What do photons do - Study guides, Class notes & Summaries

Chapter 03: Radiation Characteristics Iannucci: Dental Radiography, 5th Edition MULTIPLE CHOICE 1. In dental radiography, the term ________ is used to describe the mean energy or penetrating ability of the x-ray beam. a. quality b. quantity c. intensity d. wavelength ANS: A Quality is used to describe the mean energy or penetrating ability of the x-ray beam. Quantity refers to the number of x-rays produced. Intensity is defined as the product of the quantity and quality per...

What term refers to the vaporization, cutting, or removal of a portion of the epidermis and/or dermis? - Ablation What do photons do? - Travel at the speed of light in the form of a wave What term refers to light energy that is "in phase"? - Coherent light What aspect of a laser determines the type of chromophore with which the light will react? - Color What is NOT one of the common chromophores in the body? - Lymph What is NOT one of the four tissue effects of lasers? - Collection What...

Fluoroscopy Test Questions and Answers All Correct Where is the tower connected? - Answer- To the x-ray tube mount What does the image intensifier do? - Answer- Increases brightness of image How much can modern image intensifiers increase brightness? - Answer- 8000 times What does the input screen do? - Answer- Absorbs x-ray photons and emits light photons What does the photocathode do? - Answer- Absorbs light photons and emits electrons Where are the electrons accelerated from...

Advanced Esthetic Services Review -- Master Esthetics (Washington State) Real Exam Set Questions And Revised Correct Answers What term refers to the vaporization, cutting, or removal of a portion of the epidermis and/or dermis? - ANSWER : Ablation What do photons do? - ANSWER : Travel at the speed of light in the form of a wave What term refers to light energy that is "in phase"? - ANSWER : Coherent light What aspect of a laser determines the type of chromophore with which th...

RADON 201 Physics Final ExamIn the process of _________, all the energy is transferred to K shell electron from an incoming photon - correct answer Photoelectric ________ is independent of atomic number on a gram to gram basis - correct answer Compton interaction/effect ______ radiation is basically photons that do not change direction in its path, whereas ______ radiation is basically photons that change direction in its path due to interaction with ______ shell electrons - correct answer...

What does filtration do? - Answer Removes low energy x-ray photons from the x-ray beam that cause unnecessary patient expsoure Radiation scatter production is increased when? - Answer The collimator is wide open, the kVp is too high, or the body part is to thick Quality of the beam is? - Answer kVp

What characterises Electro-magnetic radiation 1. Wavelength 2. amplitude - height of wave from centreline to peak 3. Polarization - orientation vector of photons 4. frequency - number of wave cycles Why can people get sunburnt whilst sitting in the shade 1. Reflected UV radiation 2. Scattered UV radiation - from atmosphere and clouds What is a high pass filter? - Image enhancement technique which enhaces the edges and finer details of an image - This is done by subtracting a lo...

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...

AC-HPAT Biology 2601 Midterm Exam #1 || All Questions & Answers (100% Correct) AC-HPAT Biology 2601 Midterm Exam #1 || All Questions & Answers (100% Correct) For one ectotherm, what should the sum of all heat inputs and outputs be? - ANSWER - The sum should be 0 - Radiation + Convection + Conductance + Latent Heat Exchange = 0 How do plants affect their leaf temperature? - ANSWER - Leaf colour alters radiation absorption, shape affects convection Where does ectotherm heat come from? - ...

m   1. Which of the following is the mRNA start codon in most cases? A. UAA B. AGU C. AUG D. UGA 2. Which of the types of RNA is the smallest? A. mRNA B. tRNA C. rRNA D. 3. Which of the following is not considered a pyrimidine? A. C B. T C. U D. G 4. Which of the following is paired correctly? A. A-G B. C-G C. A-U D. G-T 5. Which of the following characterizes a Western blot? A. Antibody/protein hybridization B. DNA/RNA combination C. RNA ...