Background radiation

Advancement in Radiation Protection: Non-Lead Apron People are exposed to radiation every day just by being alive on this earth. One receives approximately 3,000 µSv of ubiquitous background radiation a year, which means approximately 8.2 µSv per day (Howerton, Iannucci, 2012). This is known as background radiation and is caused by terrestrial, cosmic, and naturally occurring radon. On the other hand, during radiographic examination some degree of biological damage does occur during exposure, therefore no amount of radiation is considered safe (Howerton, Iannucci, 2012). For this matter, radiographers have the professional responsibility to reduce hazards caused by ionization radiation not only for the patients but for themselves and other staff members. Carefully deciding the appropriate radiographic procedure and sequence based on the patient’s need is imperative, as there must be justification and a benefit for taking each image. In order to properly address this concern, personal protective equipment (PPE), and particularly the use of the non-lead apron should be discussed. The biological damage and chemical changes that occur to human cells and chromosomes due to radiation can lead to two types of injuries at the cellular level. These are termed deterministic and stochastic, and either increase…

inflation model of the Big Bang accounts for the unequal level of matter-antimatter existing today and how stars could form before matter-antimatter reactions destroyed the universe. The existence of the Cosmic Microwave Background Radiation (CMBR). is in line with what is predicted by the Big Bang Theory, specifically that the CMBR exists. The expansion of the universe outward also supports the Big Bang theory as the expansion of the universe, just like the expansion of an explosion, reveals…

talks about the universe as we know it starting with a small originality, then expanding over the next 13.8 billion years to the universe we know of today. The phrase "Big Bang Theory" has been popular among astrophysicists for decades. The idea is that the universe began with an explosion more than 14 billion years ago, and many scientists also believe our universe and others, come from a “singularity”. According to the theory formulated in 1927, the universe is still expanding today. The known…

from that rapid expansion. That’s difficult to imagine, however, 3 major pieces of evidence support this; Hubble’s Law, Cosmic Microwave Background Information, and Big Bang Nucleosynthesis. The first piece of evidence, Hubble’s Law, is named after Edwin Hubble, who first wrote about it in 1929. Hubble’s Law is primarily about how speed and time are related, and also…

hard to find alternatives. The universe had a moment of creation in consequence has a creator.Relativity, a theory developed at the beginning of the twentieth century, originally intended to explain certain anomalies in the concept of relative movement, but which in its evolution has become one of the most important basic theories in the physical sciences (see Physics). This theory, developed fundamentally by Albert Einstein, was the basis for physicists to demonstrate the essential unity of…

Edwin Hubble was not the only astronomer to observe the cosmological redshifts. In fact, the first person to see these shifts is Vesto Slipher, an American astronomer who first observed the phenomenon in 1912. Although this expansion initiated billions of years ago, observations made by Edwin Hubble show that the universe is still in constant development up to this day. The best evidence that supports the Big Bang theory is cosmic background radiation. After being accidentally discovered by Arno…

protons, neutrons and electrons formed, creating the first atoms, hydrogen was the first element and continues to be years later, Gravity pulled together clouds of hydrogen to form the first stars. Stars made all the heavier elements through nuclear fusion, such as helium, carbon and oxygen. Furthermore, Gravity pulled stars together into galaxies. It would take thousands to millions of years for the universe to cool to the temperature it is today, and it continues to expand today. One of the…

It became a popular theory with improved evidence because of the discovery of cosmic microwave background. By the end of the 1960s and 1970s cosmologists, scientists, astronomers, the public had finally accepted the theory. It was in the spring of 1965 that unexplained microwave radiation was found by (2) by two astronomers called Arno Penzias and Robert Wilson. They discovered a noise that was created in the origin of the explosion. The noise didn’t just come from one location to another, it…

The satellite measures a type of radiation which is called the cosmic microwave background. It permeates the universe searching for evidence of the events that took place during and after the explosion known as The Big Bang. Very similar to the Cosmic Background Explorer, it spent four years orbiting Earth to detect the oldest light in space, the cosmic microwave background radiation. The four year mission of collecting data was successful and resulted in the conclusion that the universe in fact…

If it was found out that other galaxies are not moving further, and further away from us quickly.. This would cause the Big Bang Theory too lose its credibility. Also if many other pieces of evidence were found out to be untrue , I believe this theory would lose much of its credibility. The first part of this theory, I will be discussing my main point, which is whether galaxies are moving away from us or not and at what speed. According to Hubble's law, the universe has been expanding since…