eng Ansari Education and Research Society Journal of Ultra Scientist of Physical Sciences April 2009 21 1 215 222 jusps-B 1099 article MAHENDRA SINGH 1 Department of Physics, Jagdam College, Chapra (INDIA) <p style="text-align: justify;">The design, fabrication and calibration of a d.c. electric field mill to measure electrostatic field of disturbed weather conditions of the atmosphere has been described. The electrical noise and complexity have been reduced by introducing the penchart recorder directly through a Teflon coated coaxial cable in place of pushpull d.c. amplifier, potentiometer and a galvanometer as used by Gunn³. Provision has been made for selecting the desired sensitivity of the electric field meter. The electric field mill provides a reliable output even in periods of severe conditions of the atmosphere.</p> https://ultraphysicalsciences.org/paper/1099/ D.C. Electric Field Mill for Measuring Vertical Gradient of Atmosphere