US$ 14.95
six convex/concave lenses spanning 10-50cm focal lengths
letting students route current down either branch of a circuit by choosing which slot the plug occupies
and vascular cylinder for plant anatomy and absorption teaching
spindle formation
verifying conservation of momentum in two dimensions for mechanics-unit investigations
Cross Wires for Optics Experiments Lab Supplies_Filtering Supplies six convex/concave lenses spanning 10-50cmCross wires set inside a 10mm aperture on a 75mm circular black metal screen, providing a fixed sighting reference for telescope and spectrometer alignment on the optical bench.
US$ 14.95
US$ 609.50
US$ 60.00
US$ 749.50
US$ 335.00