Cagniard de La Tour siren Calefation apparatus. Leidenfrost's drops Camera Camera lucida Camera lucida for use with microscopes Camera obscura Capillary tubes Carbon microphone Cartesian diver (or devil) Cast-iron freezing bomb Cathetometer Cavendish hemispheres Centrifugal track Centrifugal ventilating fan Centrifuge Cinematograph Circular Vernier Communicating vessels Compensated pendulum Composition of forces Compound microscope Compression fountain

Concave mirror Condenser with mobil plates Condensing electroscope Concave parabolic mirrors Conductivity box according of Ingenouhsz's principle Cone Conical prism Convex spherical mirror Cooker Coulomb's torsion balance Crookes' double-vane radiometer Crookes radiometer Crookes' tube with three anodes Cryophorus Cryptoscope Crystal-refractometer Cubical mirror Cubical rotating mirror Cylinder moving uphill Cylinder with perforated arrow Cylindrical mirror Cylindrical tube