Documents about Cathode Ray Tube
PHY241_Lab4
Arizona, PHYS 241
Excerpt: ... Acceleration of Electrons In A Cathode Ray Tube By Alex Chambers Lab Preformed: 23 September 2008 Report Submitted: 30 September 2008 Goals: The goal of this experiment was to study the movement of electrons within an electric field. This was done specifically by using a cathode ray tube . Theory: A cathode ray tube works by first receiving an electrical signal to a filament tube. The filament is heated and shoots electrons off into the cathode ray tube . At the filament, electrons are being shot in all directions. To focus the electrons to some specific point, the cathode ray tube uses deflection plates to guide the electrons down the length of the tube. The deflection plates are two pieces of metal that are oppositely charged, creating an electric field between them. As the electron passes through the deflection plate, its course is altered as it is attracted to the positive side of the deflection plates. The means that the electron exits a deflection plate at a different speed and on a different trajector ...
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notes_Lecture_02
Washington, CHEM 142
Excerpt: ... ing out. The particles have about the same mass as a proton. Movies to Illustrate the Nature of Atoms Primitive cathode ray tube : http:/micro.magnet.fsu.edu/electromag/java/crookestube/ Millikan oil drop experiment: http:/chemistry.umeche.maine.edu/~amar/fall2004/Millikan.html Rutherford scattering experiment: http:/micro.magnet.fsu.edu/electromag/java/rutherford/ http:/www.howstuffworks.com/framed.htm?parent=atom.html 2H2 (g) + O2 (g) = 2H2O (g) + Energy Hydrogen and oxygen are diatomic gases. Water can be a gas. ENERGY was released - This is characteristic of an exothermic reaction. This is a balanced chemical reaction. ...
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Chapter23_Notes
Stony Brook University, PHY 132
Excerpt: ... ! Electric Potential Due to Point Charges ! Potential Due to Any Charge Distribution ! Equipotential Surfaces ! Electric Dipole Potential !" " ! Units of Chapter 23 ! E Determined from V ! Electrostatic Potential Energy; the Electron Volt ! Cathode Ray Tube : TV and Computer Monitors, Oscilloscope Copyright 2009 Pearson Education, Inc. Copyright 2009 Pearson Education, Inc. 23-1 Electrostatic Potential Energy and Potential Difference The electrostatic force is conservative potential energy can be defined. Change in electric potential energy is negative of work done by electric force: 23-1 Electrostatic Potential Energy and Potential Difference Electric potential is defined as potential energy per unit charge: Unit of electric potential: the volt (V): 1 V = 1 J/C. Copyright 2009 Pearson Education, Inc. Copyright 2009 Pearson Education, Inc. 23-1 Electrostatic Potential Energy and Potential Difference Only changes in potential can be measured, allowing free assi ...
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chem 141 F07 Chapter 2 Study Sheet
Emory, CHEM 141
Excerpt: ... the overall understanding of elements and molecules. 6. It is important to understand the difference between ionic and molecular compounds. As well, it is important to understand the differences between the different forms of that the "formula" can take (molecular, empirical, and structural). DEFINITIONS You should have a working knowledge of at least these terms and any others used in lecture. Atomic Theory Cathode rays x-rays Neutrons Radiation Isotope Abundance Electrons A ZX Anode Law of conservation of mass "Plum-pudding" model Formation of covalent compounds "Gold-foil" experiment Atomic mass unit (amu, u) Formation of ionic compounds Nomenclature Family Nonmetal Law of multiple proportions Cathode Protons "Nuclear" model "Oil-drop" experiment Molar mass Mass number Law of definite proportions Semimetal Period Metalloid Cathode Ray Tube (Crookes Tube) Atomic number Notation Group Metal ...
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FYI012808
N.E. Illinois, UX 1040
Excerpt: ... erel Niels Bohr Louis de Broglie James Chadwick William Crookes Marie (Sklodowski) Curie Michael Faraday H. Eugen Goldstein I. Robert Millikan J. Wilhelm Roentgen K. Ernest Rutherford L. Erwin Schrdinger M. J. J. Thomson N. Alessandro Volta _N_ Invented an electrochemical cell much like a modern battery _G_ Established that atoms are electrical in nature & defined terms like cations & anions _E_ Developed the cathode ray tube where electrical current is passed through a vacuum _M_ Concluded that cathode rays consist of negatively-charged particles called electrons _H_ Concluded that cathode ray tube s also contain positively-charged particles (protons) _I_ In his oil-drop experiment, he determined the charge on an electron _J_ Discovered X-rays _A_ Discovered that radiation was emitted by a uranium compound _F_ Coined the term radioactivity & discovered radioactive elements polonium & radium _ Concluded all positive charge & nearly all mass of an atom is concentrated in nucleus _ Discovered the neutron ...
