Curie And Curie 's Law

Law of definite proportion, sometimes called Proust’s law, states that a compound always has exactly the same proportion of elements by mass. This means that contents of a compound does not depend on its source or its method of preparation.

When Henri Becquerel discovered radioactivity in 1896, it inspired Marie and Pierre to investigate it further. They researched a lot of substances for any signs of radioactivity, and discovered something that was more radioactive than uranium. They discovered radium, an element that damaged tissue, so they used that to fight against cancer. “They found that the mineral pitchblende was more radioactive than uranium and concluded that it must contain other radioactive substances. From it they managed to extract two previously unknown elements, polonium and radium, both more radioactive than uranium” (Nobel Media). These discoveries led to radium being used to treat cancer and other diseases, and them getting their first Nobel Prize in Physics in 1903. After Pierre passed away, she continued with her own studies. Marie successfully isolated radium and proved its existence. She also studied the properties and compounds of these radioactive elements. “She also documented the properties of the radioactive elements and their compounds. Radioactive compounds became important as sources of radiation in both scientific experiments and in the field of medicine, where they are used to treat tumors” (Nobel Media). This discovery led to the further development of X-rays and her receiving her second Nobel Prize in Chemistry in 1911. Marie Curie was the first woman ever to win two Nobel Prizes in two fields and in multiple sciences, two incredible

Hypothesis: If we use these materials and use magnets, water, burners, and filters on the mixtures and elements given we should determine what kind of effect these materials given will have on these mixtures and elements, physical or chemical.

-Henry Gwyn Jeffreys Moseley- Worked with Ernest Rutherford, experimented with 38 metals, he found that the positive charge of each element’s nucleus increased by one from element to element as they were arranged in Mendeleev’s periodic table, lead to modern definition of atomic number (# of protons in atom’s nucleus) and the recognition the

20. Because the magnetic force which deflects the electrons is defined by F = q * v x B

Boyle’s Law was published by Irish scientist Robert Byles who discovered the law from acquaintance Richard Towneley who discovered it from family friend Henry Powers who discovered that PV=k. Charles Law was discovered by Jacques Charles who discover that V/T =k and Avogadro's Law was discovered by Amedeo Avogadro who discovered that V/n=k. Finally, Joseph Louis Gay-Lussac published in 1808 that P/T=k. And as a result, these Laws were all able to be combined into a single unified equation,

In part II, the ΔH°f of Mg was determined by a similar procedure used in part I, where Hess’s Law was first used to add the

Marie and Pierre Curie both researched into radium’s properties and the results implied that radium could possibly be a cure to some diseases. From this, a new form of therapy developed: radium therapy or “Curie Therapy,” as it was referred to in France (Koestler-Grack “Cures Cancer”). The healing properties of radium are serviceable to the curing of diseases. Many suffered from incurable diseases, such as types of Leukemia and Carcinoma, but radium treatment gave them hope for a cure. Now, many diseases that were burdensome to treat in the past are of little to no consequence due to the innovation of treatment from radium

Q11. Marie curie took many leads in the world of science, one of them being; she won 2 Nobel Prizes in her lifetime and had a high place of honor in French history. Her study of radium was especially important, helping to change preconceived ideas as to how radioactivity worked. Even though she had opened maybe one of the largest Pandora’s Box and unleashed mortal danger to the world.

The law of conservation of energy states that the total amount of energy in a closed off system remains the same. Using previous scientists work, I assumed a relationship between heat, magnetism, mechanics, electricity, and light by treating them all as forms of energy. I published my theories in my book "On the Conservation of Force".

Louis vesso king proposed kings law, by mathematically describing heat transfer and flows using a heated wire, he calls it hot-wire anemometer. By king’s law, heating current request to maintain the constant temperature differential between

Additionally, not only did the book include information about Marie Curie and the people of her surroundings, but the scientific elements she worked with, such as Radon. “Radon is a gaseous element....” (Pasachoff, 86). This allowed me to flourish my knowledge for a subject that I’m interested in and to learn about someone who I admire.

One important contribution that Antoine Lavoisier made to chemistry was the conservation of mass. In France, the law of conservation of mass is commonly referred to as Lavoisier’s Law showing the lasting impression that he made on the world of chemistry (Donovan, 2017). The law, in its entirety, envelopes the ideas that matter can be transformed from one form to another, mixtures can be separated or developed, and pure substances can be broken down, but the mass will always remain constant (World of Chemicals, 2017). The law was first identified in the Traité élémentaire de Chimie, a book that incorporated the foundations of modern chemistry in 1789 (American Chemical Society, 1999). Originally, the law of conservation of mass was an assumption

The Drude model can explain the Thermal Conductivity in metals and Electrical Conductivity of metals.

In the early 1900's a duch physicist by the name of Heike Kammerlingh Onnes (pictured above), discovered superconductivity. Before his discovery, Onnes had spent most of his scientific career studying extreme cold. The first step he took toward superconductivity was on July 10, 1908 when he liquified helium and cooled it to an astonishing 4 K, which is roughly the temperature of the background radiation in open space. Using this liquid helium, Onnes began experimenting with other materials and their properties when subjected to intense cold. In 1911, he began his research on the electrical properties of these same materials. It was known to Onnes that as materials, particularly metals, cooled, they exhibited less and less resistance. Bringing a mercury wire to as close to absolute zero as possible, Onnes observed that as the temperature dropped, so to did the resistance, until 4.2 K was reached. There resistance vanished and current flowed through the wire unhindered. Below is an approximate graph displaying resistance as a function of temperature for the experiment Onnes conducted with mercury: