Relative dating and radiometric dating are two different things used for the same purpose. This purpose is to determine the age of fossils and other geological features. Radiometric uses radioactivity while relative uses location of the fossil or feature in rock layers. Although radiometric is more accurate than relative, relative dating is easier, quicker, and is the oldest way. These two ways are some of the common ways but not the only ways. There are also methods like carbon dating and…
– equation (2 gives info on location of electron in terms of probability density - wave functions are called orbitals – [pic], where E is energy, e2 is electric potential, r is orbital radius and h is Planck’s constant 1925 Wolfgang Pauli – each orbital has only 2 electrons is now explained due to direction of spin of electrons. Spinning electrons create magnetic field. Only 2 electrons of opposite spin in an orbital referred to as Pauli exclusion principle Hund’s rule – half fill…
(Am). This radioactive material is the unstable result of nuclear production and testing of uranium and plutonium. Impacts of Americium on the human body allows this material's low-energy gamma rays to be used in some cancer treatments while the alpha radiation emitted minimally effects the contaminated host (Wanless, A., 2011). Americium can be useful to humans, despite its radioactive state as it is used in testing devices such as fluid gauges, thickness measurements, and is also used in the…
matter is conserved in a chemical reaction. The next chemist to make a big impact on chemistry is JJ Thomson who proposed the model of the atom known as the plum pudding model which provided the first suggestion an atom is made up of even smaller particles. This model shows that atoms are made from a positively charged substance with negatively charged electrons all throughout, representing raisins in plum pudding. Not long after the plum pudding model, Thomson started to study the passage of an…
To begin, the role of the ACH receptor is vital to biology. An incoming action potential to an alpha motor neuron causes acetylcholine or ACH, at the end plate. The ACH binds to ACH receptors on the sarcolemma causing a depolarization through sodium influx. In your body, calcium performs a number of basic functions. The body uses around 99 percent of its calcium to keep bones and teeth strong, as a result, supports skeletal structure and function. The rest of the calcium in your body plays…
Radon is a naturally occurring element that does not harm humans in the outdoors. However, it can build up inside buildings and can cause cancer. Because of this, the EPA and other environmental organizations are requiring increased testing and mitigation. This will affect homeowners, homebuilders, schools, and the workplace. Radon is everywhere in our environment. Radon comes up from the ground and into our home and schools. Colorless and odorless, radon is a decay product of radium (Radon…
He was inspired by it and started doing experiments out the book. Through the further experimentation, involving firing and alpha particles at foil, Rutherford made a new discovery that nearly the total mass of an atom is concentrated in a nucleus. He then gave birth to the nuclear model, a discovery that paved the way to the invention of the atom bomb. Rutherford was awarded with…
Ernest Rutherford was born on August 30, 1871, in Spring Grove, New Zealand. He was the fourth child out of twelve children, as well as the second son in the family. Ernest’s father struggled with education and supporting the family, while Ernest’s mother, a schoolteacher, pushed him to obtain an education. During Rutherford’s early life, he did household and farm work. His family referred to him as “Ern.” Due to lack of financial funds in the Rutherford family, Ernest believed that he had to…
atmosphere would be cosmic rays that emit radiation in big rays that reach the Earth from space, rocks and debris that emit radioactive radon gas, and plants that can absorb excess radiation from the soil. Artificial radiation includes alpha particles, beta particles, x-rays and gamma rays. Though radiation was understood, when speaking of its origin, the dangers of it were not quite as known and actually caused the death of some people who worked studying radiation. Too much exposure to…
The released energy is cause by the disintegration of an atom, which travels in the form of a wave. There are different types of radiation, such as gamma, x-rays, neutron, beta and alpha. Alpha radiation is big but cannot travel far and can be easily stop; so it is unable to penetrate the skin; but if is ingested it could cause serious internal damage. Beta is much smaller and can travel about ten feet in the air and can be dangerous…