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What exactly is breakdown voltage of air? - Physics Stack Exchange
https://physics.stackexchange.com/questions/250040/what-exactly-is-breakdown-voltage-of-air
WEBMost of the online sources say that the breakdown voltage of air is 30kV/cm. I've made a Cockcroft Walton multiplier and I can see the air breaking in between 17-18kV/cm. Only in a discussion at one online forum : , someone claimed it to be 17kV/cm. What exactly is breakdown voltage of air at STP? charge. voltage. air. dielectric. Share. Cite.
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Paschen's law - Wikipedia
https://en.wikipedia.org/wiki/Paschen%27s_law
WEBFor example, in air, at a pressure of one atmosphere, the distance for minimal breakdown voltage is about 7.5 μm. The voltage required to arc this distance is 327 V, which is insufficient to ignite the arcs for gaps that are either wider or narrower. For a 3.5 μm gap, the required voltage is 533 V, nearly twice as much.
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Breakdown voltage - Wikipedia
https://en.wikipedia.org/wiki/Breakdown_voltage
WEBTwo different breakdown voltage measurements of a material are the AC and impulse breakdown voltages. The AC voltage is the line frequency of the mains . The impulse breakdown voltage is simulating lightning strikes, and usually uses a 1.2 microsecond rise for the wave to reach 90% amplitude, then drops back down to 50% amplitude after 50 ...
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How to Calculate Breakdown Voltage | Sciencing
https://sciencing.com/calculate-breakdown-voltage-6728339.html
WEBFrom engineering and physical tables, the typical range for the breakdown voltage in air is expected to be 20 kV to 75 kV. There are other factors that influence the breakdown voltage in air, e.g., humidity, thickness, and temperature, hence the wide range.
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Electrical breakdown - Wikipedia
https://en.wikipedia.org/wiki/Electrical_breakdown
WEBAcross relatively small gaps, breakdown voltage in air is a function of gap length times pressure. If the voltage is sufficiently high, complete electrical breakdown of the air will culminate in an electrical spark or an electric arc that bridges the entire gap.
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Breakdown Voltage | Paschen Curve | Altitude and Pressure
http://www.highvoltageconnection.com/articles/paschen-curve.html
WEBUsing Paschen's Law, the minimum breakdown in air is calculated to be 327 V at standard atmospheric pressure. This occurs at a distance of 7.5 µm. Below is the “Paschen Curve” for air, two flat parallel copper electrodes, separated by 1 inch, for pressures between 3x10-2 Torr and 760 Torr.
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Air Breakdown - Physics and Astronomy | The University of …
https://homepage.physics.uiowa.edu/~rmerlino/129Fall12/air%20breakdown.pdf
WEBPaschen curve for air Breakdown voltage vs. Pressure For air with a 2.5 mm gap 1 atm = 760 Torr = 1.013 105 Pa HV PS GAS gap, d E. Breakdown Voltage vs. Pressure (Air - 0.1 inch Gap) 10000 1_00E+D2 1.00E+03 Pressure - Torr . Title: Microsoft Word - air breakdown.doc Author: Bob
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Ionizing the Air - HyperPhysics
http://hyperphysics.phy-astr.gsu.edu/hbase/electric/airionize.html
WEBThe voltage required to produce an electric arc across a centimeter of air is in the neighborhood of 30,000 volts, so this arc may represent about 300,000 volts produced by the van de Graaf. The van de Graaf can also be used to excite spectral tubes with specific gases in them and will display the characteristic colors for those gases.
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9 Electricity in the Atmosphere - The Feynman Lectures on Physics
https://www.feynmanlectures.caltech.edu/II_09.html
WEBThese large voltages break down the air and create giant arc discharges. When the breakdown occurs the negative charges at the bottom of the thunderstorm are carried down to the earth in the lightning strokes.
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Paschen's Law | Wolfram Formula Repository
https://resources.wolframcloud.com/FormulaRepository/resources/Paschens-Law
WEBPaschen's Law. Paschen's law is an equation that gives the breakdown voltage—that is, the voltage necessary to start a discharge or electric arc between two electrodes in a gas as a function of pressure and gap length. air
air
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