types of radiation surrounding us. As human beings‚ we are primarily exposed to natural forms of radiation such as radon‚ cosmic (space) radiation‚ and naturally occurring radioactive elements found in the Earth. We are also exposed to man-made radiation including medical radiation. Nearly half of the radiation in which the US population is exposed to comes from medical sources such as CT scans‚ x-rays‚ and nuclear medicine. In 1899‚ Ernest Rutherford discovered that the radiation emitted by
Premium Ionizing radiation X-ray Electromagnetic radiation
Acute Radiation Syndrome Acute radiation syndrome which is also sometimes known as radiation sickness or radiation toxicity is an extremely serious illness that occurs when the entire body (or most of it) receives a high dose of penetrating radiation‚ a dose greater than 50 rads‚ in a very short period of time. Studies in animals and humans exposed to radiation have allowed researchers to describe acute radiation syndrome. The most replicative cells are the most sensitive to the acute effects
Premium Ionizing radiation Radiation poisoning Gamma ray
Radiation pattern From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search Antenna radiation patterns In the field of antenna design the term ’radiation pattern ’ most commonly refers to the directional (angular) dependence of radiation from the antenna or other source (synonyms: antenna pattern‚ far-field pattern).[1][2][3] Particularly in the fields of fiber optics‚ lasers‚ and integrated optics‚ the term radiation pattern‚ or near-field radiation pattern‚ may also be used as
Premium Antenna Reciprocity Electromagnetic radiation
if UV Radiation induced a mutation in the DNA of Serratia Marcescens and prevented the production of the red pigment called Prodigiosin. Hypothesis: Maybe the disappearance of red color in Serratia Marcescens is caused by the UV light which induces mutations in its DNA and is known as a common mutagen. Prediction: If UV light mutates the DNA of Serratia Marcescens then the red pigment colonies of the bacteria will no longer be produced. Independent Variable: Ultra Violet Radiation Dependent
Premium DNA Mutation Ultraviolet
Exposure to lead has been proven to be a large public health concern. For the purposes of this paper‚ I am going to introduce what lead is‚ how people are exposed to lead‚ and the physiologic effects of lead exposure‚ focusing on acute lead toxicity‚ but more specifically‚ on chronic low level lead toxicity. The supplementation of 3 studies shows the relationship between lead exposure and one of these physiologic effects in children‚ specifically intelligence as measured by IQ scores. Lead is
Premium
Criticism of selective exposure Although empirical evidence of selective exposure has been documented in countless studies conducted in a wide range of research area‚ there have also been plentiful reports of lack of evidence supporting the existence of selective exposure. For instance‚ in a study conducted by Feather (1962)‚ evidence of the effect of selective exposure on participants’ choices was not found. In specific‚ smokers and non-smoker participants did not display any significant preference
Premium Psychology Scientific method Research
Exposure is a poem written by the one of the most famous poets of the World War 1‚ Wilfred Owen. The poem illustrates the conditions that the soldiers were exposed to while living in the trenches of the war zone. The poem is divided into two parts‚ with the first one being an introduction to the weather acting as more of the enemy to the British than the Germans were and comparing the war with the Germans less deadly than the war with the environmental conditions. In this essay‚ I will analyse how
Premium Death Poetry Word
radiating electric field (or electromagnetic signal) produced when radio stations broadcast? Include a description of what is producing the signal as well as the reasoning behind how this could produce a signal. We know that electromagnetic radiation is produced by accelerating charges. In the radio transmitter‚ electrons oscillate up and down and are thus accelerating. An electron will exert a force on another electron when they are some distance away‚ like charges repel. When the electron in
Premium Electromagnetic radiation Radio Light
ultraviolet radiation is: A. 700-1500 mµ B. 1600-12‚000 mµ C. 0.1-3 mm D. 180-290 mµ 2. Wavelength of long ultraviolet radiation is: A. 700-1500 mµ B. 290-400 mµ C. 180-290 mµ D. 0.1-3 mm 3. What ultraviolet wavelength will produce reticuloendothelial stimulation? A. 2600-2700 Å B. 2700-3000 Å C. 2900-4000 Å D. 2400-2500 Å 4. The magnitude of radiation flux at any particular point of the skin depends upon the: A. Cross-sectional diameter of the radiation beam B. Distance
Premium Electromagnetic spectrum Infrared Electric charge
Primary radiation is also known as direct radiation. * Secondary Radiation (aka Scatter radiation & Leakage Radiaiton) * Scatter Radiation – results whenever a diagnostic x-ray beam passes through matter. * Compton interactions between the x-ray photons and the electrons of the atoms within attenuating object deflect x-ray photons from their initial trajectories. * X-ray photons emerge from the object in all direction. * Leakage Radiation – radiation generated
Premium Ionizing radiation X-ray Radiology