High School (ages 14+)

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. 

Liquid Nitrogen Ice Cream

Explore the properties of liquid nitrogen while making a tasty treat. This demo is great for chapter socials and smaller outreach events.

Tuning Fork Workshop

Tuning forks are one of the few instruments that resonate with one distinct frequency. Create a workshop with tuning forks with this variety of quick, fun demos ranging from visualizing sound with lasers, to watching energy transfer through pendulums.

Simple Motor

Construct a simple motor out of everyday materials in this workshop. Particpants learn first hand how to leverage the science of electricity and magnetism to create useful tools that we use every day.

Eddy Currents

By dropping a magnet through a copper tube, participants learn how the magnetics fields can still interact with nonmagnetic materials. 

Homopolar Motor

Participants learn the everyday science of electric motors in this fun and engaging workshop activity. 

Fabric of the Universe Part 2

After completing Part 1, explore solar system formation, tides, and planetary rings using a spandex sheet.

Impulse on Eggs

Participants learn about impulse by building vehicles to drop eggs in. 

Off-Grid Phone Charger

Constructing this simple and inexpensive portable cellphone charger provides an introduction to soldering and electronics.

Practically, these units can be used for charging in regions of the world where grid electricity is not readily available.

Variable Index of Refraction

A sugar-water solution is used to create a liquid with a variable index of refraction. Participants learn about solutions, gradients, and refraction.

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