Examples of printing (a) with ammonia nitrate of silver (b) with bichromate of potash (c) with blue ammonia nitrate of iron (d) with nitrate of uranium. Four examples of printing processes
Examples illustrating the production steps of commercial stereomodels produced by W Büchi AG, Switzerland, to give units representing methane in a ratio of 2.5cm/0.1nm. The stages are: rods and tubes, pieces and assembly, tetralignant carbon and van der Waals radius. Examples illustrating the production steps of commercial stereomodels produced by W Büchi AG