English Mechanic and Mirror of Science and Art, Том 37

Accrington acid action advertise amateur angle answer apparatus armature battery Bicycle bismuth blowpipe boiler brake brass carbon carriage paid cell centre chucks coil colour copper correspondent crank cylinder diameter disc dynamo electric electromotive force engine ENGLISH MECHANIC experience eyepiece galvanometer germinal vesicle give glass glycerine heat hole inch iron kindly lathe Leclanché cells length lens lenses letter lever light London machine magnets mandrel means metal motion motor object obtained ordinary paper patent pedal photosphere piece pipe plate polish position practical pressure pump quantity querist query question readers reply rider screw shellac slide spherical aberration spring star steam steel stroke surface telescope thread tion tool tricycle tube vacuum brake valve variable stars varnish vertical W. A. Lee watch weight wheel wire zinc