-------------------------------------------------------------------- PHESTIVAL of PHYSICS On 31-oct-99 1999 at 4 PM the PHYSICS CLUB at Lock Haven University will be holding a physics demonstration show in the Ulmer Planetarium. The show will include bangs, whistles, rockets and much much more. It promises to be fun. The show is free and open to the public. For more info contact Andy Crawford, acrawfor@falcon.lhup.edu John Reid (570-893-2078, jreid@eagle.lhup.edu) -------------------------------------------------------------------- Here is the current list of demos. ideas ----- force/pressure --------------- -bed of nails - we need to rebuild one we already have -fix up hover craft -use shop vac to blow up garbage bag and lift several people -long pvc pipe with holes -make paper support, put kid on top bernoulli --------------- balance plastic egg in blower stream sound --------------- - tube sound transmitter connect some pvc pipe in weird ways and have kids speak throug each end - maybe with the help of club members have pass the ends to differenct people - or have one end at the microphone. - rumble strips- generate different frequencies by rolling balls over strips to make different sounds - candle and parabolic mirror with sonic source (see cenco manual)?? - long tube, put watch at one end and let kids listin to other end maybe put on end next to microphone - cuts pieces of pipe to match a few notes. Roll pipe off table and play song center of mass --------------- -people balance - like the board used to hold a wine bottle -center of mass - 2x4 with 3 holes drilled that allow markers to just protrude out. One hole is in center. Use different color markers. Lay on long wide paper on floor and kick. Even if stick spins, the center mark will move in a fairly straight line.e fluid mechanics --------------- -smoke ring blower - large box with flexible end and hole on the other end that blows large smoke rings -shoot toilet paper with leaf blower?? circular motion --------------- -swing tray with water -tilt glass and observe that water surface is horizontal -put on tray and slowly rock and see that surface is not horizontal - swing in vertial plane - swing in horzontal plane (i.e, dramatic because they might think that water will fall on them inertia --------------- - stack plastic jars high on cart and pull quickly - stack........................ move with small accel then stop quickly - toilet paper rolls dropped from different heights where one is held by end and take longer to unroll - table cloth - egg drop soup - bottle, ring, pen - yank ring and pen drops in bottle projectile motion --------------- - throw object up while riding cart momentum --------------- - rocket cart angular momentum --------------- - angular momentum and watch rocking observe with laser light reaction time --------------- - reaction time and dollar bill - used ruler with times marked resonance --------------- - resonance - drill with "wobler" fixed to board, board has hacksaw blades fixed on end and extend beyond board. different drill rates will cause the blades to vibrate sequentially - Cu pipe bend to oblate cross section - has different frequencies when struck from different directions - cut tubbing of different lengths and roll of table to make different sounds torque ------------- - have kid lift adult using lever Current list of people with demos Aimee- M.O.C Kevin - Ring and Bottle Bouncing Balls Angular Momentum Campbell Soup Races Watch and Lazer (observing the ticking motion of the fly-wheel). Andy Crawford - Tablecloth Human (Wine Bottle) Stand Hovercraft. Blowing Over Paper Andy Cleaveland -Inertia and Cart Toilet Paper Toilet Paper Again Brad - Advertisement for Demo Show Steve - Paper Piling Pulley Spinning Tray with Glass of Water. Ken - Garbage Bag Man Liquid Nitrogen (ie. Banana, Racket Balls, Frozen Flower Christine - Rocket Cart Balance (center of mass, various objects). Torque Lever Buoyancy? Dr. Reid - Hacksaw Resonator Juggling Jim - bed of nails - monkey shoot - bottle rocket Anura - Imploding Can. Drew - Projectile and Moving Cart Resonating Pipes Center of Mass Projectile Unclaimed- #1)Oval Copper Pipes. #2)Balancing Egg. Program: Watch'em Fall - inertia & cart Ooops I Dropped My Pen - Left Standing - table cloth trick Marble Madness - Flying Monkey - UFO (Unidentified Flying Object) - c.o.m. Watch the Time - Reflections of My Heart - Off Balance - balancing sticks Way Off Balance - wine bottle stand Well Behaved Water - UH O (Unidentified Hovering Object) - Fly Paper Fly - paper lifted up with blower Mighty Garbage Bag - Let 'er Fly - bottle rocket Mr. Freeze - Can't Stand the Pressure - imploding can Rolling Rolls - Ribbons of Rolls - Singing Pipes - Ding Dong - Cu pipe w/oval cross section Super Kid - lever lifting adult Bed-Of-Nails - Jitter Saws - hacksaw resonator UFE (unidentified floating egg) - Earth Shuttle Launch - ================================ last years list John 1. Up UP and away 2. Depressing can (will be working with Dr. Wheeler on this one) 3. Hover Craft (will be working with Dr. Wheeler on this one) 4. rolling chain 5. colored water in tank 6. glass & ghost Larry: 1. Liquid Nitrogen Demos 2. Head Gear Jim 1. Odd Shapes 2. Monkey Gun 3. Garden Hose 4. Plus the Hover Craft and Depressing Can Steve: 1. Table Cloth 2. bouncing ball 3. bucket of water Adam: 1. Rocket Man 2. aquarium w/ hot & cold water Shawn: 1. Wrecking Ball 2. Egg Drop Soup 3. candle 4. mouse trap & cart Kevin 1. Round and round it goes. 2. gieser Brian 1. pick up chair against wall 2. break stick under newspaper 3. drop golf ball in cup on boards hinged together