Gamma-ray bursts

Assessment Task No: 4   X-rays and CAT scans – What they are and how they are produced What X-rays are - Clearly explains what an X-ray is X-rays are electromagnetic waves of very short wavelength and high frequency, in the range 0.001nm to 10nm. Due to their high frequency (therefore meaning high energy), x-rays penetrate flesh and may cause ionization of atoms they encounter. The body tissue absorbs energy and the intensity of the beam is reduced when x-rays pass through the body. Denser material

rtant that you remain still while the images are being recorded. Though nuclear imaging itself causes no pain, there may be some discomfort from having to remain still or to stay in one particular position during imaging. Unless your physician tells you otherwise, you may resume your normal activities after your nuclear medicine scan. If any special instructions are necessary, you will be informed by a technologist, nurse or physician before you leave the nuclear medicine department. Through the

to examine, diagnose & treat patients without the need of surgical processes. This process is used to see what is beneath the skins and bones to find any abnormalities present. There are many types of medical imaging used, such as :- X-rays : these invisible beams can go through a number of objects, making it a fast and painless test done to be able to see inside the human body. This test is mainly used to see the bones and it depends on the amount of radiation absorbed and the density

as cancer. Nuclear forces have also provided an alternative energy source to coal and natural gas. The field of nuclear chemistry encompasses many aspects including nuclear decay, radioactive elements in medicine, and nuclear energy. Alpha, beta, gamma - to many people those three words are the first three letters of the Greek alphabet, though

Lance Baines Mr. Sanders The radioactive Boyscout December, 2015 Introduction The A simple definition of the word radioactiveis to have or develope a strong and dangerous form of energy. This could also be named radiation. A radioactive substance incvolves a very harmful form of energy that is developed betwen nuclear reactions. In the book "The Radioactive Boyscout" by ken Silversteint, there are several examples of radioactive substances being produced. The main character in the book is very

unit. An example of this occurring is when the electron is the beta particle. Pursuing this further, gamma rays are high-energy photons with a very short wavelength of 0.0005 to 0.1 nm. The emission of gamma radiation results from an energy change within the atomic nucleus. Gamma emission changes neither the atomic number nor the atomic mass. Alpha and beta emission are often accompanied by gamma emission, as an excited nucleus drops to a lower and more stable energy

sources consists of food irradiation, which is limited to high-energy gamma rays, X-rays and accelerated electrons. Ionizing is source of radiation because of the high-energy free electrons from atoms and molecules. The electrically charged particles are converted to ions. Microwaves are example of gamma rays. Accelerated electrons can transfuse to treat the food only to a depth of three centimeters. Due to thickness of x-rays may pass through the food. Radiation dose is the quantity of radiation

____________________ 1A scientific paper submitted in partial fulfillment of the requirements in Biology 30 laboratory under Professor Neilyn O. Villa, 1st semester, 2011-2012. ABSTRACT To determine the effects of gamma radiation in inducing mutation on the growth of corn (Zea mays), an experiment using corn seeds exposed in to different rate of radiation (0kr, 10 kr, 30 kr, and 50 kr) was done. Four treatments were prepared using 10 seeds from each of the following

Nuclear Medicine Nuclear medicine has been around for more than 50 years now and stems from the discovery of x-rays and artificial radioactivity. In 1946, nuclear medicine made a monumental breakthrough when radioactive iodine led to the complete disappearance of cancer in a patient’s thyroid. Nuclear medicine became widely used in the 1950’s to measure the function of the thyroid, to diagnose thyroid disease, and for the treatment of patients with hyperthyroidism. By the 1970’s nuclear medicine

at sea level. Radioactive waves are also transmitted through some fabricated technology, soil, and rocks. The majority of people pose the question why do doctors or nurses where aprons when giving an x-ray. This is to protect them from radioactive waves. Nurses give countless numbers of x-rays a day. While you