US$ 12.00
Pairs a 75mm aperture with a 150mm focal length on a convex glass surface
the elongated triangular geometry handling longer ray paths for total internal reflection and beam-redirection optics
zinc) at 11
letting students quantify expansion coefficients side by side
Rock Cycle 3D Cross-Section Model, 18 x 24" Electricity & Magnetism_Electromagnetism & Motors Pairs a 75mm aperture withThree dimensional rock cycle cross section of Earth's crust on an 18 by 24 inch display, packaged with a teacher's guide linking igneous, sedimentary, and metamorphic transformations.