves 9. W.K.Roentgen (Germany) - X-rays 10. J.J.Thomson (U.K) - Electron 11. Marie Sklodowska Curie (Poland) - Discovery of radium & Polonium; studies on natural radio activity 12. Albert Einstein (Germany) - Explanation of photoelectric effect; Theory of relativity 13. Victor Francis Hess (Austria) - Cosmic Radiation 14. R.A.Millikan(USA) Measurement of electronic charge 15. Ernest
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Marie Curie (1867 - 1934) - She was a Polish born chemist and physicist who later acquired French citizenship. She is renowned for her discoveries in the phenomenon of radioactivity. Marie Curie discovered the radioactive elements radium and polonium for which she was awarded the Nobel Prize in Chemistry. John Dalton (1766 - 1844) - He was an English who is well-known for his discovery of atoms and the theory known as John Dalton’s atomic theory. He stated that an atom is a fundamental unit
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damaged DNA. Formaldehyde a smelly chemical used to kill bacteria‚ preserve dead bodies and manufacture other chemicals. It is one of the substances in tobacco smoke most likely to cause diseases in our lungs and airways. It causes cancer. Polonium-210 a rare‚ radioactive element which can deliver radiation directly to surrounding cells will cause cancer. Chromium a metal used to make metallic alloys‚ dyes and paints and comes in different types. It is very toxic and known to cause
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Common Elements/Uses Element Common Uses &/or Descriptions Aluminum A light metal used in making airplanes‚ buildings‚ pots and pans‚ etc. Bromine Used in photography‚ medicines‚ insecticides‚ etc. Calcium A soft‚ metallic chemical element found in limestone‚ marble‚ chalk‚ etc. Carbon Found in coal‚ oil‚ gas‚ living things‚ and inks. Chlorine Used in bleach‚ in chemical to kill germs in swimming pools‚ and found with the element sodium in table salt. Chromium A shiny metal usde on bumpers
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Who invented the periodic table? Dmitri Mendeleev invented the periodic in 1869‚ 5 years after John Newlands put forward his law of Octaves. Part of Dmitri’s periodic table He realised that the physical and chemical properties of elements were related to their atomic mass in a ’periodic’ way‚ and arranged them so that groups of elements with similar properties fell into vertical columns in his table. He also stated: The elements‚ if arranged according to their atomic mass‚ exhibit an apparent periodicity
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unknown negatively charged particle‚ and thus is credited with the discovery and identification of the electron Marie and Pierre Curie (April 1898) - Did considerable work in the investigations of radioactivity. They discovered two new elements: Polonium and Radium - the latter named for the radioactive glow visible in the dark. Ernest Rutherford (1899) - a New Zealand-born physicist and chemist who became known as the father of nuclear physics. He is credited with the discovery of the Nucleus.
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Marie Curie was a brilliant scientists whose discoveries greatly impacted the world and helped many lives. Marie Curie was extremely famous and well known for good reasons such as discovering two elements‚ radium and polonium. Even though Marie Curie had a tough early life with financial problems and unfortunate events‚ she advanced to become one of the most brilliant scientists that impacted the world tremendously. ` Known as Marie Curie‚ Maria Sklodowska was born in Warsaw‚ Poland on November 7
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1926. Her parents were politically active and worked to combat fascism and Nazism. Family-Her parents were Pierre and Marie Curie. Her father was a French physical chemist‚ he won the Nobel Prize with Marie Curie because they discovered radium and polonium during radioactivity. He was born May 15‚ 1859 in Paris‚ France and he died on April 19‚ 1906‚ in Paris. Her mother is famous for her work on radioactivity and she won the Nobel Prize twice. She was born November 7‚ 1867‚ in Warsaw‚ Congress Kingdom
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But after a few minutes‚ the swan felt that there is something like butterflies flying inside his stomach. They landed again and went to the forest of Radon. Because of flying and flying and flying‚ they just decided to stop and took a rest in Polonium‚ a beautiful mountain. After a day‚ they looked for some food in the land of Bismuth where known as the best place for having many different kinds of food. And after that‚ they flew again. It was the most exciting thing that had ever happened
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elements. Also thought all elements made of same kinds of atoms. Modern Atomic Theory John Dalton‚ 1803. Atoms of different elements are themselves of difference size and mass. More Elements Discovered Marie and Pierre Curie‚ 1898. Discovered polonium‚ radium. Concluded certain elements release energy when break down‚ called radioactivity. Medical Breakthroughs Preventing Disease Breakthroughs in late 1800s as result of scientific advances earlier in century. Fundamental concepts of
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