Page 22 - Demo

WAVES & SOUNDSonic Flame Tube— Demonstration KitA Sonic Flame Tube, or Ruben’s tube, lets students visualize waves and resonance. Natural gas flows through a 3’ aluminum tube with evenly spaced holes and is ignited. A speaker on one end sends a frequency of sound wave through the tube, creating resonance. The flames above the holes move with the frequency in a wave of nodes and antinodes. Includes materials for a permanent flame tube, complete instructions, safety information and tips. AP7363 I $73.30Super Spring and StandSuper-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 stor-age stand will guarantee that the spring remains tangle-free year after year. Instructions provided. 3” diameter x 8” long (when compressed). AP6565 I $46.00Waves and Sound—Student Laboratory KitExplore wave and sound properties at hands-on activity stations. Study longitu-dinal and transverse waves with springs, observe how wavelength and frequency are related, investigate wave intereference and patterns, determine the speed of sound in air, experiment to examine variables affecting resonance frequency and understand the Doppler effect. Instructions, Teacher Notes and necessary materials are provided. AP7014 I $129.95Resonance Tube ApparatusThe glass resonance tube in this apparatus is calibrated directly on the glass, providing more consistent data and accurate readings than mounted meter sticks. The tube is mounted on a support stand and connected with surgical tubing to an aluminum water reservoir, which is easily moved up and down with the knurled adjustment screw built into the support clamp. Includes tuning fork with 512 Hz frequency. Complete with experiment directions. AP5703 I $154.55Standing Wave GeneratorInexpensive yet reliable and durable stand-ing wave generator makes the principles of wavelength, amplitude, nodes and antinodes concrete for students. The highly visible appa-ratus measures four feet in height and allows for the study of the first, second, third and even fourth harmonic! Includes the standing wave generator apparatus, an instruction guide with a detailed procedure section and an extensive background section. AP6161 I $27.20