Lab
A Photoelectric Effect Analogy
Printer Friendly Version
It is possible to visualize some of the concepts in the photoelectric effect by using colliding balls to represent scattering particles and obstacles to represent energy thresholds. In order to illustrate the concept in a clearer way, a life-size model of a photon ejecting an electron has been constructed. The model consists of the following:
An inclined track to roll a metal 1"-diameter metal ball down
PVC tubes cut to approximately 7"-lengths with thin rubber bottoms
One metal 1"-diameter ball
Two collisions ball: plastic, aluminum, brass, or wood
Additional equipment needed:
3 hot wheel's track sections
masking tape
meter sticks
white target paper with carbon paper to mark impact positions
2 metal stands
2 test-tube clamps
2 c-clamps
plumb line
triple beam balance
protractor
Procedure
The collisions balls will be inserted individually into the tube so that they rest against the tube's rubber bottom
The tube is then mounted at the end of the track, with approximately one centimeter of track extending beyond the end of the tube.
The 1"-diameter metal is placed at various heights along the track and is released to roll down the track and collide with the bottom of the PVC tube
The collision ball resting on the inside of the rubber bottom feels the collision of the metal ball and bounces upwards.
If the collision ball bounces free of the tube, record its impact position on the floor.
Masses
Record the masses of any two of the following collision balls
wooden ball (kg)
plastic ball (kg)
brass ball (kg)
aluminum ball (kg)
General Data
After each group has built their "photoelectric apparatus" you need to measure the following values:
Height of table top
Angle of PVC tube
Length of PVC tube
Height of bottom of PVC tube above the table
height of the table (m)
angle of PVC tube (degrees)
length of PVC tube (m)
height of bottom of PVC tube above table top (m)
Experimental Data
You are to release your metal ball from a minimum of 7 heights, repeating each height two times (or more if your results are inconsistent). Each recorded trial should represent a "good hit."If the collision ball "escapes" from the PVC, record its range. If it leaves the tube but remains on the 1-centimeter lip, record the range as zero. If its doesn't escape at all, record its range as NULL. You should only record one NULL result and perhaps one zero result. The other five heights should have mmeasureable ranges. Repeat with a second type of collision ball.
Group I: Collision ball used
Plastic
Aluminum
Brass
Wood
trial
release height
(m)
range
(m)
position 1
position 1
position 2
position 2
position 3
position 3
position 4
position 4
position 5
position 5
position 6
position 6
position 7
position 7
Group II: Collision ball used
Plastic
Aluminum
Brass
Wood
trial
release height
(m)
range
(m)
position 1
position 1
position 2
position 2
position 3
position 3
position 4
position 4
position 5
position 5
position 6
position 6
position 7
position 7
Analysis and Conclusions
Once all of your trials have been completed and your ranges measured, you will open the EXCEL file 1-PhotoelectricAnalogy.xls and enter your averages for each trial for each collision ball. Note that there are two worksheets in the workbook.
When your spreadsheet is complete, obtain printouts and then answer these conclusions.
Which particle does the metal ball represent?
photon
photo-electron
What property of the metal ball were you changing by placing it higher or lower on the track?
What effect does this represent in the photoelectric effect equation?
What does the tilted height of the PVC tube represent in the photoelectric effect equation?
What property were you changing with the second collision ball?
How could you have modeled that metal plate’s surface has many electrons?
Related Documents
Lab:
Labs -
A Battering Ram
Labs -
Acceleration Down an Inclined Plane
Labs -
Air Track Collisions
Labs -
Ballistic Pendulum
Labs -
Ballistic Pendulum: Muzzle Velocity
Labs -
