The Woman from Willendorf measures 11 cm while the “venus” figurines measure 15 cm. The small size indicates the object was meant to be an accessible item. When looking at both objects, the “venus” figurines contain much texture to the piece than compared to Woman from Willendorf. This eliminates the possibility of the material being limestone and bring into question whether this piece could be…
The dominant minerals include quartz, feldspar, mica, hornblende, and…
More specifically, at room temperature (25 degrees Celsius), it is one of five elements to exist that…
Which one of the fo llowing is often easily separated into its components by simple techniques such l) as filtering or decanting? A) homogeneous mixture B) solutions 0 heterogeneous mixture D) elements E) compounds 2) An clement cannot 2) A) be part of a heterogeneous mixture Ji,) be a pure substance is corrccl for ___ _ 19) A) elements B) homogeneous mixtures Ohcterogeneous mixtures D) compounds 20) Which of the fo llowing is an example of a lieterogeneous mixture?…
Gallium is one of those elements that is used in industry every day. Gallium was discovered in Paris at the private laboratory of Paul-Emile Lecoq de Boisbaudran (1831-1912) at 3 a.m. on August, 1875. He observed a new violet line in the atomic spectrum of some zinc he had extracted from a sample of zinc blende ore (ZnS) from the Pyrenees. He knew it meant that an unknown element was present. Gallium comes from Gallia, the Latin name for France.…
Multiple Choice: NORAD stands for North American Aerospace Defence Command. The Suez Canal Crisis was when the Egyptian government took control of the Suez Canal. This canal was used by Britain for oil transport, so Western governments were afraid that this would be a blow to Britain’s economy.…
Medicine Changed by Radiation Radiation has changed over the years and wasn’t even known to be used in medicine until after it was used in the military in World War II. It was discovered by a German scientist but then the possibilities of all the things it could be used for was discovered by a Polish-born French scientist. Radiation changed medicine for the better by killing off cancerous, disease ridden germs and cells, this is significant because it changed the way we look at treatment. In 1895, radiation had just been discovered by Wilhelm Conrad Roentgen, a professor at Wuerzburg University in Germany. ("History of Radiography").…
The name of radioactive nuclide I chose to look up is Technetium-99 (Tc=99). There are two forms of technetium being technetium-99 and technetium-99m, which is a short-lived form of Tc-99 (EPA.gov, 2017). Technetium-99 emits beta particles. Below is an equation showing the decay of technetium. 99 0…
The school did not sponsor her research, however she received funding from various mining and metallurgical companies and organizations. In her studies on the mysterious rays on the minerals pitchblende and torbernite (chalcolite), the electrometer displayed that the pitchblende was four times as active as uranium and that torbernite was twice as active than uranium she believed that these minerals contained a substance much more active than uranium alone. This led her on a meticulous and refined search for other radioactive elements, in this search, she deduced that thorium was also…
The United States was at war with the Axis powers of World War Two. Rumors that Germany was developing a weapon with destructive force that was yet unseen by the world. Such a device could give them the edge to win the war against the allies. This rumor triggered fear with American scientists and physicists and caused president Roosevelt to create a project to research and develop their own weapon before the Nazis. The Manhattan project was created to research and develop technology with the destructive force to exterminate mankind and a psychological impact that changed the world forever.…
Canada used to be the world’s leader in the mining of uranium. They supplied the uranium to many countries, especially the United States during World War Two. The United States were creating nuclear and atomic bombs and weapons, more specifically the Manhattan Project. Canada supplied the United States military with the uranium necessary for the weapons construction. Canada refined and processed the uranium for the use of it in United States military in 1942.…
Alexander Fleming was an important scientist because he discovered antibiotics. Before this discovery Greeks and Indians used plants to treat infections. Russians used heated soil to heal infected wounds. Sumerian doctors provided beer soup mixed with turtle shells and snake skins for their patients. All the crazy ideas never compared to the discovery of antibiotics or antibacterial.…
It is primarily used in electrostatic non chargeable items. The main example of lithium that we use in our world today is batteries. In addition to lithium being used for energy, it is usually present in most mood stablizing drugs. Some examples are Lithotabs, Eskalith, Lithonate, Lithobid and Eskalith CR. It is used in mood stabilizers due to the fact that lithium exerts the flow of sodium through the nerves and muscle (Lithium History…
One of the most mysterious, yet terrifying realities of the modern world is the topic of atomic warfare. Not many people understand how it works, however they terrified of it as an imminent threat. A majority of people have the topic of atomic warfare hiding in the back of their heads but don’t think too much of it because it’s been years since a country has been attacked. A recent number of tests in North Korea has scared many Americans due to a history of tension between the two countries. The destructive history of atomic wars interested me in how an atomic bomb works.…
Alexander Fleming: Biotechnology and the Discovery of Penicillin Sarah King James J. Cheetham, Tuesday, October 6, 2015 BIOL1010 T "When I woke up just after dawn on September 28, 1928, I certainly didn't plan to revolutionize all medicine by discovering the world's first antibiotic, or bacteria killer… But I suppose that was exactly what I did.” Sir Alexander Fleming, already well known for his research on lysozymes, an antibacterial enzyme that occurs naturally in tissues and secretions that are capable of dissolving bacteria, accidentally became the founder of the medicine known today as penicillin by leaving his laboratory a mess before going on vacation. Fleming had been researching staphylococcus aureus, a fairly common…