What are photons - Study guides, Class notes & Summaries

Instrumentation NMTCB Practice with Certified Solutions What is a gamma camera crystal made of? Sodium iodide activated with thallium What is the purpose of the crystal in a gamma camera? To absorb gamma (γ) rays and convert them into visible-light photons What is the mechanism by which gamma (γ) rays interact with a gamma camera crystal? Photoelectric effect or Compton scattering. What is the relationship between the energy of an absorbed gamma (γ) ray and the amount of light produced by...

CEM 141 MSU Exam 2 Questions and Answers Already Passed Lights acts as what? Particle and wave. Wavelength The distance (m) of waves from peak to peak. Short: x-ray (red), long: infrared (blue) Short - higher energy Long - lower energy Frequency (V) The number of wavefronts per second. Highest: x-ray Velocity of Light C = 3.00 X 10^8 = wavelength X frequency Amplitude The intensity, height of peaks of waves. Highest: blue light Energy of Wave (J) Increases as frequency i...

Electrolysis IBEC+Laser STATE BOARD Practice test 2018Laser stands for what? - correct answer Light Amplification by Stimulated Emission of Radiation What is the distance measured in nanometers between two peaks or two troughs known as? - correct answer Wavelength Light of only one color & one specific wavelength is known as? - correct answer Monochromatic Refraction is also known as what? - correct answer Transmission The process where by a newly created photon of light (generat...

Why can enzymes be readily detected in a lab? They are not consumed or destroyed during chemical reactions Which class of enzymes protects the cell from oxidative damage by reactive oxygen species? Catalase Active site -A region on an enzyme that binds to a protein or other substance during a reaction What is catabolism? The process of breaking down larger molecules into useful energy sources Upon cellular injury, which metabolic process is involved during the growth and repa...

Portage Learning BIOD 171 Microbiology Lecture Exam Key 1-6 Exams 1. What are the two major types of nucleic acids and their roles? DNA- deoxyribonucleic acid RNA- Ribonucleic acid DNA- Cellular life has DNA and a role that DNA has is long-term storage of information, it holds the characteristics of living organisms. RNA- Is the carrier of information in form of amino acid sequence. It converts the information in the DNA and synthesizes proteins Tru...

Fluoroscopy Exam Test Bank Questions with 100% Correct Answers What activates the production of x-rays during fluoro? - Answer- Dead man switch (foot switch); NOT THE "FOOT PEDAL"! How many light photons are emitted for each absorbed x-ray photon? - Answer- 5000 light photons. What percentage of light from an image intesifier's output screen is transmitted to the cine camera when in use? - Answer- 85 - 95%. Which type of timer accuracy test is performed for three phase x-ray unit...

Laser stands for what? - ANS Light Amplification by Stimulated Emission of Radiation What is the distance measured in nanometers between two peaks or two troughs known as? - ANS Wavelength Light of only one color & one specific wavelength is known as? - ANS Monochromatic Refraction is also known as what? - ANS Transmission The process where by a newly created photon of light (generated through amplification) acquires energy equal to the photons that created it is known as...

ELECTROLYSIS IBEC+LASER STATE BOARD PRACTICE TEST | QUESTIONS AND ANSWERS 100% PASS Laser stands for what? - Light Amplification by Stimulated Emission of Radiation What is the distance measured in nanometers between two peaks or two troughs known as? - Wavelength Light of only one color & one specific wavelength is known as? - Monochromatic Refraction is also known as what? - Transmission The process where by a newly created photon of light (generated through amplific...

Electrolysis IBEC+ Laser STATE BOARD Practice test 2024 Questions and Answers 100% Solved Laser stands for what? ️️Light Amplification by Stimulated Emission of Radiation What is the distance measured in nanometers between two peaks or two troughs known as? ️️Wavelength Light of only one color & one specific wavelength is known as? ️️Monochromatic Refraction is also known as what? ️️Transmission The process where by a newly created photon of light (generated throug...

how do you reduce beam hardening 1. Increase dose 2. Reduce collimation--Reduce slice thickness 3. Increase window width At what level does the abdominal aortal bifurcate? L4 What is the typical scan delay after injection of contrast media for studies of the liver? 30-45 seconds What window settings provide the best tissue differentiation within the liver? window width= 140, level= 60 What is the window settings that provide the best bone window for the pelvis? ...