Basic Units

• 1A10.10 - Metric vs. English Demos
• 1A10.30 - Metric vs. English Demos - Yard & Meter - Ruler Scales
• 1A10.36 - 1 Nanosecond
• 1A10.37 - Significant Digits
• 1A10.38 - Body Units -- Estimating Length
• 1A10.40 - Clocks
• 1A10.41 - Geochron
• 1A10.42 - Atomic Clocks
• 1A10.45 - WWV Signal
• 1A10.49 - 24 Hr Sidereal Clock
• 1A10.50 - Metric vs. English Demos--Quart & Liter
• 1A10.51 - Cubic Meter
• 1A10.57 - Volume Relationship
• 1A10.60 - Avogadro's Number
• 1A10.80 - Metric vs. English Demos - Temp Scales

Error and Accuracy

• 1A20.10 - Gaussian Probability Curve - Bell Curve - Galton Board
• 1A20.20 - Statistics and Probability - Coin Flip
• 1A20.22 - Statistics and Probability - The Monty Hall Problem
• 1A20.25 - Statistics and Probability - Dice
• 1A20.27 - Statistics and Probability - Ping Pong Balls
• 1A20.28 - Statistics and Probability - Chirality
• 1A20.30 - Statistics and Probability - Sports
• 1A20.40 - Calipers
• 1A20.41 - Vernier Calipers - Vernier Scale
• 1A20.46 - Optical Flat

Coordinate Systems

• 1A30.40 - Chalk Globe

Vectors

• 1A40.10 - Vector Demos

Math Topics

• 1A50.10 - Radian Disk
• 1A50.20 - Optical Lever Arms
• 1A50.40 - Analog Calculator
• 1A50.60 - Dirac Strings
• 1A50.70 - Slide Rules
• 1A50.75 - Curved Surfaces
• 1A50.85 - Topology - Cosmic Coil
• 1A50.90 - Math Toys - Rubik's Cube
• 9A10.12 - Protractors

Scaling

• 1A60.10 - Powers of 10
• 1A60.15 - Scaling - Drawing in Perspective
• 1A60.22 - Scaling - Zoological Domain
• 1A60.45 - Hoberman Devices

Velocity

• 1C10.05 - Ultrasonic Detector & Student - Car
• 1C10.10 - Car on a Moving Sheet - Velocity Addition and Subtraction
• 1C10.20 - Dynamics Carts - Pasco
• 1C10.25 - Air Track - Constant Velocity
• 1C10.62 - Time of Flight

Uniform Acceleration

• 1C20.10 - Free-Fall in a Vacuum (Penny and Feather Demo)
• 1C20.15 - Free-Fall - Dropping Balls
• 1C20.16 - Free-Fall - Drop a Ball and Paper
• 1C20.18 - Free-Fall and Air Resistance
• 1C20.20 - Free-Fall - Time Intervals
• 1C20.30 - Inclined Air Track - Timed Intervals
• 1C20.37 - Inclined Tracks - Timed Intervals
• 1C20.40 - Inclined Track - Timed Intervals
• 1C20.75 - Fan Carts

Measuring g

• 1C30.16 - Free-Fall Apparatus
• 1C30.35 - Picket Fence and Photogate
• 1C30.42 - Falling Drops
• 1C30.55 - Reaction Times
• 1C30.57 - Balance A Stick - Reaction Time

Displacement in Two Dimensions

• 1D10.11 - Vector Toys
• 1D10.15 - Car on a Moving Sheet - Velocity Addition
• 1D10.20 - Bicycle Wheel - Cycloid Generator
• 1D10.40 - Angular Velocity - Bicycle Wheel

Velocity, Position, and Acceleration

• 1D15.20 - High Road Low Road
• 1D15.36 - Ball & Incline Demos
• 1D15.50 - Brachistochrone
• 1D15.53 - Cycloid Track

Motion of the Center of Mass

• 1D40.12 - Hammer
• 1D40.15 - Bola
• 1D40.30 - Baton
• 1D40.35 - Binary System
• 1D40.50 - Air Track Pendulum

