Ionizing radiation

Polarization of X-rays was first demonstrated by Barkla. He was performing experiments on the secondary X-ray radiation phenomena (C. G. Barkla 1905). He used a block of graphite that scatters the primary X-ray beam from an X-ray tube. The scattered intensity of the X-ray beam was measured in two mutually perpendicular directions. He denoted the scattered intensity in a parallel direction to the tube axis I_pand the one scattered at right angles I_s. The degree of polarization for X-rays emitted

How It Works- Refracting telescopes use two glass lenses to gather and focus light. They bend, or refract light as their name suggests, as it passes through different mediums. The objective lens gathers and then refracts it to a focus near the end of the tube. The image is magnified and brought to the viewer’s eye by the eyepiece. Information It Provides- Optical telescopes are used to observe objects, which are in the visible light spectrum, by magnifying the image and thereby improving the detail

MODULE 04 Cross-Cultural Competency Culture Culture is the pattern of action and the ways of perceiving, feeling, and thinking acquired growing up in a particular group of people Ethnocentrism Ethnocentrism is the attitude held by the members of a culture that theirs is the only true, right, and best way to view and act in the world. Cultural relativism Cultural relativism is the idea that human behavior, ideas, and emotions must be understood in the context of the whole culture in which they occur

Introduction The Quantum Theory was the second of two theories which drastically changed the way we look at our physical world today, the first being Einstein’s Theory of Relativity. Although both theories revolutionized the world of physics, the Quantum Theory required a period of over three decades to develop, while the Special Theory of Relativity was created in a single year. The development of the Quantum Theory began in 1887 when a German physicist, Heinrich Hertz, was testing Maxwell’s Theory

The Analysis of Spinach Pigmentation<p> During Photosynthesis <p> University of Alabama<p> I. Introduction:<p> &quot;Photosynthesis is the conversion of light energy to chemical energy that is stored in glucose or other organic compounds; it occurs in plants, algae, and certain prokaryotes&quot; (Campbell, G-16). The formula below is photosynthesis and &quot;the ingredients necessary to make a plant grow&quot; (KoK, 30).<p> 6CO_2 + 6H_2_0,,&#179; C_6_H_12_O_6_ + 6CO_2<p> Photosynthesis occurs within

A New Pollution? Abstract: Increasingly our society is being inundated with information wirelessly, through emissions of electromagnetic waves (EMF). Any room you enter is being blanketed with ever increasing amounts of, in some cases, highly powerful electromagnetic waves. These waves carry everything from cell phone traffic to wireless internet signals, to even conventional AM/FM radio signals. Although humans and animals cannot perceive most of these electromagnetic frequencies, they

high-grade gliomas survive more than 5 years".1 One treatment option for these children is radiation therapy. This paper is to show if these treatments are effective in eliminating pediatric brain tumors and adding more time to these children's lives. Radiation therapy uses high-energy x-rays to kill cancer cells.2 It

The eyeball holds many parts to allow eyesight. The retina holds the key to allowing the human eye to see color. The pupil appears as the black part of the eye that people see, the pupil however does not have much to do with comprehending color. As Clarence Rainwater said in his book “The pupil is simply the hole in the iris through which light enters the eye.” (84) The light then has to pass through many parts of the eye before reaching the retina such as the transparent cornea, the aqueous humor

Frequency selective surfaces (FSSs) have been used in a 23 number of different applications including reflector antenna 24 design,1,2 radomes,3 spatial filters,4 electromagnetic shield- 25 ing,5 design of RF absorbers,6 high-power-capable and 26 harmonic-suppressed spatial filters,7,8 and aberration-free 27 microwave lenses and reflect array antennas.9–13 FSSs are 28 also used as spectral filters at terahertz and infrared frequen- 29 cies.14–16 As frequency increases, designing multi-layer, 30 free-standing

Cancer treatments have been the talk for most everyone since the late 20th century. A lot of people are working very hard to try and make a true cure for cancer without significant side effects from that specific treatment. Cancer is a deadly disease that we don’t really have a cure for yet, but are extremely close to one. Cancer has evolved exponentially over the years, and yet we don’t have a true cure just yet. “Cancer is a class of diseases in which cells lose their ability to regulate cell