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.
Voltage ( = Electric Potential ) An electric charge alters the space around it. Throughout the space around every charge is a vector thing called the electric field. Also filling the space around every charge is a scalar thing, called the voltage or the electric potential. Electric fields and voltages are two different ways to describe the same thing. (Note on terminology: The text book uses the term electric potential, but it is easy to confuse electric potential with potential energy, which is something different. So I will use the term voltage instead.) Voltage overview The voltage at a point in empty space is a number (not a vector) measured in units called volts (V) . Near a positive charge, the voltage is high. Far from a positive charge, the voltage is low. Voltage is a kind of electrical height. Voltage is to charge like height is to mass. It takes a lot