Central Forces

• 1D50.20 - Whirligig/Twirling Weights
• 1D50.25 - Conical Pendulum
• 1D50.26 - Conical Pendulum - Flying Pig on a String
• 1D50.28 - Carnival Ride Model - Swing Ride
• 1D50.30 - Carnival Ride Model - Cylinder
• 1D50.33 - Central Forces - Carry a Ball
• 1D50.40 - Central Forces - Pail of Water - Wine Butler/Waiter's Tray
• 1D50.45 - Central Forces - Penny & Coat Hanger
• 1D50.50 - Central Forces - Centripetal Force
• 1D50.52 - Central Forces - Centripetal Force - 1 to 4 mass ratio
• 1D50.57 - Central Forces - Ball on Hoop
• 1D50.60 - Banked Track
• 1D50.69 - Central Forces Puzzle

Deformation by Central Forces

• 1D52.10 - Central Forces - Centrifugal Flattening
• 1D52.20 - Water Parabola
• 1D52.30 - Water Centrifuge with Cork and Balls
• 1D52.33 - Rotating Floats in Water
• 1D52.37 - Centrifuge
• 1D52.40 - Rotating Candle

Centrifugal Escape

• 1D55.10 - Central Forces - Broken Ring
• 1D55.15 - Central Forces - T-Ball on a String
• 1D55.20 - Tangential Central Forces - Grinding Wheel & Sparks
• 1D55.30 - Falling Off The Merry-Go-Round

Projectile Motion

• 1D60.10 - Property of Inertia Demo - Jeep & Gun
• 1D60.12 - Property of Inertia - Air Track
• 1D60.20 - Simultaneous Fall - 2nd Law Apparatus
• 1D60.30 - Shoot the Monkey
• 1D60.40 - Projectile Motion - Spring Gun
• 1D60.55 - Parabolic Trajectory on an Incline Plane
• 1D60.56 - Parabolic Trajectory - Block and Tables
• 1D60.70 - Parabolic Trajectory - Bomb Run
• 1D60.75 - Parabolic Falling Droplets - Blood Spatter
• 1D60.90 - Projectile Motion - "Newton's Cannon" Computer Simulations

Moving Reference Frames

• 1E10.10 - Frames of Reference - Car and Moving Sheet
• 1E10.20 - Frames of Reference
• 1E10.21 - Frames of Reference - Ballistic Cart & Camera
• 1E10.31 - Ruler on a Wheel or Cylinder

Rotating Reference Frames

• 1E20.10 - Foucault Pendulum
• 1E20.17 - Spirograph
• 1E20.21 - Rotating Frame - O.H. Transparency Model

Coriolis Effect

• 1E30.28 - Coriolis Effect

Measuring Inertia

• 1F10.10 - Inertial Balance
• 1F10.15 - Oscillation Balance

Inertia of Rest

• 1F20.10 - Inertia of Rest - Mass and String
• 1F20.11 - Inertia of Rest - Bowling Ball
• 1F20.13 - Inertia of Rest - Paper - Tug of War
• 1F20.14 - Inertia of Rest - Tissue Paper Roll
• 1F20.20 - Smash Your Hand
• 1F20.25 - Bed of Nails - Smash a Block
• 1F20.30 - Inertia of Rest - Glass of Water
• 1F20.33 - Inertia of Rest - Cylinder
• 1F20.34 - Inertia of Rest - Coin/Card Snap - Daruma Otoshi
• 1F20.35 - Egg and Pizza Pan
• 1F20.36 - Embroidery Hoop and Pen
• 1F20.40 - Stick and Wine Glasses
• 1F20.55 - Inertia of Rest - Inertia Hat
• 1F20.60 - Tighten a Hammer Head - Knife & Potato

Inertia of Motion

• 1F30.20 - Inertia of Motion - Standing Pulse - Chain
• 1F30.21 - Water Hammer
• 1F30.25 - Inertia of Motion - Air Track & Homer
• 1F30.40 - Drive a Nail by Hand

Force, Mass, and Acceleration

• 1G10.10 - Uniform Acceleration due to Earth's Gravity - Air Track
• 1G10.30 - Acceleration - Mass on a Scale
• 1G10.40 - Atwood's Machine
• 1G10.47 - Modified Atwoods Machine
• 1G10.51 - Car vs. Motorcycle vs. Jet Acceleration

