The New Book of KnowledgeGrolier, 1986 - 21 sider An illustrated encyclopedia containing over 9,000 articles on history, literature, art and music, geography, myths and legends, mathematics, science, hobbies, holidays and festivals, games, sports, crafts, medicine, law, government, industry, politics, and other topics. |
Inni boken
Resultat 1-3 av 21
Side 32
... coil-and-magnet device, called a galvanometer. When current from the first coil flows through the galvanometer, the second coil moves a little. So does a tiny mirror attached to the coil. The mirror reflects a light beam onto a sheet of ...
... coil-and-magnet device, called a galvanometer. When current from the first coil flows through the galvanometer, the second coil moves a little. So does a tiny mirror attached to the coil. The mirror reflects a light beam onto a sheet of ...
Side 131
... coil, the lines of force become much stronger. The discovery of the magnetic effects of coils made it possible to measure electrical currents. The first simple instrument for this purpose was called a tangent galvanometer. It consisted ...
... coil, the lines of force become much stronger. The discovery of the magnetic effects of coils made it possible to measure electrical currents. The first simple instrument for this purpose was called a tangent galvanometer. It consisted ...
Side 132
... coil of wire. The coil was connected to a galvanometer, an instrument for measuring Below, left: Michael Faraday, discoverer of magnetic induction. Right: Moving a magnet in a coil of wire produces an electric current in the coil ...
... coil of wire. The coil was connected to a galvanometer, an instrument for measuring Below, left: Michael Faraday, discoverer of magnetic induction. Right: Moving a magnet in a coil of wire produces an electric current in the coil ...
Andre utgaver - Vis alle
Vanlige uttrykk og setninger
American ancient animals atoms became become began beginning building built called carry cause century changes charge chemical church cities common developed direction early earth East eggs electric electrons elements energy engine England English Europe European example experiment explosives fish flow follow force France give grow heat houses important Indian industry iron Islands Italy John keep kind king known land language later learned light lines live magnet materials means metal motor mountains move natural needed North ocean organisms period plants plate plays produce River rock Roman rule schools scientists sometimes surface tests things tion turn United usually waves wire writing wrote