US$ 17.95
and tri-color - sit in 2 x 2 inch plastic mounts with 1 x 1
Built for medium-volume Snell's-law work
Universal 2-input NAND gate module with red/green LED outputs and a printed truth table
and 3 rods for multi-configuration study
distance-measurement system
Doppler Effect Demonstration Apparatus with 92dB Buzzer Electricity & Magnetism_Electrochemistry and tri-color - sit inDemonstrates the Doppler effect by swinging a 92dB buzzer on a 0. 8m tether, revealing the shift between approaching and receding frequencies in introductory wave and sound units.
US$ 17.95
US$ 1999.50
US$ 10999.50
US$ 17.95
US$ 13299.50
US$ 21499.50
US$ 1022.50
Sold : Login>>