A census is a count and description of the population, taken by the government, arranged by locality and by household. Read more about Scotland Census Records. Click here for a list of the Family History Library microfilm numbers for the census records of Ruthwell. Below is information for any known surname indexes:
The concept of the electric field was first introduced by 19th century physicist Michael Faraday. It was Faraday's perception that the pattern of lines characterizing the electric field represents an invisible reality.
Electric Field Lines â¢ Lines point in the same direction as the field. â¢ Density of lines gives the magnitude of the field. â¢ Lines begin on + charges; end on âcharges. We visualize the field by drawing field lines. These are defined by three properties: From these properties it is easy to see that â¢ Field lines never cross