Accelerated Reference Frames

• 1G20.10 - Candle in a Bottle
• 1G20.21 - Cartesian Diver Drop
• 1G20.30 - Leaky Cup Drop
• 1G20.38 - Einstein's Birthday Present
• 1G20.40 - Springs & Weights or Bucket & Elastic
• 1G20.45 - Dropped Slinky
• 1G20.50 - Magnet & Keeper
• 1G20.60 - Elevator Physics
• 1G20.70 - Uniform Acceleration - Liquid Accelerometer & Dynamics Cart
• 1G20.76 - Float Accelerometer - Suspended Ball or Balloon Accelerometers
• 1G20.79 - Accelerometer - Vibrating Ruler & Coin plus Others

Complex Systems

• 1G30.30 - Hourglass

Action and Reaction

• 1H10.10 - Push Me - Pull Me Carts
• 1H10.15 - Action-Reaction on Air Track
• 1H10.20 - Fan Cart & Sails
• 1H10.25 - Helicopter Rotor
• 1H10.30 - Rocket Car
• 1H10.35 - Bend a Wall
• 1H10.40 - Burp Gun & Potato Gun

Recoil

• 1H11.10 - Cart & Medicine Ball
• 1H11.20 - Tennis Ball Cannon - T-Shirt Cannon

Large Scale Outdoor Measurements

• 1I10.10 - Amusement Park Physics
• 1I10.20 - Physics of Automobiles
• 1I10.30 - Measurements in Airplanes or Jets
• 1I10.40 - Physics of Trains
• 1I10.42 - Friction and Trains
• 1I10.50 - Physics of Ships

Finding Center of Gravity

• 1J10.09 - Center of Mass Demo
• 1J10.10 - Map of a State
• 1J10.12 - Wooden Plates
• 1J10.25 - Weight of a Meter Stick / Torque Method
• 1J10.30 - Meter Stick on Fingers
• 1J10.33 - Balancing Coin
• 1J10.35 - Meterstick on Rotating Shafts

Exceeding Center of Gravity

• 1J11.10 - Leaning Tower Demo
• 1J11.15 - Incline and Tipping Block
• 1J11.20 - 2 x 4 Tower
• 1J11.30 - Tipping Boat
• 1J11.40 - Human Center of Gravity

Stable, Unstable, and Neutral Equilibrium

• 1J20.05 - Gömböc - Stable and Unstable Equilibrium
• 1J20.10 - Stable, Unstable, and Neutral Equilibrium
• 1J20.30 - Sky Hook
• 1J20.31 - Hinged Stick Paradox
• 1J20.32 - Hang Spoon on Nose
• 1J20.35 - Bird, Plane, and Circus Clown
• 1J20.60 - Wine Butler
• 1J20.65 - Balancing Soda Can
• 1J20.70 - Rolling Uphill
• 1J20.80 - Rolling Cylinders - Train Wheels Rims

Resolution of Forces

• 1J30.10 - Resolution of Forces on an Inclined Plane
• 1J30.20 - Tension in a String
• 1J30.22 - Tension in a Spring
• 1J30.23 - Tension in a Spring - Parallel and Series Scales
• 1J30.25 - Forces on a String - Three Students and a Rope
• 1J30.30 - Break a Wire With a Hinge
• 1J30.50 - Force Table, Vertical and Horizontal
• 1J30.60 - Sailing Against the Wind - Air Track
• 1J30.70 - Rice in a Tube
• 1J30.75 - Stand on Eggs

Static Torque

• 1J40.10 - Grip Bar
• 1J40.15 - Torque Wrench
• 1J40.20 - Torque Beam
• 1J40.40 - Loaded Beam
• 1J40.50 - Roberval Balance
• 1J40.70 - Crane and Crane Boom

Dynamic Torque

• 1K10.20 - Ladder Forces
• 1K10.30 - Walk The Spool
• 1K10.40 - Tricycle
• 1K10.50 - Rolling a Disc Uphill

Friction

• 1K20.10 - Friction Blocks
• 1K20.11 - Tug of War
• 1K20.14 - Variable Friction - Dynamics Track or Air Track
• 1K20.25 - Phone Book Friction
• 1K20.35 - Inclined Plane - Angle of Repose
• 1K20.36 - Inclined Plane - Acceleration of a Block
• 1K20.37 - Static Friction - Rolling Wheel
• 1K20.42 - Rolling and Sliding Friction
• 1K20.70 - Falling Bottle Capstan
• 1K20.76 - Climbing Monkey
• 1K20.90 - Air Track/Platform Friction

