Description
Eight 15 x 10 x 10cm pinhole boxes
these concavity microscope slides hold liquid samples for hanging-drop preparations and observation of specimens in suspension
showing the hexagonal bonding within each layer and the weak bonding between layers
supporting up to three pendulums simultaneously for harmonic-motion work
including sp3
Single Contact Morse Code Key Base_Octagonal Eight 15 x 10 xPlated 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.
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