Alpha E

Discussion

Streaming

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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


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


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


Electric
Motor

Repelling magnetic fields cause this motor to turn. 
Real

Real
MPG


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


Electrostatic
Balloon

A charged balloon will stick to a wall. 
Real

Real
MPG


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


Electrostatic
Yard Stick

The force between the two charges can be used to turn
the yard (or meter) stick. 
Real

Real
MPG


Exploding
Carts, equal mass

Because these carts are of equal mass, they will have
the same velocities and momentums after release. 
Real

Real
MPG


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


Alpha F

Discussion

Streaming

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Demo Page

Faraday's
Law

A changing magnetic field will induced a changing current
in the coil. 
Real

Real
MPG


Feebleminded
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


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


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


Flat
Mirror; Blackboard Optics

On a flat mirror, the angle of incidence is equal to
the angle of reflection. 
Real

Real
MPG


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


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


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


FourteenHook
Bar

Different combinations of mass and distance are required
to balance the torques on the stick. 
Real

Real
MPG


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

