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A digital electrostatic fieldmeter for measuring electrostatic charges. An electrostatic fieldmeter, also called a static meter is a tool used in the static control industry. It is used for non-contact measurement of electrostatic charge on an object.
In classical electrostatics, the electrostatic field is a vector quantity expressed as the gradient of the electrostatic potential, which is a scalar quantity denoted by V or occasionally φ, [1] equal to the electric potential energy of any charged particle at any location (measured in joules) divided by the charge of that particle (measured ...
When measuring with a field strength meter it is important to use a calibrated antenna such as the standard antenna supplied with the meter. For precision measurements the antenna must be at a standard height. A value of standard height frequently employed for VHF and UHF measurements is 10 metres (33 ft).
In solid-state physics, especially for metals and semiconductors, the screening effect describes the electrostatic field and Coulomb potential of an ion inside the solid. Like the electric field of the nucleus is reduced inside an atom or ion due to the shielding effect , the electric fields of ions in conducting solids are further reduced by ...
Objects protruding these fields, e.g. flowers and trees, can increase the electric field strength to several kilovolts per meter. [19] These near-surface electrostatic forces are detected by organisms such as the bumblebee to navigate to flowers [ 19 ] and the spider to initiate dispersal by ballooning .
Too cheap to meter refers to a commodity so inexpensive that it is cheaper and less bureaucratic to simply provide it for a flat fee or even free and make a profit from associated services. Originally applied to nuclear power , the phrase is also used for services that can be provided at such low cost that the additional cost of itemized ...
As the liquid cusps form ever sharper cones due to the action of the electric field, the local electric field strength near these cusps intensifies. Once a local electric field strength of about 10 9 V/m is reached, electrons are ripped off the metal atoms. These electrons are collected through the liquid metal column by the channel walls, and ...
Electrostatic analyzers are designed in different configurations. A simple version is a radial cylindrical analyzer, which consists of two curved parallel plates at different potentials. Ions or electrons enter the analyzer at one end and either pass through the other end or collide with the walls of the analyzer, depending on their initial energy.