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chem notes ch.2
Texas A&M, CHEM 101
Excerpt: ... Goggles first two weeks of chem. Lab bring five dollars on Monday to receive my goggles. On Mon 8 Wed 6 Sund 3 Blocker 137 dedicated study times Have problems to work and other things. Chem Notes Ch. 2 Atoms and Elements Symbolic level is how we deal with symbols of chemistry. Atomic structure: A nucleus existing of protons and neutrons surrounded by an electron cloud. Proton is positively charged. Neutron is neutral. Electron is negatively charged. The nucleus is used to identify the element. The electrons is where all the chemical changes will take place. JJ Thompson 1.758803x10^11 C/kg Discovered first subatomic particle Nobel prize in physics 1906 e/m=1.758803x10^11 C/kg of electrons found this charger per mass charge through studying cathode ray tube s. Robert Millikan Det charge of electron Also det mass. Q=-1.602176x10^-19C (modern value) M=9.109383x10^-28 g or 9.109383x10^-31kg (modern) Made the Oil Atamizor Apparatus Protons were studied using Canal Rays. Rutherford took alpha particles and found ox ...
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Q1 studyguide S06 without pics
UNC Wilmington, CHM 101
Excerpt: ... There's a Quiz in Lecture Monday! 1 What about this quiz? Need to know your lab section Through page 95 Should bring a calculator and a pen Think 2 Quiz Know Table 1.5 on page 14 Be able to convert back and forth 500 cm = ? m 500m = ? cm Know about intensive (do not depend on amount) and extensive properties (depend on quantity) 3 Quiz Know about the atom how many protons, neutrons, electrons in 37Cl Know meaning of: Homogeneous mixtures (= solutions) Heterogeneous mixtures Physical change vs chemical change Isotope 4 Know the different experiments: Cathode ray tube / oil drop / gold foil / study of and particles: Who did them What they showed 5 Quiz Understand density In your calculations, keep track of your units! 6 Name Game Know the names and formula of common compounds. Especially study pages 61-64 Given the symbol, know the name of the common elements ( first 36, alkali metals, alkaline earth metals, halogens, noble gases) Given the n ...
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lec4
Stevens, PEP 112
Excerpt: ... e relevant to 1. a transistor. 2. a cathode ray tube . 3. magnetic resonance imaging. 4. cosmic rays. 5. lasers. The worked examples of charged-particle motion are relevant to 1. a transistor. 2. a cathode ray tube . 3. magnetic resonance imaging. 4. cosmic rays. 5. lasers. ...
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CHEMISTRY FINAL EXAM REVIEW
UGA, CHEM 1311H
Excerpt: ... CHEMISTRY FINAL EXAM REVIEW Experiments Dalton's Atomic Theory: 1) elements composed of atoms 2) all atoms of an element have same property 3) atoms cannot be destroyed or created 4) compounds formed when atoms combine in small whole number ratios 5) relative number and kinds of atoms constant in different compounds J.J. Thompson: Cathode ray tube with perpendicular magnetic and electric fields. Rays pass through positive plate and are deflected by magnetic and electric fields. * "electron," charge to mass ratio of electron Robert Milikan: Oil drop experiment. Drops of oil passed between charged plates. *charge on electron, mass of electron (using Thompson's ratio) Henri Becquerel: Studying uranium, it emitted high energy radiation spontaneously. *radiation Marie Curie: Isolated radioactive compounds of Becquerel's Uranium. *polonium, radium Ernest Rutherford: Radiation electric field. *3 types of radiation: 1) Beta negative, low mass 2) Gamma neutral, no mass 3) Alpha positive, high mass Gold Foil ...
