# Cycloid Ramp

• The amount of time required for a rolling ball to reach the bottom of a cycloid ramp is, surprisingly, height independent. Test this out by releasing two balls, simultaneously, from two different heights along the ramp (bottom picture). Balls always collide at the lowest point where the two ramps meet. Place the metal tube on the ramp, at lowest point, to allow students to hear the simultaneous clang made when balls reach bottom.
• The  Brachistochrone problem can be discussed by showing that a ball travels more slowly down an un-curved ramp than it does down a cycloidal one.
• Numbers along curve indicate height from bottom.
• Located in L02, section B2.

# Energy (Outreach set)

Demo set includes

• Fire Syringe
• Collision Balls

Each demo illustrates some aspect of energy conversion.

# Dropper Popper

• The “Dropper Popper” bounces about 2 meters high, no matter what height it is released from.
• The rubber half-sphere (as seen on left, in above image), can be turned inside out (as seen on right). Stored energy is instantly released when popper turns right-side-out; and, if resting on a flat surface, will launch about 2 meters high. To trigger this, popper must be dropped, flat, onto a hard surface.
• Hold and release popper as shown in top image, away from body.
• If having difficulty dropping it perfectly flat, spin it like a frisbee while releasing.
• Located in L02, section B4.

# Electrical Circuits (outreach set)

Demos in this set include:

• Penguin track
• Human battery (copper and aluminum plates connected to voltmeter)
• Energy Stick and Energy Ball
• Mounted light bulbs
• Hand-held generator
• Battery pack (with 2 D-cells)
• D-cell Battery

# Light Bulb Energy Usage

• When bulbs consume the same amount of power (same wattage) their brightness differs substantially- the incandescent bulb is much dimmer than both the compact fluorescent and the LED, which are of comparable brightness.
• Bulb power can be adjusted using sliders. Meter connected to bulb tells both watts and volts.
• Located in L01, section B5

# Astro-Blaster

• Purpose: Illustrate principles of conservation of momentum
and energy, specifically during the creation of a supernova.
• Hold tip of AstroBlaster as shown; release when hanging straight
down. Blasted capsule can reach heights of over 5 times the drop height.
• May consider wearing protective goggles for this one.
• Location: L02, section B5

• Purpose: Demonstrate properties of gravitational potential
energy.
• Balls start moving and end with identical velocities, but ball on longer track traverses path more quickly.
• Prove that balls end with identical velocities by showing they fall the same distance from the end of the track. Use carbon paper to show location of impact.
• Located in L02, section B2

# Solar Energy Outflow

• Random motion of “Bumble Ball” can be used to demonstrate
principles of radiative diffusion. See article included with demo for details
and activity ideas.
• Located in L01, section C2.

# Change-of-state Energy

• Study the heat produced during a change-of-state. Stored
energy is released during induced rapid crystallization.
• See included handout for lab and demo ideas.
• Located in L02, section C3.

# Energy Ball

Touching both electrodes at the same time completes the circuit and causes the ball to light up. If one person touches one electrode and another person touches the other the ball will not light up; but if the two people then touch each other the ball will light up. A circuit chain consisting of multiple students can be created.

• Located in L01, section B-4.

# Energy in Capacitor

• Purpose: Compare the energy stored in a capacitor to the
potential energy of an object raised vertically by the electrical discharge
of the capacitor; measure the efficiency of a motor.
• Located in L01, section B1.

# Standing Waves

• Apparatus located in L02, section C2; ring stand located
in L35, section A4.

# Boil Water with Vacuum

• Evacuate chamber with vacuum pump and water boils.
• Explanation: Room temperature water contains enough energy to boil but won’t because atmospheric pressure pushes in on the liquid from all sides, preventing vapor bubbles from forming.Remove pressure and water will boil.
• Demo located in L02, section C-3.

# Coaster Track

• Purpose: Nice for illustrating gravitational potential energy
problems.
• Use ring stands and duct tape to set up.
• Two different coaster tracks are on the shelf. One of them
is more flexible and easier to use.
• Located in L02, section B2