purpose of this lab was to see if radiation has an effect on the cultivated radish seeds that we used. From the observed data that we collected‚ we were able to conclude that when seeds are exposed to radiation‚ it affects how they grow‚ if there is any growth at all. Introduction Radiation is an important environmental abiotic factor for plants‚ and one small section of the electromagnetic radiation spectrum‚ is called the Photosynthetically Active Radiation (PAR)‚ provides the energy to
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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
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The Cosmic Microwave Background Radiation Perhaps the most conclusive (and certainly among the most carefully examined) piece of evidence for the Big Bang is the existence of an isotropic radiation bath that permeates the entire Universe known as the "cosmic microwave background" (CMB). The word "isotropic" means the same in all directions; the degree of anisotropy of the CMB is about one part in a thousand. In 1965‚ two young radio astronomers‚ Arno Penzias and Robert Wilson‚ almost accidentally
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Blackbody radiation: a spectroscopic study John Greavu Partner: Nicholas Souhleris TA: Yilikal Ayino (Friday‚ Section 006) April 18‚ 2014 I. PRELAB A blackbody is a body that absorbs all electromagnetic radiation and emits a continuous spectrum‚ such as heated cavern with just a small opening to the outside world. In 1900‚ German physicist Max Planck derived an expression for this blackbody spectrum. Knowing that oscillators emit radiation‚ he assumed that oscillators within the cavern were
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___Katie Hastings___ Blackbody Radiation Lab 11 Go to http://phet.colorado.edu/simulations/sims.php?sim=Blackbody_Spectrum and click on Run Now. 1) In this lab‚ you will use the Blackbody Spectrum Simulation to investigate how the spectrum of electromagnetic radiation emitted by objects is affected by the object’s temperature. In this simulation‚ you can input the temperature and observe the spectrum of the radiation emitted. a) The temperature of stars in the universe
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Electromagnetic radiation Electromagnetic radiation (EM radiation or EMR) is one of the fundamental phenomena of electromagnetism‚ propagating and traveling through space via photon wave particles‚ carrying radiant energy. In a vacuum‚ it propagates at a characteristic speed‚ the speed of light‚ normally in straight lines. EMR is emitted and absorbed by charged particles. As an electromagnetic wave‚ it has both electric and magnetic field components‚ which oscillate in a fixed relationship to one
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In this report‚ the absorption of heat in white‚ black and silver will be explored. Infrared radiation is invisible radiant energy‚ it lies between the visible light and the microwave portion of the electromagnetic spectrum. Heat is the main source of infrared energy‚ heat is produced by the movement of atoms and molecules. This experiment was conducted to investigate how black‚ white‚ and silver cans would absorb heat. The electromagnetic spectrum is made up of gamma rays‚ X-rays‚ ultraviolet‚
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of these treatments. Anyone suffering from grave pain of the spine needs to understand the difference between physical and chiropractic therapy before deciding which one to select as the correct therapy to relieve his or her pain. Although chiropractic work therapy and physical therapy both seem to be effective in treating diseases of the back‚ physical therapy seems to be more effective. One of the first things that back-pain sufferers should consider look at whilewhen trying to decide what
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A. Psychoanalytic Therapy/Psychodynamic Therapy “As the originator of psychoanalysis‚ Freud pioneered new techniques for understanding human behaviour.” Corey (2009‚ p.60) “ Just as experience may lead to symptoms‚ so psychoanalysis‚ a verbal form of therapy‚ may lead to their resolution.” Monte and Sollod (2003‚ p.19) Key Concepts There are three pillars of Psychoanalytical therapy‚ repress‚ resist and transference. Psychoanalytical therapy focuses on the unconscious
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Family Therapy is a type of therapy that focuses on the relationship between family members or partners. While other type of therapy look at individual patients alone‚ family therapy brings family relationships into the picture. The goal of this therapy is to explore the relationships with other family members that may be the potential cause of the problem or problems of the identified patient (Exploring 503). There are multiple approaches that a family therapist may take. Some of the major techniques
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