Middle School (ages 11-13) & General Public

Passive Pasta

Learn about "passive" cooking through this energy efficient workshop! Participants will make pasta noodles by using hot water and an insulated travel mug, and eat a delicious meal. Water molecules, energy, heat, isolated systems - these are only a few physical concepts introduced in this engaging demonstration!

Cakeraters

Falling space rocks collide with the surface of planets and moons to create impact craters which can be found all over our solar system

Gravitational Waves in Jello

Movement of massive objects in space create gravitational waves that travel outward in spacetime and bend light along the way. We detect these waves by using lasers and watching changes in how light moves through space. This demo uses clear jello and a laser to show how collisions create ripples that radiate outward from the source, which are able to bend light.

Rijke Tube

Explore resonance, waves, and acoustics with this simple rijke (reekee) tube.

Rubens' Tube

Make a flaming tube to explore the physics of waves and acoustics.

The Rubens' Tube should be used with caution and vigilance, especially if used indoors. 

 

Chladni Plates - Violin Bow

Recreate E.F.F. Chladni's classic demo of sprinkling sand on a plate and playing it with a violin bow to create and visualize various vibrational patterns. This versatile demo can be adapted to talk about sound wave acoustics, vibrational normal modes, and energy transport to a wide range of audiences. 

Chladni Plates - Speaker

Build a simple Chladni plate using a 6" x 6" metal sheet, a 2 watt speaker, powered with a 20 gain amplifier and phone. Sprinkle sand on the sheet, and play various sound frequencies to reveal the sheet's assortment of resonant vibrational modes. 

Along with the plate demo itself, an amplifier can be made fairly easily with an LM386 op amp. Download instructions for making the amplifier under associated files or can be found here. 

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