PE-0700 Abbe Refractometer

Ernst Abbe was not the first and not the only scientist who developed a convenient refractometer, but his refractometer is – in several varied and updated versions [...]

Rectangle Aluminum Mirrors

Cylindrical Plano-concave Lenses (Synthetic fused silica 10×10mm – 30×50mm)

CLSQ-N Cylindrical plano-concave lens has a concave curvature in the vertical direction and has no curvature in the horizontal direction. When used in combination [...]

PE-0600 Optical Interferometer

In 1881 Albert Michelson used an interferometer to successfully disprove the theory of a universal ether that existed till then. Later on, he determined the length [...]