11. Electroscope Inc ., Boulder, Colo ., an initial public offering of 1.2 million shares.12. The best way to find an answer to your question is to do some experiments with a real electroscope . 13. The rod is indeed part of one of the two plates on a gold leaf electroscope 's capacitor. 14. This type of electroscope usually acts as an indicator and not a measuring device, although it can be calibrated. 15. This method can be demonstrated using a gold-leaf electroscope , which is an instrument for detecting electric charge. 16. This effect was first discovered by Alessandro Volta, and can be measured using a capacitance electroscope comprising different metals. 17. The electroscope is first discharged, and a charged object is then brought close to the instrument's top terminal. 18. A simpler but related instrument, the electroscope , works on similar principles but only indicates the relative magnitudes of voltages or charges. 19. In 1748, Nollet invented one of the first electrometers, the electroscope , which showed electric charge using electrostatic attraction and repulsion. 20. Moving a charged object toward the electroscope 's rod is equivalent to adding ( or removing ) a plate from a charged capacitor.
