Gigantic Expanding Spheres! (p.9) - Prof Bunsen

SOUND & WAVES
Singing Rods Set
This amazingly simple demonstration will bring to life complex
concepts such as resonance and natural frequency of vibration!
Hold the rod in the middle with one hand, apply rosin to the thumb
and forefinger and slide your fingers repeatedly along the rod to
make the rod resonate at a high pitch. Excellent for discussing
nodes, anti-nodes, wavelength and frequency.
Included: Two aluminium rods of different lengths, a bag
of rosin, Prof Bunsen’s classroom notes.
Age: 12+
S01 Set: Two rods & rosin A$ 42.00
S02 Extra bag of rosin A$ 11.00
Sound Tube
A captivating simple demonstration.
Twirling the tube at different speeds
produces up to five different resonant
tones. It teaches Bernouilli’s principle
too.
Colours may vary.
Age: 6+
S04 A$ 4.00 each
Slinky Spring - Wave Modeler
This is the original Slinky Spring for endless walking, juggling,
flipping and action motion fun. Invented 68 years ago by
Richard James, a US naval engineer, the slinky idea
came about when a tension spring fell off his desk and
started “walking”.
Great for modeling standing and longitudinal (sound) waves.
Size: 55 mm diam, 50 mm high
Age: 5+
S05 A$ 9.00
The Original
Slinky!
Light Modulation:
Photo Phone Kit
How much fun can one have with a complex principle such as
amplitude modulation? A lot! Plug a torch into a CD player’s or iPod’s
earphone socket and transmit the sound on the light beam to a solar
panel. The solar panel is connected to an amplified speaker that will
make the signal audible.
Included: Pre-amp kit, solar panel, components, instructions
Required (not included): Torch (A), MP3 player (B), amplified speaker
(C), soldering iron, 9V battery.
Age: 12+
E01 A$ 32.00
VIDEO
ONLINE
12 order online: www.profbunsen.com.au