Pressure

• 1K30.10 - Bed of Nails - Stand on Dixie Cups

Universal Gravitational Constant

• 1L10.30 - Cavendish Balance

Orbits

• 1L20.10 - Gravity Well - Black Hole
• 1L20.25 - String Unwinding From a Pole - Relaxation Oscillator
• 1L20.30 - Escape Velocity (Escape from a Gravity Well)
• 1L20.40 - Conical Sections
• 1L20.50 - Ellipse Maker
• 1L20.60 - Kepler's Laws
• 1L20.66 - Orbits on the Overhead/Mass Spectrometer Model

Work

• 1M10.10 - Ball or Block on a Shelf
• 1M10.16 - Lift or Carry a Block
• 1M10.20 - Pile Driver

Simple Machines

• 1M20.11 - Pulleys and Pulley Systems
• 1M20.20 - Block & Tackle
• 1M20.36 - Work of a Screw
• 1M20.37 - Archimedes' Screw
• 1M20.40 - 1st, 2nd, and 3rd Class Levers
• 1M20.60 - Wheel & Axle
• 1M20.65 - Non-Circular Wheels

Non-Conservative Forces

• 1M30.30 - Wood Pecker

Conservation of Energy

• 1M40.10 - Large Classroom Pendulum
• 1M40.12 - Tension in a Pendulum String
• 1M40.15 - Stopped Pendulum
• 1M40.20 - Loop-the-Loop
• 1M40.25 - Gravity Rail with Hill - Potential Wells
• 1M40.30 - Gravity Rail
• 1M40.37 - Slingshots
• 1M40.41 - Ballistic Pendulum
• 1M40.42 - Ballistic Pendulum - Sliding Block
• 1M40.43 - Work of a Bow or Crossbow
• 1M40.50 - Yo-Yo's and Maxwell's Wheel - Speed of Translation
• 1M40.63 - Spring = X-Squared Energy Dependence
• 1M40.64 - Spring Gun and Dart Set - Air Track & Carts
• 1M40.65 - Spring Gun and Balls of Different Mass
• 1M40.67 - Spring Jumper & Compression Spring
• 1M40.73 - Air Track - Damped Mechanical Oscillator - Energy
• 1M40.74 - Incline and Cart
• 1M40.90 - Celts or Rattle Backs
• 1M40.91 - High Bounce Paradox - Hopper Popper, Jumping Pencil, Slap Bracelet, etc.
• 1M40.94 - Fiddlesticks or Gyro Ring, and Hula Hoop
• 1M40.95 - Trebuchet
• 1M40.97 - Catapult
• 1M40.99 - Onager

Mechanical Power

• 1M50.20 - Bicycle Power - Bicycle Drive Train

Impulse and Thrust

• 1N10.11 - Impulse - Time of contact
• 1N10.20 - Eggs in a Sheet
• 1N10.30 - Impulse Demo - Dropping Beaker/Eggs
• 1N10.75 - Pulse Jet Engine

Conservation of Linear Momentum

• 1N20.10 - See-Saw Center of Mass
• 1N20.15 - Center of Mass - Platform
• 1N20.20 - Conservation of Linear Momentum - Air Track
• 1N20.40 - Pop Pop Boat

Mass and Momentum Transfer

• 1N21.20 - Air Track - Mass & Momentum Transfer

Rockets

• 1N22.00 - Rockets
• 1N22.10 - Rocket Car - Fire Extinguisher
• 1N22.20 - Water Rocket
• 1N22.23 - Air Track - Air Track Rocket
• 1N22.25 - Balloon Rockets
• 1N22.33 - Rocket Car - Little Cart
• 1N22.35 - Pop Bottle Alcohol Rocket
• 1N22.51 - Firehose Instability
• 1N22.90 - Altitude or Height Measurments

Collisions in One Dimension

• 1N30.10 - Newton Spheres, Clackers
• 1N30.15 - Newton's Trough
• 1N30.21 - Elastic & Inelastic Collision of Solids - Balls
• 1N30.30 - Elastic & Inelastic Collision of Solids - Air Track
• 1N30.45 - Inelastic Collision - Speed of a Ball
• 1N30.50 - Impulse Demo - Elastic and Inelastic Pendulum
• 1N30.60 - Tennis Ball and Basketball
• 1N30.62 - Multiple Ball Drop - Astro-Blaster (TM)

