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2. Galvanometer - Wikipedia

   en.wikipedia.org/wiki/Galvanometer

   An early D'Arsonval galvanometer showing magnet and rotating coil. A galvanometer is an electromechanical measuring instrument for electric current.Early galvanometers were uncalibrated, but improved versions, called ammeters, were calibrated and could measure the flow of current more precisely.

3. Category:Galvanometers - Wikipedia

   en.wikipedia.org/wiki/Category:Galvanometers

   Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file

4. Chart recorder - Wikipedia

   en.wikipedia.org/wiki/Chart_recorder

   Many types of chart recorders use a galvanometer to drive the marking device. A light coil of wire suspended in the magnetic field of a permanent magnet deflects in proportion to the current through it; instead of the pointer and scale of a direct-reading meter, the recorder deflects a pen or other marking device.

5. Mirror galvanometer - Wikipedia

   en.wikipedia.org/wiki/Mirror_galvanometer

   Late 19th or early 20th century. This galvanometer was used at the transatlantic cable station, Halifax, NS, Canada Modern mirror galvanometer from Scanlab. A mirror galvanometer is an ammeter that indicates it has sensed an electric current by deflecting a light beam with a mirror. The beam of light projected on a scale acts as a long massless ...

6. Ballistic galvanometer - Wikipedia

   en.wikipedia.org/wiki/Ballistic_galvanometer

   A ballistic galvanometer is a type of sensitive galvanometer; commonly a mirror galvanometer. Unlike a current-measuring galvanometer, the moving part has a large moment of inertia, thus giving it a long oscillation period. It is really an integrator measuring the quantity of charge discharged through it. It can be either of the moving coil or ...

7. Vibration galvanometer - Wikipedia

   en.wikipedia.org/wiki/Vibration_galvanometer

   A vibration galvanometer is a type of mirror galvanometer, usually with a coil suspended in the gap of a magnet or with a permanent magnet suspended in the field of an electromagnet. The natural oscillation frequency of the moving parts is carefully tuned to a specific frequency; commonly 50 or 60 Hz. Higher frequencies up to 1 kHz are possible.

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9. List of PDF software - Wikipedia

   en.wikipedia.org/wiki/List_of_PDF_software

   Enterprise-level creator to create, review, edit, share or archive PDF and XPS documents. After 30 days shareware version places a watermark on documents. HelpNDoc: Proprietary: Yes: Manual and documentation authoring tool with native PDF export. Free for personal use. Mathcad: Proprietary: No: Mathcad worksheets can be saved as PDF files.