ศัพท์เทคElectrostatic coupling is the most common
reason readings may be noisy when
making high resistance measurements. Electrostatic
interference occurs when an electrically
charged object is brought near an uncharged
object. At low impedance levels, the
effects of the interference are not noticeable
because the charge dissipates rapidly. However,
high resistance materials do not allow
the charge to decay quickly, which may result
in unstable measurements. Shielding
and guarding are both important with high
resistance measurements.นิคภาษาอังกฤษ