microfarad's Usage Examples:

The reason for this is that the capacity of a simple antenna is very small - it may be something of the order of 0.0002 of a microfarad - and hence the energy stored up in it even under a high voltage is also small.

Each conductor has a resistance (at 60° F.) of 5.74 ohms per statute mile, and an average electrostatic capacity per mile between adjacent wires of o 06 microfarad, or between wire and earth of o I microfarad; the insulation resistance of each wire is about 5000 megohms per mile.

The size of jar commonly known as a quart size may have a capacity from 4 o 0 th to s 00 oth of a microfarad, and if charged to 20,000 volts stores up energy from a quarter to half a joule or from -ths to Iths of a foot-pound.

Thus for instance the capacity in free space of a sphere 2 metres in diameter would be 100/900,000 = 1/9000 of a microfarad.

This unit is too small for practical purposes, and hence a unit of capacity 900,000 greater, called a microfarad, is generally employed.

Synonyms:

millifarad, capacitance unit, picofarad,