More likely to get a shock on a dry day?

Thread starter elektrik
Start date Mar 30, 2008
Tags

Shock

AI Thread Summary

Static shocks are more common on dry days due to lower humidity levels, which prevent the dissipation of static electricity. In dry conditions, static builds up as people move, and it remains stored until they touch a conductor, like a car door or another person. Conversely, moist air allows for quicker discharge of static electricity, reducing the likelihood of experiencing a shock. This phenomenon is primarily due to the conductivity of water vapor in the air, which facilitates the release of static charges. Therefore, the weather significantly influences the occurrence of static electricity shocks.

Mar 30, 2008

elektrik

Why are we more likely to get a shock on a dry day than on a rainy day?

Engineering news on Phys.org

Mar 30, 2008

montoyas7940

When the air is dry you don't discharge static you build up while moving, until you touch some other decent conductor such as your sweeties lips or your car door. When the air is moist you discharge to the air as quickly as you charge.

Thread '3-terminal device external modeling'

Very basic question. Consider a 3-terminal device with terminals say A,B,C. Kirchhoff Current Law (KCL) and Kirchhoff Voltage Law (KVL) establish two relationships between the 3 currents entering the terminals and the 3 terminal's voltage pairs respectively. So we have 2 equations in 6 unknowns. To proceed further we need two more (independent) equations in order to solve the circuit the 3-terminal device is connected to (basically one treats such a device as an unbalanced two-port...

View full post »

Thread 'Question about the voltage between two charged capacitors'

suppose you have two capacitors with a 0.1 Farad value and 12 VDC rating. label these as A and B. label the terminals of each as 1 and 2. you also have a voltmeter with a 40 volt linear range for DC. you also have a 9 volt DC power supply fed by mains. you charge each capacitor to 9 volts with terminal 1 being - (negative) and terminal 2 being + (positive). you connect the voltmeter to terminal A2 and to terminal B1. does it read any voltage? can - of one capacitor discharge + of the...

View full post »

Thread 'Weird near-field phenomenon I get in my EM simulation'

I recently made a basic simulation of wire antennas and I am not sure if the near field in my simulation is modeled correctly. One of the things that worry me is the fact that sometimes I see in my simulation "movements" in the near field that seems to be faster than the speed of wave propagation I defined (the speed of light in the simulation). Specifically I see "nodes" of low amplitude in the E field that are quickly "emitted" from the antenna and then slow down as they approach the far...

View full post »