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CRTScope
Caltech, PH 3
Excerpt: ... CALIFORNIA INSTITUTE OF TECHNOLOGY PHYSICS MATHEMATICS AND ASTRONOMY DIVISION Freshman Physics Laboratory Instrumentation: The CRT Oscilloscope Copyright c Virgnio de Oliveira Sannibale, 2001 2 Contents A The Cathode Ray Tube Oscilloscope A.1 The Cathode Ray Tube Oscilloscope . . . A.1.1 The Cathode Ray Tube . . . . . . . A.1.2 The Horizontal and Vertical Inputs A.1.3 The Time base Generator . . . . . A.1.4 The Trigger . . . . . . . . . . . . . A.2 Oscilloscope Input Impedance . . . . . . . A.3 Oscilloscope Probe . . . . . . . . . . . . . A.3.1 Probe Frequency Compensation . A.4 Beam Trajectory . . . . . . . . . . . . . . . A.4.1 CRT Frequency Limit . . . . . . . . 5 5 5 7 8 8 9 9 11 14 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 4 CONTENTS Appendix A The Cathode Ray Tube Oscilloscope A.1 The Cathode Ray Tube Os ...
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OscOne2054TENMARevised
Fayetteville State University, PHY 2054
Excerpt: ... cathode-ray tube" (CRT). This face appears as a circular or rectangular window usually with a centimeter graph superimposed on it. (The picture tube in your TV set and the display terminal of most computers are cathode ray tube s). The cathode-ray tube consists essentially of an "electron gun" for producing a beam of rapidly moving electrons called cathode rays, a fluorescent screen upon which a luminous spot is produced by the impact of the cathode rays, and a means for displacing the spot from its quiescent position as the result of current or voltage applied to the deflecting mechanism. Although the electron beam may be focused by means of magnetic fields, electrostatic focusing is usually used. Figure 5.2 shows the electrode structure of a typical cathode-ray tube having an electron gun with electrostatic focusing. Experiment V - The Oscilloscope and AC Circuitry Figure 5.2 - Cathode ray tube . The electron gun consists of an electron source (i.e., an electrically heated cathode which "boils off" electr ...
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Osci
Fayetteville State University, PHY 2054
Excerpt: ... s face appears as a circular or rectangular window usually with a centimeter graph superimposed on it. (The picture tube in your TV set and the display terminal of most computers are cathode ray tube s). The cathode-ray tube consists essentially of an "electron gun" for producing a beam of rapidly moving electrons called cathode rays, a fluorescent screen upon which a luminous spot is produced by the impact of the cathode rays, and a means for displacing the spot from its quiescent position as the result of current or voltage applied to the deflecting mechanism. Although the electron beam may be focussed by means of magnetic fields, electrostatic focusing is usually used. Figure 5.2 shows the electrode structure of a typical cathode-ray tube having an electron gun with electrostatic focusing. Experiment V - The Oscilloscope and AC Circuitry 16 Figure 5.2 - Cathode ray tube . The electron gun consists of an electron source (i.e., an electrically heated cathode which "boils off" electrons), a grid G for cont ...
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Osci
Fayetteville State University, PHY 2054
Excerpt: ... hode-ray tube" (CRT). This face appears as a circular or rectangular window usually with a centimeter graph superimposed on it. (The picture tube in your TV set and the display terminal of most computers are cathode ray tube s). The cathode-ray tube consists essentially of an "electron gun" for producing a beam of rapidly moving electrons called cathode rays, a fluorescent screen upon which a luminous spot is produced by the impact of the cathode rays, and a means for displacing the spot from its quiescent position as the result of current or voltage applied to the deflecting mechanism. Although the electron beam may be focused by means of magnetic fields, electrostatic focusing is usually used. Figure 5.2 shows the electrode structure of a typical cathode-ray tube having an electron gun with electrostatic focusing. Experiment V - The Oscilloscope and AC Circuitry Figure 5.2 - Cathode ray tube . The electron gun consists of an electron source (i.e., an electrically heated cathode which "boils off" electrons ...
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P008_Prob9
Swarthmore, PHYSICS 008
Excerpt: ... Physics 008 Problem Set #9 Fall 2008 My Lectures from : Purcell Chapter 6 Web Notes : Lecture Notes #4 and #6 Other Notes: Magnetic Fields; Source B Field Purcell Problems: 6.04 Bent wire 6.05 Three wires 6.08 Wire bent in right angle 6.12 Strange bent wire 6.16 Power of superposition 6.17 Solenoids 6.22 Magnetic torque 6.25 Vector potential given a field 6.26 Vector potential for a wire 6.28 Proton path of motion 6.32 Cathode ray tube 1. Transformation of fields - A very large sheet of charge lies in the x-y plane of frame F. The charge per unit length is . In frame F', this sheet moves to the right with speed v. (a) What is the electric field in the rest frame F(above and below the sheet)? (b) What is the electric field in the frame F'(above and below the sheet)? (c) What is the magnetic field in the frame F'(above and below the sheet)? (d) Show that the results of (b) and (c) are consistent with the Lorentz transformations for electric and magnetic fields(Eq 60 of Purcell Chap ...
