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- Body_capacitance abstract "Body capacitance refers to the physical property of the human body that has it act as a capacitor. Like any other electrically-conductive object, a human body can store electric charge if insulated. The actual amount of capacitance varies with the surroundings; it would be low when standing on top of a pole with nothing nearby, but high when leaning against an insulated, but grounded large metal surface, such as a household refrigerator, or a metal wall in a factory.Synthetic fabrics and friction can charge a human body to about 3 kV. Low potentials may not have any notable effect, but some electronic devices can be damaged by modest voltages of 100 volts. Electronics factories are very careful to prevent people from becoming charged up. A whole branch of the electronics industry deals with preventing static charge build-up and protecting products against electrostatic discharge.Notably, a combination of footwear with some sole materials, low humidity, and a dry carpet (synthetic fiber in particular) can cause footsteps to charge a person's body capacitance to as much as a few tens of kilovolts with respect to the earth. The human and surroundings then constitute a highly charged capacitor. A close approach to any conductive object connected to earth (ground) can create a shock, even a visible spark.Body capacitance was a significant nuisance when tuning the earliest radios; touching a tuning knob would couple the body capacitance into the tuning circuit, slightly changing its resonant frequency. However, body capacitance is very useful in the Theremin, a musical instrument in which it causes slight frequency shifts of the instrument's internal oscillators. One of them changes pitch, and the other causes loudness (volume) to change smoothly between silence and full amount.Capacitance of a human body in normal surroundings is typically in the tens to low hundreds of picofarads, which is small by typical electronic standards. While humans are much larger than typical electronic components, they are also mostly separated by significant distance from other conductive objects. Although the occasional static shock can be startling and even unpleasant, the amount of stored energy is relatively low, and won't harm a healthy person.The Human Body Model for capacitance, as defined by the Electrostatic Discharge Association (ESDA) is a 100pF capacitor in series with a 1.5kΩ resistor".
- Body_capacitance wikiPageExternalLink ElectrostaticsModeling.html.
- Body_capacitance wikiPageID "5314955".
- Body_capacitance wikiPageLength "3834".
- Body_capacitance wikiPageOutDegree "14".
- Body_capacitance wikiPageRevisionID "667568771".
- Body_capacitance wikiPageWikiLink Antenna_(radio).
- Body_capacitance wikiPageWikiLink Capacitor.
- Body_capacitance wikiPageWikiLink Category:Biotechnology.
- Body_capacitance wikiPageWikiLink Category:Capacitors.
- Body_capacitance wikiPageWikiLink Category:Energy_storage.
- Body_capacitance wikiPageWikiLink Electrostatic_discharge.
- Body_capacitance wikiPageWikiLink Human_body.
- Body_capacitance wikiPageWikiLink Ohm.
- Body_capacitance wikiPageWikiLink Test_light.
- Body_capacitance wikiPageWikiLink Theremin.
- Body_capacitance wikiPageWikiLink Touch-sensitive_lamp.
- Body_capacitance wikiPageWikiLink Touch_screen.
- Body_capacitance wikiPageWikiLink Touchscreen.
- Body_capacitance wikiPageWikiLink Triboelectric_effect.
- Body_capacitance wikiPageWikiLink Triboelectric_series.
- Body_capacitance wikiPageWikiLink Voltage_tester.
- Body_capacitance wikiPageWikiLinkText "Body capacitance".
- Body_capacitance wikiPageWikiLinkText "body capacitance".
- Body_capacitance wikiPageWikiLinkText "human body model".
- Body_capacitance hasPhotoCollection Body_capacitance.
- Body_capacitance wikiPageUsesTemplate Template:Citation_needed.
- Body_capacitance wikiPageUsesTemplate Template:Multiple_issues.
- Body_capacitance wikiPageUsesTemplate Template:Reflist.
- Body_capacitance subject Category:Biotechnology.
- Body_capacitance subject Category:Capacitors.
- Body_capacitance subject Category:Energy_storage.
- Body_capacitance type Article.
- Body_capacitance type Article.
- Body_capacitance type Component.
- Body_capacitance comment "Body capacitance refers to the physical property of the human body that has it act as a capacitor. Like any other electrically-conductive object, a human body can store electric charge if insulated.".
- Body_capacitance label "Body capacitance".
- Body_capacitance sameAs مواسعة_الجسم.
- Body_capacitance sameAs m.0df2q6.
- Body_capacitance sameAs Q4936889.
- Body_capacitance sameAs Q4936889.
- Body_capacitance wasDerivedFrom Body_capacitance?oldid=667568771.
- Body_capacitance isPrimaryTopicOf Body_capacitance.