… of clocks and watches combined with some other object (an article of furniture, a lamp, inkstand, paperweight, writing‑pad, tobacco jar, cigarette or cigar lighter, handbag, powder …
… equipment , which deposit various types of films which are obtained by combining the appropriate gases in a reactant … equipment , which deposit various types of films which are obtained by vaporizing a solid. For example : (1) …
… separate microscopic examination of the test‑piece (e.g., observation of ball‑test marks on metal). In addition, … the oscillations of a pendulum resting on the specimen are observed. The pendulum consists of an inverted U‑shaped cast …
… Oscilloscopes and oscillographs are used respectively for observing or recording rapid variations of an electrical … electro‑magnet. The periodic phenomenon under study can be observed directly on a sheet of frosted glass, or recorded …