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Chem155-Sept3-chalkboard
Iowa State, CHEM 155
Excerpt: ... Wednesday, Sept. 3, 2008 Cathode ray tube demonstration shows that electrons are charged particles. Moving charged particles generate a magnetic field, and we showed that the stream of particles in the cathode ray tube can be manipulated with a magnet. JJ Thomson used a cathode ray tube to determine the charge-to-mass ratio of the electron. Three Major Laws: 1) Law of Constant Composition (a.k.a. Law of Definite Proportions) for a given compound, the composition is always the same: the ratio of constituent atoms is constant - water always has 2 H's and 1 O 2) Law of Multiple Proportions different compounds may be formed from the same constituent elements in different, but fixed, compositions or ratios - carbon and oxygen can form CO or CO2 3) Law of Conservation of Mass matter is not created or destroyed in a chemical reaction - the number of atoms of each type on the left side of a chemical equation must equal the number of atoms of that type on the right side Atomic Structure Atoms are made up of pr ...
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ch17
Iowa State, PHYSICS 112
Excerpt: ... ter 17 Capacitance Dielectrics Storage of Electric Energy Cathode Ray Tube : TV and Computer Monitors, Oscilloscope 17.1 Electrostatic Potential Energy and Potential Difference The electrostatic force is conservative potential energy can be defined Change in electric potential energy is negative of work done by electric force: (17-1) 17.1 Electrostatic Potential Energy and Potential Difference Electric potential is defined as potential energy per unit charge: (17-2a) Unit of electric potential: the volt (V). 1 V = 1 J/C. 1 17.1 Electrostatic Potential Energy and Potential Difference Only changes in potential can be measured, allowing free assignment of V = 0. 17.1 Electrostatic Potential Energy and Potential Difference Analogy between gravitational and electrical potential energy: (17-2b) Wba : work done by moving q from a to b. Table 17-1 Some Typical Potential Differences (Voltages) Figure 17-4 Example 17-2 17.2 Relation between Electric Potential and Electric Field Work is charge mul ...
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Chemistry Notes - August 30, 2006 (2.1-2.3)
Kentucky, CHE 105
Excerpt: ... e law of multiple proportions if two elements can combine to form more than one compound, the masses of one element that combine with a fixed mass of the other element are in ratios of small whole numbers. Different compounds made up of the same elements differ in the number of atoms of each kind that combine. Law of conservation of mass matter can be neither created nor destroyed. Section 2.2 Atom the basic unit of an element that can enter into a chemical combination. Atoms actually possess internal structure: they are made up of even smaller particles, which are called "subatomic" particles. Electrons, protons, neutrons The Electron In the 1890's, radiation was a popular scientific study the emission and transmission of energy through space in the form of waves. Cathode ray tube used to investigate radiation a glass tube which most of the air has been evacuated The negatively charged plate cathode emits an invisible ray The cathode ray is drawn to the positively charged plate anode Passes ...
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Exam 2
Iowa State, CHEM 155
Excerpt: ... Study Guide Exam II Chem 155 Fall 2007 1 Exam I will cover portions of chapters 2 (what was not covered on exam I) and 4 (sections 1 & 2 covered in class 10/1) and all of chapter 3 as covered in lecture and recitation. Vocabulary and concepts that you should know and fully understand: cathode ray tube , alpha particles, J. J. Thomson and the cathode ray tube , Milikan's oil drop experiment, Rutherford's gold foil experiment, structural formula, ball and stick model, space-filling model, acids, bases, hydrates, and naming and identification the representative oxyanions and associated acids and derived anions and acids, isotope, atomic mass unit (amu), periodic table or chart, period (row), group or family (column), empirical formula, nomenclature, organic compounds, inorganic compounds, alkane, methane, ethane, propane, average atomic weight (mass), natural isotope abundance (fractional or percent), the mole, Avogadro's number, molar mass, molecular mass or weight, formula mass, mass spectrometer, mas ...
