For the pseudoscientific equipment used in Scientology, see E-meter.
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Kolbe electrometer, precision form of gold-leaf instrument. This has a light pivoted aluminum vane hanging next to a vertical metal plate. When charged the vane is repelled by the plate and hangs at an angle.
An electrometer is an electrical instrument for measuring electric charge or electrical potential difference.[1] There are many different types, ranging from historical handmade mechanical instruments to high-precision electronic devices. Modern electrometers based on vacuum tube or solid-state technology can be used to make voltage and charge measurements with very low leakage currents, down to 1 femtoampere. A simpler but related instrument, the electroscope, works on similar principles but only indicates the relative magnitudes of voltages or charges.
^Fleming, John Ambrose (1911). "Electrometer" . In Chisholm, Hugh (ed.). Encyclopædia Britannica. Vol. 9 (11th ed.). Cambridge University Press. pp. 234–237.
An electrometer is an electrical instrument for measuring electric charge or electrical potential difference. There are many different types, ranging from...
A Lippmann electrometer is a device for detecting small rushes of electric current and was invented by Gabriel Lippmann in 1873. The device consists of...
allowed him to develop a sensitive capillary electrometer, subsequently known as the Lippmann electrometer which was used in the first ECG machine. In...
Faraday cup electrometer is the simplest form of an electrical aerosol instrument used in aerosol studies. It consists of an electrometer and a filter...
piezoelectricity. To aid this work they invented the piezoelectric quartz electrometer. The following year they demonstrated the reverse effect: that crystals...
Augustus Waller invented an ECG machine consisting of a Lippmann capillary electrometer fixed to a projector. The trace from the heartbeat was projected onto...
and proven to exist in 1912, as the scientist Victor Hess carried an electrometer to various altitudes in a free balloon flight. The nature of these radiations...
instrument that measures electric charge quantitatively is called an electrometer. The electroscope was the first electrical measuring instrument. The...
and 1880, was primarily in electrostatics. He invented an induction electrometer, with the help of Dr. Matthew Van Schaeick of the Humboldt University...
creation of a Townsend avalanche for every alpha particle entering the vessel. At very low count rates these registered as "kicks" on an electrometer needle....
instruments for measuring the atmospheric electric field, using some of the electrometers he had initially developed for telegraph work, which he tested at Glasgow...
unit with lock-in amplifier and backing potential controller. On the right is the x, y, z scanning axis with vibrator, electrometer and probe mounted....
for classroom demonstrations, has been superseded by the electronic electrometer.: 2–5 The movement of electric charge is known as an electric current...
Class of accuracy in electrical measurements Electrical measurements Electrometer Electronic test equipment Metrology Multimeter Ohmmeter Potentiometer...
field. This generates an ionization current which is measured by an electrometer circuit in the region of femtoamperes to picoamperes, depending on the...
developed a version of the electrometer, a sensitive device for measuring electric charge. Using her husband's electrometer, she discovered that uranium...
the electrode in question is connected to the positive terminal of the electrometer, while the standard hydrogen electrode is connected to the negative terminal...
equipment bears his name today as the: Shonka ionization chamber, the Shonka electrometer, and Shonka plastics. In 1906, Francis R. Shonka was born at Linwood...
dosimeter (SIPD) or self reading pocket dosimeter (SRPD) or quartz fibre electrometer (QFE), is a type of radiation dosimeter, a pen-like device that measures...
voltage changes recorded from the cell. The "amplifier" is actually an electrometer, sometimes referred to as a "unity gain amplifier"; its main purpose...
sample by creating charged aerosol particles which are detected using an electrometer. It is commonly used for the analysis of compounds that cannot be detected...
electromagnetism and Covariant formulation of classical electromagnetism) Electrometer is often used to reconfirm the phenomenon of contact electricity leading...
Apkarian, V. Ara (June 2018). "Microscopy with a single-molecule scanning electrometer". Science Advances. 4 (6): eaat5472. Bibcode:2018SciA....4.5472L. doi:10...
University from 1904 to 1914 and 1918-1935. He designed and built an electrometer which could detect the presence of energetic charged particles (or electromagnetic...
reactance and susceptance Magnetic flux Electrical charge by the means of electrometer Partial discharge measurement Magnetic field by the means of Hall sensor...
potential measurements are performed with the positive terminal of the electrometer connected to the working electrode and the negative terminal to the reference...
and a grid. The collector current is measured in picoamperes by an electrometer. The filament voltage to ground is usually at a potential of 30 volts...
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