US$ 32.73
supporting up to three pendulums simultaneously for harmonic-motion work
Pack of 12 metal lattice support clamps fitting rods up to 12
Eight 15 x 10 x 10cm pinhole boxes
showing the hexagonal bonding within each layer and the weak bonding between layers
measuring period under different loads to isolate mass from weight
Single Contact Morse Code Key Base_Octagonal supporting up to three pendulumsPlated spring arm with press knob and a single contact stud, configured to make and break a circuit at the rhythm of a Morse code transmission for telegraph history demonstrations.
US$ 32.73
US$ 32.73
US$ 140.57
US$ 135.00
US$ 157.50
US$ 135.00
US$ 32.73
US$ 68.01