Location: NC1001; Orange Shelf 3, Bin 6
Set of Boomwhackers, includes a full octive set of notes with "Octavator" end caps which lower the tubes down one (1) octive.
Boomwhacker Sheet Music from Arbor Scientific.
Supplier: Arbor Scientific
Location: NC1001; Orange Shelf 3, Bin 5
From Arbor Scientific:
Dramatically demonstrates nodes, anti-nodes, and standing waves!
Our "Singing" Rods make a great addition to your lessons on sound and waves. Just like the Singing Sword of legend, these magical rods will "sing" for you...if you know the secret. Simply hold a rod between your thumb and forefinger at one of the three marked nodes. Place a little of the included special rosin on your other hand. Then rub that hand along the rod from middle to end. A must for explorations of sound and waves, these rods are an easy way to demonstrate longitudinal waves as opposed to transverse waves. They're ideal for teaching about nodes and anti-nodes in standing waves. And they're a great follow-up activity to see if students really understand sound and waves. You get two rods (75cm and 50cm), so you can demonstrate the relationship of pitch to length.
Additional Information
As you stroke, friction creates a standing wave pattern which emits a tone that grows louder with each stroke. The resulting high-pitched ringing is sure to wake up everyone in class. The rod is marked at the quarter and halfway points. Holding it at the halfway point makes that spot a nodal point and creates the first harmonic. Moving your hand to a quarter point forces the second harmonic - and a higher pitch! (These and other experiments are discussed in the included explanation/activity sheet.) A sample activity from the datasheet is given below. Next, while the rod is "singing" in wave pattern B, grasp it at the mark near the opposite end. Since the mark represents the other node in that wave pattern, grasping it there will not stop the vibration. Touching the rod anywhere else will stop the sound.Science Standards
In using this product, national and states' science education standards are covered. Some examples are provided here. These are representative, however. Check with your state to find the exact standards.
- Waves, including sound and seismic waves, waves on water, and light waves, have energy and can transfer energy when they interact with matter.
- Describe the motion of pendulums and vibrating objects.
- Describe the behavior of waves when they interact.
- Explain how energy is stored and transformed in vibrating and oscillating objects.
Supplier: Arbor Scientific
Location: NC1001; Orange Shelf 3, Bin 4
From Arbor Scientific:
This striking sound wave interference demo is affordable!
Each speaker emits the same single frequency. Place the speakers at least 1m apart and observe the sound halfway between. As you'd expect, constructive interference produces a sound louder than each individual speaker. But move to one side, into a region of destructive interference, and the sound becomes quieter than one speaker alone!
Qualitative and Quantitative Experiment Options
Ask students to predict what will happen if the frequency is increased. Will the interference points get farther apart, or closer together? Movearound, map the interference points around the room, and determine the wavelength. Comparable systems retail for over $250! Includes tone generator, pair of speakers, all necessary cables and a data sheet. Generator Frequency range: 20Hz ~ 20KHz ±1dB
Includes: Signal Generator, Powered Speakers, and data sheet.
Supplier: Arbor Scientific
Link: http://www.arborsci.com/sound-wave-interference-kit.html
Location: NC1001; Orange Shelf 3, Bin 2
Includes two tuning fork setups at 256 Hz (C) with rubber mallet and in a wooden resonance box. One is fixed, the other adjustable.
Supplier: Arbor Scientific
Link: https://www.arborsci.com/sympathetic-resonator-tuning-fork-set/
Location: NC1001; Orange Shelf 3, Bin 7
From Moog via Amazon:
- Pitch correction w/ selectable scales and root note
- Built in tuner allows you to learn pitch and scales
- 32 Wavetable based presets
- Built in speaker (2-inch, full-range)
- Headphone output (1/8” (3.5mm) TRS headphone jack) & Two 1/4" audio outputs
- Removable pitch antenna - built in storage compartment on bottom-side
- Built in 3/8” Mic stand and Camera stand adaptor
Supplier: Moog (via Amazon)
Manual: https://api.moogmusic.com/sites/default/files/2018-09/Theremini_Manual_6_25.pdf
Physics of the Theremin: https://aapt.scitation.org/doi/10.1119/1.19004
Link: http://www.amazon.com/gp/product/B00HVO7FXI/ref=ox_sc_act_title_1
Location: NC1001; Orange Shelf 3, Bin 3
From Arbor Scientific:
This complete range of our precision-tooled aluminum forks won't rust or tarnish, so they'll last for years. Set includes 256Hz Note C, 288Hz Note D, 320Hz Note E, 341.3Hz Note F, 384Hz Note G, 426.7Hz Note A, 480Hz Note B and 512Hz Note C tuning forks plus it comes with a rubber hammer and a soft protective case for easy storage.
All of our forks are tuned to a tolerance of +/- .5% tuning.
Supplier: Arbor Scientific
Link: https://www.arborsci.com/complete-set-of-tuning-forks/