This demonstration list is only a guide to selected possible demonstrations in a given lecture. The additional materials are a work in progress. Suggestions/comments are appreciated. Contact: Prof. Mark Croft firstname.lastname@example.org In outside display case: Jacob's ladder>; magnetic can-spinner; diffraction grating with white and atomic sources>; soap bubble shapes; interference in soap film Matter and Motion: Things that move (along a line) Inertia: Object at rest stays at rest. -Table cloth and dishes To see a discussion of this demo click here. To see demo click here. More dishes 2007 click here. Inertia: Object in motion stays in motion. Pencile gun. Hover craft toy - straight line constant velocity motion when no force. F=ma -Mass and acceleration-hammer/sponge/lead brick/hand/lead To see demo click here. Force pus/pull- changes motion roller skates Force/reaction force : -Baloon & air interaction Video of the balloon-air force reaction force demo. 2007 Video of the balloon-air force reaction force demo & explanation. -Hornblower movie cannon recoil in movie .wmv video -Human Rocket -CO2 Fire Extinguisher (compare to balloon) [conservation of momentum] To see web page of this demo click here. To see video of this demo click here. Another video of this demo. 2007 show video of this demo. -Note Cooling effect of Co2 liquid-gas transition -Rotation about Center of Mass CO2 Fire Extinguisher To see web page of this demo click here. To see video of this demo click here. Torque-rotation .wmv video force direction (torque)/rotation .wmv video -Note Cooling effect of Co2 liquid-gas transition 1D Constant Acceleration Motion const. acc. demo bowlingball-incline demo Projectile Motion (not typically in lecture) -"Shoot the Monkey" demo To analysis of this demo click here. For a deeper understanding of this demo and accelerating reference frames click here. Energy -potential/kinetic/ -Pendulum To see this demo click here. Pendulum Simulation. Pendulum & energy conservation. -Bouncing balls - happy/sad balls Things that rotate/turning forces: -Bike Wheel - -axis of rotation - right hand rule for direction of rotation To see video of this demo click here. -force through and perpendicular to axis (torque) To see video of this demo click here. -Rotating chair- Bike Wheel - conservation of angular momentum - rotation torque reaction torque -Rotating chair weights -steel pole - distance of mass from axis important To see this demo click here rm low res video. Distance of mass from axis, importance for rotation- .wmv video. Distance of mass from axis, importance for rotation- 207-video. Ice skater rotation example. -Centripetal/Centrifugal Force -wine glass swung in circle To see this demo click here. To a .mpeg video of this demo click here. To a .wmv video of this demo click here. wine glass swung in circle 2007. Fluid motion: Bernoulli effect To see a discussion of the Bernoulli effect click here. To see a video of the Bernoulli effect click here. -Bernoulli ball - air plane wing To see this demo click here. -Raleigh Tube To see this demo click here. -Curve Ball Vibrations, Waves and Sound: -Vibrations - spring & weight (potential vs kinetic energy) Spring & Harmonic Motion Simulation -free vibrations Harmonic & CircularMotion Simulation -wine glass -driven vibrations-and resonance Resonance Theory Simulation -Traveling waves (slinky)- transverse and longitudinal waves -Kobe earthquake video Take cover on first jolt! Oscilliscope - picture of sound vibration misc. surface shock waves in nature - Comment on traveling vibration in the air - sound waves high frequency - high pitch low frequencu - low pitch -Tuning Fork/Strobe - Standing waves Standing waves on rope Standing Wave Superposition with the Reflected Wave Flame tube. -Singing rod/Rosin- overhead - emphasize nodes where expected To see/hear this demo and see a discussion slide - click here. Singing rod .mpg video. -Tacoma Narrows Bridge Collapse Wind driven resonance - bridge collapse. -Shattering beaker with sound To see this demo click here(RealVideo). -Propagating smoke ring demo To see Dave's smoke ring cannon video click here. Fluids - Gases - Pressure - Density - Temperature: Density - mass/volume Fluids: To see a discussion of buoyancy click here. -Buoyancy -Beans & bowl (buoyancy) To see this demo click here. -Diet vs. Sugar coke add salt - sugar coke now less dense than more dense salt water - Bowling Balls in water To see a .mpeg video of this demo click here. To see .jpeg picture of this demo click here. - Hydrogen & He Balloons - explode H2 balloon To see this demo click here. Pressure: - Vacumn pump-balloon/marshmallows To see this demo click here. - Bed of nails Pressure = force / area. To see this demo click here. -Crush Coke Can -Crush 55 gal. drum To see these demos click here. Temperature: - Model of molecules moving randomly in a gas. To see a .mpeg video of this model click here. Simulation of atomic motion in a gas. Another simulation of atomic motion in a gas. -Liquid Nitrogen - -Shrink helium balloon - density connection To see this demo click here. To see a discussion of buoyancy click here. Simulation of atomic motion and balloon buoyancy. -LN2 cannon - To view a video of this demo click here. -Freeze: flower orange grape banana Plastic hand Hot dog baloney To see this demo click here. Light: -Spectrum with Prism (overhead projector) Geometrical Optics -Diffraction grating sheets -Continuous Source (incandescent)- vary temperature - light color connection to temperature Simulation of Blackbody_Spectrum-connection to temperature. -Atomic light sources (energy/lighr emission quantized) To see this demo click here. Simulation of quantum interaction of light with atom. -UV light & glow in the dark rocks/toys (high energy radiation) fluorescent minerals fluorescent minerals#1 fluorescent minerals#2 fluorescent minerals#3 video of time decay of mineral fluorescence -IR light focus to light matches Electricity and Magnetism: Electric charges and forces: -Van de Graff Generator- Pie plates - ping pong balls///plates- hair [illustrate electric charges can both attract & repel] florescent light - elecric energy converted to light To see this demo click here. Flowing current - -Capacitor discharge To view this demo click here. -Burn resistor - cook hot dog Magnetism - magnetic force on moving charges: -Magnets- magnetic field lines-iron filings-load stone -Force on charge moving through magnetic field - oscilloscope To see this demo click here. Circular orbit of e in B field -Faraday motor [tube on incline with current and magnets] To view this demo's schematic click here. To view a video of this demo click here. Changing magnetic field - makes charges move in circle: -Coils/meters/magnet: Faraday's Law Faraday's Law Simulation Falling Magnet Animation Eddy Currents: -Inclined plane/magnet and disks. Changing magnetic field creat elitrical currents and motional to electrical energy change occurs. For more schematics on this demo click here. To view demo .rm video (solid disk in magnet) click here. To view demo .rm video (slotted disk in magnet) click here. To view demo .rm video (zig-zag cut disk in magnet) click here. -Magnet in tube -Magnet on inclined plane. Magnetic drag on magnet rolling on inclined plane. Moving charge creates magnetic field: Electromagnet Combinations of induced current and force on moving charge: Ring flinger To see this demo click here. Can crusher To view demo video click here. To view the magnetically crushed can click here. Liquid N2 at end Additional Material On Bohr, U and Th On the WWII Pu-implosion bomb To see a short essay click on the link On Aristotle, Newton and a 500 Pound Gorilla (Friction). To see a short essay click on the link On the Bernoulli effect and the New Brunswick to New York train ride. To see a short essay click on the link Galileo Galilei's Anagram.