Acrylic demonstration lenses include one each of double convex, double concave, plano-convex, Plano concave, concavo-convex, and convexo-concave. The focal length of each lens is 50 mm. The set includes a storage case.
Made of polished acrylic 15 mm thick, the set is provided in a convenient storage box. Set consists of: rectangle (75 mm sides), double convex lens and two double concave lenses with a focal length of about 10 cm, equilateral prism, and semi-circular block.
This versatile, comprehensive Ray Box Kit allows teachers to demonstrate all geometric optics principles to the whole class. The Ray Box and all-optical accessories can be firmly held to a metal chalkboard or whiteboard. The kit comes with a robust plastic box with a 12V halogen lamp, a cylindrical lens, a set of 5 slit diaphragms, a set of 7…
Cylindrical lenses made of highly polished glass magnifies in only one dimension. These lenses are used in transforming a point image into a line or changing the height of an image without changing its width.
A set of 6 glass spherical mirrors with back surface slivering. Three convex and three concave mirrors, all of 50mm diameter. Focal lengths are: 60mm, 100mm, 200mm, -60mm, -100mm and –200mm. Ages 13+
A Robust light box in matt black finish with a 12 V 24 W axial filament lamp with flexible leads. One end of the box takes a cylindrical convex lens in an adjustable sliding mount to enable production of convergent, parallel or divergent beams. Complete with accessories which consist of: 5 Plastic blocks, one rectangular, One semicircular, One equilateral prism…
Compact loupe magnifiers. Markings in both inches and centimeters for easy measuring. Fold flat for storing when not in use. Sturdy plastic frame. 1.25" x 7.8" when folded flat.
Pocket type magnifier mounted in single body with a metal cover which doubles as a handle fitted with a single lens of diameter 18 mm with a magnification of x 10.