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Exam 1 Study Guide
Iowa State, CHEM 155
Excerpt: ... Study Guide Exam I Chem 155 Fall 2007 1 Exam I will cover chapters 1 & 2 as covered in lecture and recitation. The following will NOT be covered on exam I (but will be covered on Exam II): cathode ray tube , alpha particles, J. J. Thomson and the cathode ray tube , Milikan's oil drop experiment, Rutherford's gold foil experiment, structural formula, ball and stick model, space-filling model, acids, bases, hydrates, and naming and identification the derived anions and acids from oxyanions. Vocabulary and concepts that you should know and fully understand: Chemistry, matter, energy, mass, atom, molecule, element compound, scientific method, scientific law, observations, hypothesis, theory, model, classifications for matter, mixture, homogeneous mixture, heterogeneous mixture, physical methods of separation, physical change, chemical change, physical properties, chemical properties, intensive properties, extensive properties, SI units, metric system, kilogram, meter, second, Kelvin, mole, Amp, micro, de ...
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Case Chapter 3
TN Tech, CHEM 1010
Excerpt: ... Case study (1) Conversion of chemical energy into electrical energy. (2) Conduction of Cathode ray tube experiments & Calculation of the m/z ratio of the electron. (3) Discovery of proton. (4) Oil-drop experiment to calculate the charge of the electron & mass of the electron. (a) Battery (b) J. J. Thomson (c) Millikan (d) Goldstein Q: What is the correct correlation? Case study (1) Conversion of chemical energy into electrical energy. (2) Conduction of Cathode ray tube experiments & Calculation of the m/z ratio of the electron. (3) Discovery of proton. (4) Oil-drop experiment to calculate the charge of the electron & mass of the electron. (5) Alpha particle bombardment experiment for the nuclear model of the atom (a) Battery (b) J. J. Thomson (c) Millikan (d) Goldstein (e) Rutherford Q: What is the correct correlation? Exercise 1. How many neutrons, protons are there in the 35 17 Cl? 2. How many neutrons, protons are there in the 235 92 U? 3. How many neutrons, protons are there in the Br-81 nucleus ...
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Ch400Ch2LN2
American River, CHEM 400-401
Excerpt: ... Chem 400 Chapter 2 Lecture Notes Part 2 Going Further: The Structure of Atoms Dalton thought that atoms were the smallest particle of matter, but through a series of experiments starting in the late 1800's, this was proved to be incorrect. Cathode ray tube s had been developed and were being studied: Cathode rays were discovered to have a _ charge by the following experiment: In 1897, JJ Thomson proposed that cathode "rays" were in fact particles with a negative charge, electrons! Thomson also discovered that it didn't matter what the cathode material was composed of, identical electrons were given off. Thomson also conducted a series of experiments where he varied the strength of the electric and magnetic fields and carefully measured the amount of deflection of the electron beam. Thomson was able to determine the _ratio of an electron, 1.758 C/g. However, scientists wanted to know the actual charge and mass, not just the ratio. In 1909, Robert Millikan conduc ...
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lab 4-241
Arizona, PHYS 241
Excerpt: ... Matt Weiner Phys. 241 Lab Lab Partner: Phillip Hoffman 9/26/06 Acceleration Of Electrons In A Cathode Ray Tube , CRT Goal: To study the motion of electrons in electric fields using a cathode ray tube . Theory: This experiment basically is just throwing electrons through electric fields. This is done inside a Cathode Ray Tube , or CRT, that was designed to be used in an oscilloscope. To reduce collisions between the electrons and gas molecules, there is a vacuum inside of the CRT. A cathode inside the CRT emits electrons when it is heated by the heater filament. These electrons are accelerated along the axis of the CRT by an electric field. Because the electrons are nearly at rest initially, one can calculate the velocity of eh electrons after this acceleration from conservation of energy. K .E. = P.E. Where K.E. is the kinetic energy and P.E. is the potential energy. This gives: 1 me v z2 = eVz 2 (2) (1) Vz is the potential difference or voltage difference that the electron has dropped through; e ...
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Lab_1
Brandeis, PHYS 18b
Excerpt: ... Introduction/Objective: The objective of this experiment is to become familiar with what the oscilloscope does and how it works Method: For both experiments, the apparatus used is the oscilloscope, which consists of the cathode-ray tube as the indica ...
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