------------------------------------------------------------------------ PHY 231 Recommended demos ------------------------------------------------------------------------ Wk Topics and Demos 01 Units and Measurements - Basic metric units - Coordinate system - Powers of ten (video) 02 Motion in One Dimension - Frames of reference (video) - Constant velocity motion on the air track - Uniform acceleration on the air track - Sound of constant acceleration - Feather and coin 03 Motion in Two Dimensions - Handheld vectors - Pop and drop - Ballistic cart - Shoot the monkey - Racing balls 04 Newton's Laws, Force and Motion - Newton's first law - Newton's second law - Newton's third law - Broken hand - Bungee jumpers - Sliding block - Dragging the box - Angle of repose 05 Kinetic Energy, Work and Power - Lifting weight - Piledriver - Racing ball (single) - Saving face - Jumping spider - Energy bike: work and power 06 Momentum and Collisions - Time of elastic collision - Inelastic collision of velcro carts on air track - Ballistic pendulum - Newton's balls - Ninja balls - Elastic collision of unequal (3:1) masses - Coefficient of restitution - Superball and clayball 07 Circular Motion - Rotating cylinder - Radians - Whirligig - Leaving circular orbit (ohp) - Conical pendulum - Loop the loop - Newton and apple (video) - Cavendish balance - Drawing an ellipse 08 Rotation - Where's the doorknob? - Short and long wrench - Irregular shape - Leaning towers - Hanging hammer - Mystery batons - Rotating weights - Bicycle wheel - The stranded demonstrator - Rotating chair and throwing weights around - Spinning skater - Rotating chair and bicycle wheel - Rotating chair and double bicycle wheel - Hanging bicycle wheel 09 Solids, Liquids and Gases - Archimedes' principle: wet - Hydrometer - Archimedes' principle: dry - Barometer - Magdeburg hemispheres - Hydraulic press - Venturi tube - Bernoulli plate - Bernoulli cart - Rising ball - Moving cans - Spinning cup 10 Temperature - Types of thermometers - Linear thermal expansion and contraction - Bimetallic strip - Ball and ring - Liquid nitrogen and air balloon 11 Heat and Thermal Energy - Specific heat - Dropping nails - Thermal convection in air - Thermal convection in liquids - Absorption of radiation - Transmission of infrared radiation 12 Thermodynamics - Energy bike: heat equivalent of work - Cold cannon - Pressure as a function of temperature - Pressure as a function of volume - Fire syringe - Stirling engine - Maxwell's demon 13 Vibrations and Waves - Hooke's law - Mass and spring - Simple harmonic motion on the air track - Circular motion projection (ohp) - Ceiling pendulum - Weighted hose - Slinky 14 Waves, Sound - Transversal wave machine - Longitudinal wave machine - Bead board model of superposition - Sine wave through a slot - Bell in vacuum - Decibels - Frequency and the limits of audibility 15 Sound - Doppler effect - Wave open at one end - Speed of sound - Stroke rod - Tacoma bridge (video) - Beat box - Human ear model ------------------------------------------------------------------------