Basic Particles
Labs -
Bouncing Steel Spheres
Labs -
Coefficient of Friction
Labs -
Coefficient of Kinetic Friction (pulley, incline, block)
Labs -
Collision Pendulum: Muzzle Velocity
Labs -
Conservation of Energy and Vertical Circles
Labs -
Conservation of Momentum
Labs -
Conservation of Momentum in Two-Dimensions
Labs -
Cookie Sale Problem
Labs -
Experimental Radius
Labs -
Flow Rates
Labs -
Freefall Mini-Lab: Reaction Times
Labs -
Freefall: Timing a Bouncing Ball
Labs -
Galileo Ramps
Labs -
Gravitational Field Strength
Labs -
Home to School
Labs -
Hydrogen Spectrum
Labs -
Hydrogen Spectrum
Labs -
Impulse
Labs -
Inelastic Collision - Velocity of a Softball
Labs -
InterState Map
Labs -
LAB: Ramps - Accelerated Motion
Labs -
LabPro: Newton's 2nd Law
Labs -
LabPro: Uniformly Accelerated Motion
Labs -
Loop-the-Loop
Labs -
Mass of a Rolling Cart
Labs -
Mass of an Electron
Labs -
Mass of the Top Quark
Labs -
Mirror Symmetry
Labs -
Moment of Inertia of a Bicycle Wheel
Labs -
Monkey and the Hunter Animation
Labs -
Monkey and the Hunter Screen Captures
Labs -
Projectiles Released at an Angle
Labs -
Quantized Mass
Labs -
Radiation of a Metal Cylinder
Labs -
Ramps: Sliding vs Rolling
Labs -
Range of a Projectile
Labs -
Roller Coaster, Projectile Motion, and Energy
Labs -
Rotational Inertia
Labs -
Rube Goldberg Challenge
Labs -
Spring Carts
Labs -
Target Lab: Ball Bearing Rolling Down an Inclined Plane
Labs -
Terminal Velocity
Labs -
Using Young's Equation - Wavelength of a Helium-Neon Laser
Labs -
Video LAB: A Gravitron
Labs -
Video Lab: Ball Bouncing Across a Stage
Labs -
Video LAB: Ball Re-Bounding From a Wall
Labs -
Video Lab: Blowdart Colliding with Cart
Labs -
Video Lab: Cart Push #2 and #3
Labs -
Video LAB: Circular Motion
Labs -
Video Lab: Falling Coffee Filters
Labs -
Video Lab: M&M Collides with Pop Can
Labs -
Video Lab: Marble Collides with Ballistic Pendulum
Labs -
Video Lab: Two-Dimensional Projectile Motion
Resource Lesson:
RL -
A Further Look at Impulse
RL -
Accelerated Motion: A Data Analysis Approach
RL -
Accelerated Motion: Velocity-Time Graphs
RL -
An Outline: Dual Nature of Light and Matter
RL -
Analyzing SVA Graph Combinations
RL -
APC: Work Notation
RL -
Atomic Models and Spectra
RL -
Average Velocity - A Calculus Approach
RL -
Chase Problems
RL -
Chase Problems: Projectiles
RL -
Comparing Constant Velocity Graphs of Position-Time & Velocity-Time
RL -
Conservation of Energy and Springs
RL -
Constant Velocity: Position-Time Graphs
RL -
Constant Velocity: Velocity-Time Graphs
RL -
Derivation of Bohr's Model for the Hydrogen Spectrum
RL -
Derivation of the Kinematics Equations for Uniformly Accelerated Motion
RL -
Derivatives: Instantaneous vs Average Velocities
RL -
Directions: Flash Cards
RL -
Energy Conservation in Simple Pendulums
RL -
Energy-Level Diagrams
RL -
Excitation
RL -
Famous Discoveries and Experiments
RL -
Famous Discoveries: Bohr Model
RL -
Famous Discoveries: de Broglie Matter Waves
RL -
Famous Discoveries: The Franck-Hertz Experiment
RL -
Famous Discoveries: The Photoelectric Effect
RL -
Famous Experiments: Davisson-Germer
RL -
Famous Experiments: Michelson-Morley
RL -
Famous Experiments: Millikan's Oil Drop
RL -
Famous Experiments: The Compton Effect
RL -
Famous Experiments: The Discovery of the Neutron
RL -
Freefall: Horizontally Released Projectiles (2D-Motion)
RL -
Freefall: Projectiles in 1-Dimension
RL -
Freefall: Projectiles Released at an Angle (2D-Motion)
RL -
Gravitational Energy Wells
RL -
Linear Momentum
RL -
Mechanical Energy
RL -
Momentum and Energy
RL -
Monkey and the Hunter
RL -
Nuclear Reaction
RL -
Potential Energy Functions
RL -
Principal of Least Action
RL -
Rotational Dynamics: Pivoting Rods
RL -
Rotational Kinetic Energy
RL -
Springs and Blocks
RL -
Summary: Graph Shapes for Constant Velocity
RL -
Summary: Graph Shapes for Uniformly Accelerated Motion
RL -
SVA: Slopes and Area Relationships
RL -
Symmetries in Physics
RL -
Tension Cases: Four Special Situations
RL -
Vector Resultants: Average Velocity
RL -
What is Mass?
