Niobium Vs Columbite

Lise Meitner is one of the most revolutionary women in science. She was a physicist and was most well known for being one of the first to discover nuclear fission. Her discoveries led to atomic weapons, which later helped the United States during World War II. Her research made her one of the most important women in the field of nuclear physics. However, she was not given proper recognition for her ground-breaking discovery at the time. During the 1940’s women in the field of science faced innumerable types of oppression. From toxic stigma to little job opportunity. All of the drawbacks women faced let many with little opportunity for advancement.

Their have been medical advances ever since the study of medicine began in 460 BCE, continuing on that pattern, the Victorian Era included many advances as well. Medical advances have been happening for a long time and will continue to happen. Just three years ago, scientists revived DNA from a wooly mammoth (Medical Advances Timeline). I’m sure at the time, the developments in the Victorian Era were just as amazing. Doctors influenced medicine in the Victorian Era by coming up with the germ theory, creating doctor specialists, and developing more technologically advanced equipment.

The early development of the Periodic Law or table was found by many contributions from a variety of scientists. The contributions led to the discovery and establishment of the Periodic Table. Which help create the Periodic Table we use as of today. The person who created the Periodic Table was a chemist named Dmitri Mendeleev, but not without the help of a few other scientist who helped him get the idea by passing down information they had found. Mendeleev discovered the Periodic Table by trying to organize the elements. He was writing the properties of the elements and arranging them. Until he realized, that by putting them in order of increasing atomic weight the next certain types of elements regularly occurred. The other person that helped develop the Periodic Table was Antoine

According to Lee A. Groat, the name “gemstone” was first coined by the jeweler Tiffany & Co. in 1969. In America, jewelry is an extensively purchased product. Americans buy jewelry for birthdays, weddings, religious ceremonies, graduations, and even sporting events such as the Super Bowl. However, the jewels contained in numerous pieces of jewelry are highly valuable due to their rarity. The article, “Gemstones” by the author, Lee A. Groat, explores why gems are so rare and why the gems are important to scientists particularly.

Is gunpowder one of the most influential parts that changed warfare? Warfare has changed a lot through the years gunpowder was able to change right along with it, they kept creating new weapons to adapt to the new style of warfare. There are many different things that changed warfare throughout our history, however gunpowder was one of the most effective and deadliest one.

Neon was discovered by Sir William Ramsay, a Scottish chemist, and Morris M. Travers, an English chemist, shortly after their discovery of Krypton. Like krypton, neon was discovered through the study of liquefied air. Although neon is the fourth most abundant element in the universe, only 0.0018% of the earth’s atmosphere is made up of neon. Sir William Ramsay and Morris M. Travers discovered this element in 1989 after Krypton. Neon got its name from the Greek word “neos,” which means new because it was newly discovered by Sir WIlliam Ramsay and one of his students Morris M.

The most important invention on this document is the discovery of quinine from cinchona tree bark. This is because, as the document says, this was used as a treatment for the disease malaria, which prevented much of the population from developing this deadly disease. Also, the document states that this discovery was made in 1820, near the beginning and middle of the war, and this therefore increased their man-power in the war effort, giving them an advantage that allowed them to colonize Africa.

1808, Humphry Davy at the Royal Instiution in London was using the process of smelting with carbon, and produced the electrolysis of Barium Hydroxide.

What is something that almost everyone in the world uses every single day? Electricity. We use electricity 24/7 whether we are using our phones, watching television, or using a light. This is something that we probably all take for granted for the most part. Where did electricity even come from? Who discovered it? How did they discover it? It was not Thomas Jefferson and it was not George Washington, so who was it?

These were Atomic physicists (OI ). For example, Robert Boyle suggested that the smallest chemical elements were the simplest forms of matter (Doc. 1). Also, ancient, greek philosophers Leucippus and Democritus were the first to discover atoms. Many others were devoted to the study of atoms, and gave many ideas of what atoms were. Also, due to the study of atoms, a scientist named Henri Becquerel stumbled upon radioactivity. Dmitri Mendeleyev brandished a new way to organize the Periodic Table. Therefore, the study of atoms is what brought many things that help us

Lyme disease is a rapidly growing vector-borne disease that spans North America (Edlow, 2012). This disease has an established and well-researched causal agent and epidemiology. Both of these aspects will be discussed in detail below. This disease has a huge impact on the population of North America, with reports of 20,000 diagnosed patients in 2011 (Elbaum-Garfinkle, 2011) and an estimated 300,000 people affected annually by 2013 (Berger et al., 2013). This disease has been recognized since 1975, and has continued to grow in incidence and impact since its initial discovery.

There were several scientific breakthroughs in the late nineteenth century that changed the history of events for years to come. Ernest Rutherford preformed the Gold Foil Experiment in 1899. There were three discoveries/models that had an impact on this experiment. First, was when J.J. Thompson discovered electrons in cathode rays and his plum pudding model. Second, was Wilhelm Conrad Röntgen discovery of x-rays. Lastly, is the model of an atom by Niehls Bohr. Each of these scientific had a factor in the creation of the Gold Foil Experiment. Rutherford preformed the experiment in 1899, when the atom was just a nucleolus and nothing else like electrons, protons, or neutrons.

Chlorine combines with almost every single element, so it cannot be found in nature alone. It was first made by a Swedish chemist Carl Wilhelm Scheele in 1774. This happened when Scheele treated muriatic acid, or hydrochloric acid, with manganese dioxide. (Stwertka 69-70) Scheele mistakenly thought that it contained oxygen. The discovery was made in Uppsala, Sweden. Later in 1810, Sir Humphry Davy made the decision that Chlorine was in fact a chemical element. He gave it the name “Chlorine” from the Greek word “chloro” meaning greenish-yellow. (Appelman 516)

Gunpowder originated in China where someone accidentally mixed three kitchen ingredients (KNO3, sulfur and charcoal) which when heated the black powder burned with a loud bang. Scientists began to better this powder which they put in a bamboo shoot and threw in a fire. When the powder heated up the gas it produced built up in the tube and blew it up with a loud bang. Chinese used the powder to create explosive arrows, they put bamboo shafts with the powder in it on the end of regular arrows, and cannons that shot rats at oncoming enemies, which spooked the soldiers and the horses. The ratio used for the powder then and now is: 75% KNO3, 15% Charcoal, 10% Sulfur. Roger Bacon, an English scholar was one of the first Europeans to study the powder.

Joseph Priestley is known to most as the man who discovered oxygen, and seven other elements. He did not name it, but he did discover its presence and he called it “dephlogisticated air”. He did it by using a 12-inch-wide glass "burning lens," focusing sunlight on a lump of reddish mercuric oxide in an inverted glass container placed in a pool of mercury. He discovered three types of air: air, fixed air (carbon dioxide) and inflammable air (hydrogen). By doing so, Priestley also discovered 10 new gases: nitric oxide (nitrous air), nitrogen dioxide (red nitrous vapour), nitrous oxide (inflammable nitrous air), hydrogen chloride (marine acid air), ammonia (alkaline air), sulfur dioxide (vitriolic acid air), silicon tetrafluoride (fluor acid air), nitrogen (phlogisticated air), oxygen (dephlogisticated air), and a gas later identified as carbon monoxide. He also wrote a number of books about electricity, air, and his own philosophies.