Page 29 - Demo

Your Safer Source for Science
WAVES, continued
Standing Wave Generator
Finally—an inexpensive, yet reliable stand- ing wave generator! The principles of wavelength, amplitude, nodes and anti- nodes will become concrete to students using this durable wave generator. Highly visible apparatus measures four feet in height—allowing for the study of the first, second, third and even the fourth harmonic! Bracken’s Demonstration Spinner (Catalog No. AP6202) is required and sold separately.
AP6161 I $28.55
Super Spring and Stand
Super-size your wave demonstrations with this extra long spring that can stretch across a classroom or a gymnasium. Effectively shows transverse and longitudinal traveling waves as well as standing wave patterns. Convenient storage stand will guarantee that the spring remains tangle-free year after year. Instructions provided. 3" diameter x 8" long (when compressed).
AP6565 I $46.50
Buzzer in a Vacuum Kit
Demonstrate how sound waves travel in
a vacuume. The buzzer operates on a DC power source. Turn the power on, and it buzzes loudly. Connect a vacuum pump to the jar assembly and turn on the pump. As air is pumped out of the jar, the sound of the buzzer becomes fainter. Slowly allow air to re-enter the jar, and the sound of
the buzzer becomes stronger. Requires 1⁄4" tubing. Vacuum pump available separately.
AP4532 I $77.10
Slinky®
The original Slinky®—it stretches, snaps back and will actually walk down stairs. Great for wave demonstrations.
AP1957 I $9.55
WAVES I FLINN SCIENTIFIC 27
Bracken’s Demonstration Spinner
Introduce your students to the fast, fun and entertaining world of centrifuge demon- strations! Perform a wide array of physical science and chemistry demonstrations, such as the Standing Wave Generator, Newton’s Color Wheels, Butterfly Orbital and Centrifugal Hoop using the Bracken’s Demonstration Spinner’s powerful motor. Easy-to-use, low-cost device provides many hours of service. Operates on one D battery (included).
AP6202 I $29.55
Wave Demonstrator
Make waves with this 1.8-meter helical spring. Demonstrate standing, transverse and longitudinal wave properties.
AP9023 I $28.35
PHYSICAL SCIENCE