Videos By Alpha

Alphabetical Listing: E-F

1. E
   1. Elastic Collisions, equal mass
   2. Elastic Collisions, B/s mass
   3. Elastic Collisions, s/B mass
   4. Electric Motor
   5. Electroscope
   6. Electrostatic Balloon
   7. Electrostatic Pom Pom
   8. Electrostatic Pith Balls
   9. Electrostatic Ruler
   10. Electrostatic Yard Stick
   11. Exploding Carts, equal mass
   12. Exploding Carts, unequal mass
2. F
   1. Faraday's Law
   2. Feeble-minded Disk
   3. Fiber Optics; Cable
   4. Fiber Optics; Lucite Curl
   5. Flat Mirror; Blackboard Optics
   6. Fletner Rotator
   7. Floating Ping Pong Ball
   8. Fluorescent Bulb in Mag Field
   9. Fourteen-Hook Bar
   10. Fuse Wire

Physics Demo Videos

Alpha E	Discussion	Streaming	Download	Demo Page
Elastic Collisions, equal mass	One cart is at rest when another cart of equal mass hits it. The momentum of the moving cart is transferred to the cart at rest.	Real	Real MPG	Mechanics 1N30.30
Elastic Collisions, B/s mass	One cart is at rest when another cart of higher mass hits it. The momentum of the carts are transferred, giving the smaller massed cart a larger velocity.	Real	Real MPG	Mechanics 1N30.30
Elastic Collisions, s/B mass	One cart is at rest when another cart of lower mass hits it. The momentum of the carts are transferred, giving the larger massed cart a smaller velocity.	Real	Real MPG	Mechanics 1N30.30
Electric Motor	Repelling magnetic fields cause this motor to turn.	Real	Real MPG	E and M 5K40.40
Electroscope	As the charged rod is brought close to the knob, opposite charges are attracted by it into the knob. This leaves the post and silver leaf with the same charge. Thus, the repel each other and the leaf moves out.	Real	Real MPG	E and M 5A22.30
Electrostatic Balloon	A charged balloon will stick to a wall.	Real	Real MPG	E and M 5A10.14
Electrostatic Pom Pom	In the presence of a charged rod, a tissue pom pom will puff due to the repulsion of the ends.	Real	Real MPG
Electrostatic Pith Balls	Pith balls can be attracted to the rod or can be made to repel each other.	Real	Real MPG
Electrostatic Ruler	The force between the two charges can be used to turn the ruler.	Real	Real MPG	E and M 5A10.37
Electrostatic Yard Stick	The force between the two charges can be used to turn the yard (or meter) stick.	Real	Real MPG	E and M 5A20.10
Exploding Carts, equal mass	Because these carts are of equal mass, they will have the same velocities and momentums after release.	Real	Real MPG	Mechanics 1N20.20
Exploding Carts, unequal mass	Because these carts are NOT of equal mass, they will NOT have the same velocities after release. Instead, their velocities are inversely proportional to their mass; i.e. the bigger mass will have the smaller velocity. Their momentums will still be equal.	Real	Real MPG	Mechanics 1N20.20
Alpha F	Discussion	Streaming	Download	Demo Page
Faraday's Law	A changing magnetic field will induced a changing current in the coil.	Real	Real MPG	E and M 5K10.20
Feeble-minded Disk	The center of mass of the disk is not in the center as you might expect. Thus, placing the center of mass off center can create the torque need to roll the disk uphill.	Real	Real MPG	Mechanics 1K10.50
Fiber Optics; Cable	Fiber Optics work due to total internal reflection. A cable can even be tied in a knot and the light will still be emitted by the other end.	Real	Real MPG	Optics 6A44.40
Fiber Optics; Lucite Curl	Fiber Optics work due to total internal reflection. A curl made of Lucite will still emit light at the other end.	Real	Real MPG	Optics 6A44.40
Flat Mirror; Blackboard Optics	On a flat mirror, the angle of incidence is equal to the angle of reflection.	Real	Real MPG	Optics 6A10.10
Fletner Rotator	A moving, spinning spool will curve due to the addition or subtraction of pressure effects. The side that is spinning in the direction of the motion will have a higher pressure than the side spinning away, thus the spool will curve to the low pressure side.	Real	Real MPG	Fluid Mechanics 2C20.80
Floating Ping Pong Ball	A ping pong ball can be "floated" on a stream of air. The air rushing around the ball creates a pressure low enough to lift and support the ball. Even when the ball is not exactly over the air source! As long as the low pressure spot is under the center of mass of the ball, it will stay "afloat".	Real	Real MPG	Fluid Mechanics 2C20.30
Fluorescent Bulb in Mag Field	The high magnetic field sets up a corresponding electric field in the bulb, exciting the gas therein and lighting the bulb (light saber).	Real	Real MPG	E and M 5N20.50
Fourteen-Hook Bar	Different combinations of mass and distance are required to balance the torques on the stick.	Real	Real MPG	Mechanics 1J40.20
Fuse Wire	A piece of fuse wire is attached between two posts, completing the circuit. Light bulbs, in parallel, are added to the circuit by screwing them into their sockets. When the current load is too much for the wire, the fuse wire will burn and break, "blowing" the fuse and protecting the circuit.	Real	Real MPG	E and M 5F15.35