Collisions in Two Dimensions

• 1N40.15 - Coin Collisions
• 1N40.20 - Air Table Collisions
• 1N40.60 - Superball

Moment of Inertia

• 1Q10.10 - Inertial Wands
• 1Q10.30 - Moments of Inertia - Hoops and Disks
• 1Q10.65 - Moment of Inertia of a Ball
• 1Q10.75 - Parallel Axis Wheels

Rotational Energy

• 1Q20.10 - Angular Momentum Machine
• 1Q20.15 - Angular Momentum - Rotating Air Table
• 1Q20.20 - Moments of Inertia - Angular Acceleration Wheel
• 1Q20.30 - Rolling Spool - Axles
• 1Q20.46 - Moments of Inertia - Energy of Translation
• 1Q20.50 - Falling Chimney
• 1Q20.65 - Falling Pencil or Rod

Transfer of Angular Momentum

• 1Q30.40 - Fluctuating Magnetic Fields/Cons. of Angular Momentum
• 1Q30.90 - Magic Windmill

Conservation of Angular Momentum

• 1Q40.10 - Cons. of Angular Momentum Demo - Stool and Weights
• 1Q40.20 - Cons. of Angular Momentum Demos - Squeezatron
• 1Q40.22 - Conservation of Angular Momentum - Hoberman Sphere
• 1Q40.30 - Cons. of Angular Momentum Demo - Stool and Bicycle Wheel
• 1Q40.40 - Action-Reaction Demo - Train Demo
• 1Q40.50 - Action-Reaction Demo - Pocket Watch - Tail Wags the Dog
• 1Q40.57 - Cons. of Angular Momentum - Air Table
• 1Q40.60 - Cons. of Angular Momentum - Ball or Cylinder Paper Pull
• 1Q40.70 - Cons. of Angular Momentum - Vortex Cone
• 1Q40.85 - Feynman Reverse Sprinkler
• 1Q40.90 - Acoustic Propulsion - Feynman Sprinkler (Acoustic Version)

Gyros

• 1Q50.01 - Precession - Bicycle Wheels, Gyroscopes, and Tops
• 1Q50.20 - Bicycle Wheel - On Stand
• 1Q50.21 - Bicycle Wheels - Suspended
• 1Q50.25 - Double Wheel Gyro
• 1Q50.40 - Suitcase Gyro
• 1Q50.56 - Ball On A Rotating Turntable
• 1Q50.70 - Gyroscopes
• 1Q50.72 - Gyroscopes - Ship Stabilizer
• 1Q50.90 - Maxwell's Tops

Rotational Stability

• 1Q60.16 - Old Fashioned Top
• 1Q60.25 - Euler's Disk & Wobbler
• 1Q60.30 - Tippy Top
• 1Q60.35 - Football
• 1Q60.36 - Spinning Eggs
• 1Q60.38 - Spinning Double Spheres
• 1Q60.40 - Stable and Unstable Axis of Rotation - Toss the Block
• 1Q60.51 - Spinning Loop - String Shooter
• 1Q60.81 - Dynamic Balancing - Tensor
• 1Q60.85 - Balancing - Spin a Penny

Hooke's Law

• 1R10.10 - Hooke's Law Demo
• 1R10.15 - The Suspended Slinky

Tensile and Compressive Stress

• 1R20.11 - Stress - Elastic Limits
• 1R20.15 - Young's Modulus
• 1R20.28 - Smashing Spheres - Aluminum Foil
• 1R20.70 - Prince Rupert's Drops

Shear Stress

• 1R30.20 - Shear - Foam Block
• 1R30.21 - Shear - Bend a Rod
• 1R30.30 - Shear - Spring Cubes, Crystal Lattice
• 1R30.40 - Horizontal Torsion Apparatus - Rod

Coefficient of Restitution

• 1R40.10 - Coefficient of Restitution
• 1R40.30 - Happy - Unhappy Balls

Crystal Structure

• 1R50.20 - Crystal Models and Lattices
• 1R50.24 - Crystals - Mirror Images and Symmetry
• 1R50.30 - Crystals, Crystal Structure, Atomic Planes, & Metals
• 1R50.31 - Snow and Ice Crystals
• 1R50.40 - Faults in a Crystal
• 9C40.40 - Fused Quartz