RL -
Work
RL -
Work and Energy
REV -
Orbitals
Review:
REV -
Test #1: APC Review Sheet
Worksheet:
APP -
Eternally Bohring
APP -
Hackensack
APP -
Nuclear Flu
APP -
Puppy Love
APP -
The Baseball Game
APP -
The Big Mac
APP -
The Cemetary
APP -
The Golf Game
APP -
The Jogger
APP -
The Pepsi Challenge
APP -
The Pet Rock
APP -
The Pool Game
APP -
The Raft
APP -
The Science Fair
APP -
The Spring Phling
APP -
What's My Line
CP -
2D Projectiles
CP -
Atomic Nature of Matter
CP -
Atomic Nucleus and Radioactivity
CP -
Balancing Nuclear Equations
CP -
Conservation of Energy
CP -
Conservation of Momentum
CP -
Dropped From Rest
CP -
Freefall
CP -
Momentum
CP -
Momentum and Energy
CP -
Momentum and Kinetic Energy
CP -
Momentum Practice Problems
CP -
Momentum Systems and Conservation
CP -
Natural Transmutations
CP -
Non-Accelerated and Accelerated Motion
CP -
Nuclear Fission and Fusion
CP -
Power Production
CP -
Radioactive Half Life
CP -
Satellites: Circular and Elliptical
CP -
The Atom and the Quantum
CP -
Tossed Ball
CP -
Up and Down
CP -
Work and Energy
NT -
Atomic Number
NT -
Average Speed
NT -
Back-and-Forth
NT -
Beta Decay
NT -
Binding Energy
NT -
Black Holes
NT -
Cliffs
NT -
Crosswinds
NT -
Electrostatic Attraction
NT -
Elliptical Orbits
NT -
Escape Velocity
NT -
General Relativity
NT -
Gravitation #2
NT -
Headwinds
NT -
Helium Balloons
NT -
Hot Springs
NT -
Hydrogen Atom
NT -
Hydrogen Fusion
NT -
Ice Boat
NT -
Momentum
NT -
Monkey Shooter
NT -
Nuclear Equations
NT -
Pendulum
NT -
Photoelectric Effect
NT -
Projectile
NT -
Radiant Energy
NT -
Radioactive Cookies
NT -
Ramps
NT -
Satellite Positions
NT -
The Ax Handle
NT -
Uranium Decay
NT -
Uranium Fission
RL -
Chapter 3: Electrons
WS -
Accelerated Motion: Analyzing Velocity-Time Graphs
WS -
Accelerated Motion: Graph Shape Patterns
WS -
Accelerated Motion: Practice with Data Analysis
WS -
Advanced Properties of Freely Falling Bodies #1
WS -
Advanced Properties of Freely Falling Bodies #2
WS -
Advanced Properties of Freely Falling Bodies #3
WS -
Atomic Models and Spectra
WS -
Average Speed and Average Velocity
WS -
Average Speed Drill
WS -
Charged Projectiles in Uniform Electric Fields
WS -
Chase Problems #1
WS -
Chase Problems #2
WS -
Chase Problems: Projectiles
WS -
Combining Kinematics and Dynamics
WS -
Constant Velocity: Converting Position and Velocity Graphs
WS -
Constant Velocity: Position-Time Graphs #1
WS -
Constant Velocity: Position-Time Graphs #2
WS -
Constant Velocity: Position-Time Graphs #3
WS -
Constant Velocity: Velocity-Time Graphs #1
WS -
Constant Velocity: Velocity-Time Graphs #2
WS -
Constant Velocity: Velocity-Time Graphs #3
WS -
Converting s-t and v-t Graphs
WS -
Energy Level Diagrams
WS -
Energy Methods: More Practice with Projectiles
WS -
Energy Methods: Projectiles
WS -
Energy/Work Vocabulary
WS -
Force vs Displacement Graphs
WS -
Freefall #1
WS -
Freefall #2
WS -
Freefall #3
WS -
Freefall #3 (Honors)
WS -
Horizontally Released Projectiles #1
WS -
Horizontally Released Projectiles #2
WS -
Introduction to Springs
WS -
Kinematics Along With Work/Energy
WS -
Kinematics Equations #1
WS -
Kinematics Equations #2
WS -
Kinematics Equations #3: A Stop Light Story
WS -
Lab Discussion: Gravitational Field Strength and the Acceleration Due to Gravity
WS -
Parallel Reading - The Atom
WS -
Position-Time Graph "Story" Combinations
WS -
Potential Energy Functions
WS -
Practice: Momentum and Energy #1
WS -
Practice: Momentum and Energy #2
WS -
Practice: Vertical Circular Motion
WS -
Projectiles Released at an Angle
WS -
Rotational and Reflection Symmetries
WS -
Rotational Kinetic Energy
WS -
Standard Model: Particles and Forces
WS -
Static Springs: The Basics
WS -
SVA Relationships #1
WS -
SVA Relationships #2
WS -
SVA Relationships #3
WS -
SVA Relationships #4
WS -
SVA Relationships #5
WS -
Work and Energy Practice: An Assortment of Situations
WS -
Work and Energy Practice: Forces at Angles
TB -
2A: Introduction to Motion
TB -
2B: Average Speed and Average Velocity
TB -
38A: Atomic Physics
TB -
Antiderivatives and Kinematics Functions
TB -
Half-Life Properties
TB -
Honors: Average Speed/Velocity
TB -
Kinematics Derivatives
TB -
Projectile Summary
TB -
Projectile Summary
TB -
Projectiles Mixed (Vertical and Horizontal Release)
TB -
Projectiles Released at an Angle
TB -
Set 3A: Projectiles
TB -
Work, Power, Kinetic Energy
PhysicsLAB
Copyright © 1997-2024
Catharine H. Colwell
All rights reserved.
Application Programmer
Mark Acton