The earliest knowledge of chemistry was in 3500 B.C in Egypt and Mesopotamia. Chemistry was concerned anything that was pottery, dyes or crafts that were developed but not considerable skills because no one truly understood its purpose. The basic idea of elements or compounds were first formulated by Greek philosopher during 500 to 300 B.C when people believed fire , water, earth, and air combined to form all living and non-living things. In the beginning of Christianity an ancient Egyptian and Greek philosopher were fused into the new ideas of science, starting with little experiments such as turning metal into gold or imitation of precious gems. Later on people such as Robert Boyle, Robert Hooke and John Mayow were just the few people who discovered specific things in history.
Boyle was the founder of modern chemistry. He performed experiments dealing with pressure, using an air pump and discovered the volume and pressure in gases. Hooke gave the first rational explanation of combustion; as a combination with air. Mayow studied animal respiration. As they all worked together to figure out the theory of combustion, two Germans named J.J Becher and G.E Stahl introduced the false phlogiston theory of combustion, which came to a theory that all substance phlogiston is contained in all combustible bodies then escapes when the bodies burn. The discovery of gases and analysis of air as a mixture in gas occurred during the phlogiston period. Carbon dioxide first came about by J. B van Helmont then later discovered by Joseph Black in 1754. The next element was hydrogen; hydrogen was discovered by Boyle but was carefully studied by Henry Cavendish, which was called inflammable air. Cavendish also found the explosion of hyd...
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...lthough radiation from the waves may cause cancer and other illnesses, the benefits make it seem like nothing. There are plenty ways to prevent radiation from being harmful, so it really is not that much of a problem. Using X-rays can kill bacteria that can cause many different sicknesses from food so that is always a positive to any invention. Without the help of a few main scientists, doctors, and normal people, the X-Ray would have never been possible, so thanks to them you can find out if your arm is broken or it is just a bone bruise. From torn muscles, to torn ligaments to pulled muscles, the CAT scan and MRI (both were made via the X-Ray) would have never been invented in the first place. Appreciate the items you have, because without them you never know where you would be. I think we can all agree that the X-Ray was a prominent invention in our day’s time.
middle of paper ... ... The Web. 22 Feb. 2014. http://www.chemheritage.org/discover/online-resources/chemistry-in-history>.
Apart of becoming a new patient at a dental office is taking an x-ray and some may have question along with taking an x-ray, like “will I be affected by the x-ray?” or “will I get cancer?”, “how long will it take” “are x-ray’s safe?”, the list goes on and on. So in this paper we will talk about different types of radiation affects such as affects on children and pregnant women as well as some things that may help reduce some of the radiation that may harm the human body.
(bethinking.org) Life demands a certain chemistry. The information that makes up any living being is stored on a long molecule called DNA. (answeringenesis.org) If the laws of chemistry were different life as we know it would not be possible. The question of how the universe came to be as it is and how we as humans came about often resonates deeply, particularly with scientists. Many conversations between scientist Christians and other scientists about God and Christ end up considering biological evolution or the Big Bang. Chemistry’s contribution to the story of our origins the transformation of inanimate matter into the first living organisms is much less well understood than other areas of our origins. However, many parts of the process are increasingly understood and we may eventually know the molecular details of the origin of life. As Christians, we need to think through how we would respond to a developed theory in this area.
Vital to life, a necessity to combustion, and the component of innumerable compounds, oxygen is by far one of the most important elements. Astoundingly, Oxygen makes up a fifth of our atmosphere, 49.5% of all compounds on Earth contain oxygen, makes up about 2/3 of our body, yet human kind has only know of it since 1977 (http://pearl1.lanl.gov/periodic/elements/8.html). Ironically, within a period of a couple of years, three different men had stumbled upon the vital element. Carl Wilhelm Scheele, a Swede, made the initial discovery. However, Joseph Priestly, the man generally attributed with the discovery on the basis of his works being published first, discovered it in 1774. Neither of them quite understood it though, and only a French man by the name of Antoine Lavoisier who would be the first to fully understand it and disprove the old “phlogiston� notion (Priestly Joseph 4). Nonetheless, Carl Wilhelm Scheele was still the first to discover oxygen, a discovery that would be one of many in a rich life.
After finishing his apprenticeship, Carl worked at several different pharmacies all over Sweden until he created his own business. Although he treated scientific research as secondary to his work (Urdang 17), Scheele is described as fanatical and prolific by those who knew him. He was admitted to the Royal Swedish Academy of Science in 1775, and with his pension, was able to continue experimenting until his death at the age of 44 due to arsenic and cyanide poisoning. Arguably, Scheele’s greatest discovery is oxygen gas. He believed in the phlogiston theory that was prevalent at the time, but his findings are true nevertheless. Carl calculated that about a quarter of air could combust (The Discovery of Oxygen: Part 2), and tried obtaining a pure sample of the gas by heating substances such as HgO, KNO₃, Hg(NO₃)₂, or MnO₂ with H₂SO₄. After conducting these experiments, Carl wrote a book, which was called the Chemical Treatise on Air and Fire. Because this happened after Englishman Joseph Priestley already published on the topic, his work was largely ignored. Besides oxygen Scheele created and discovered many other elements and compounds. For example, by treating MnO₂ with hydrochloric acid, Scheele produced chlorine gas in
Hammack, William. "“THE GREATEST DISCOVERY SINCE FIRE”." Spring 2005: n. pag. Web. 23 Oct 2009. .
Did you know that without X-rays many people’s illnesses would go untreated, as well as undetected? Today, Radiology technicians are helping the health of individuals every day, they help diagnose conditions in order to save people’s lives. Although being a radiology technician can be sometimes stressful, the reward of knowing that you are helping save someone’s life is well worth it. Being a radiology technician can also be dangerous, due to the process of administering radiation, but the benefits of being able to know that you helped a person out ways all the negative factors of this career.
Bruce Mattson. “Henry Cavendish 1731-1810”. History of Gas Chemistry. Updated September 25, 2001. Retrieved December 1, 2011
Things are very different from each other, and can be broken down into small groups inside itself, which was then noticed early by people, and Greek thinkers, about 400BC. Which just happened to use words like "element', and `atom' to describe the many different parts and even the smallest parts of matter. These ideas were around for over 2000 years while ideas such as `Elements' of Earth, Fire, Air, and Water to explain `world stuff' came and went. Much later, Boyle, an experimenter like Galileo and Bacon, was influenced much by Democritus, Gassendi, and Descartes, which lent much important weight to the atomic theory of matter in the 1600s. Although it was Lavoisier who had divided the very few elements known in the 1700's into four different classes, and then John Dalton made atoms even more believable, telling everyone that the mass of an atom was it's most important property. Then in the early 1800's Dobereiner noted that the similar elements often had relative atomic masses, and DeChancourtois made a cylindrical table of elements to display the periodic reoccurrence of properties. Cannizaro then determined atomic weights for the 60 or so elements known in the 1860s, and then a table was arranged by Newlands, with the many elements given a serial number in order of their atomic weights, of course beginning with Hydrogen. That made it clear that "the eighth element, starting from a given one, is a kind of a repeat of the first", which Newlands called the Law of Octaves.
Better Health III. X-rays A. X-rays history 1. Who discovered. 2. When discovered.
The writings of some Greek philosophers may be considered to be among the very first chemical theories, such as the theory that all things are composed of air, earth, fire, and water. Each of these were represented by different elements, such as sulfur, salt, mercury, and, ideally, gold. Other ideas held by alchemists were that each of the known elements were represented by heavenly bodies. Gold was earth's representation of the sun, silver for the moon, mercury for the planet Mercury, copper for Venus, iron for Mars, tin for Jupiter, and lead for Saturn.
Nonetheless, it was still an early step to understanding chemistry and the origin of many techniques and methods of chemistry today. Alchemy was the stem and predecessor to chemistry, both related to scientific practices; each utilized experimentation, chemists using the discoveries having been made by alchemists. Although alchemy did focus on the understanding and acquiring of knowledge through experiments and observations of matter, it’s this data that allowed for such great development and advances in
Medicines and medical technology always have two separate sections that describe itself. It is divided in advantages and disadvantages. As time goes by, scientists research to improve medicine and medical technology to increase the advantages section. However, no matter how advanced it becomes, medicine and medical technology still has both positive and negative impacts. Mostly, there is a case where something new can also have another type of negative impact too. One example of a medical technology that has both positive and negative effects to patients from history are X-rays. Before X-rays was invented, doctors had to be extra cautious. To check for anything abnormal in the body, they needed to gash the body and look inside. Nowadays, there are X-rays. Doctors have less need to cut into the body. On the other hand, there is a new negative impact: radiation. It may cause cancer and many other diseases and damages. What never changes is the fact that new technology often has both positive and negative impacts.
Two of the most famous Muslim chemists are Jabir ibn Hayyan and Rhazes. A lot of writings assured that the true founder of chemistry as a science was Jabir ibn Hayyan and Rhazes who derived much of his information from Jabir's books. Other Muslim chemists tried hard in chemistry ,but it is impossible to name any other Muslim chemist of the caliber of Jabir and Rhazes.
Science and Technology has been around from the beginning of time. It evolved from the everyday efforts of people trying to improve their way of life. Throughout history, humankind has developed and utilized tools, machines, and techniques without understanding how or why they worked or comprehending their physical or chemical composition. Before we go any further a definition has to be given for both Science and Technology because they are both different in their own right even though the two are almost indistinguishable. According to the Oxford Dictionary Technology can be defined as the knowledge or use of the mechanical arts and applied sciences, while Science can be defined as the branch of knowledge involving systematized observation and experiment. Science can be further divided into three separate categories; Pure, Applied and Natural Sciences. In addition technology is often defined as applied science, it is simply the application of scientific knowledge to achieve a specific human purpose, however, historical evidence suggests technology is a product of science.