Vis Viva.
The kinetic energy of a body in motion; "mechanical energy."
Vitreous Electricity.
Positive electricity; the electricity produced on the surface of glass
by rubbing it with silk and other substances. (See Electrostatic
Series.)
The term "positive electricity" should be allowed to supplant it. It is
the analogue and opposite of resinous electricity.
Vitriol, Blue.
A colloquial or trade name for copper sulphate (Cu SO4).
Vitriol, Green.
A colloquial or trade name for ferrous sulphate (Fe SO4).
Vitriol, White.
A colloquial or trade name for zinc sulphate (Zn SO4).
Volt.
The practical unit of electro-motive force or potential difference. It
may be referred to various data.
An electro-motive force of one volt will cause a current of one ampere
to flow through a resistance of one ohm.
A condenser of one farad capacity charged with one coulomb will have a
rise of potential of one volt.
The cutting of 100,000,000 lines of force per second by a conductor
induces one volt E. M. F.
A Daniell's battery gives an E. M. F. of 1.07 volts; about the most
familiar approximate standard that can be cited.
It is equal to 1/300 absolute electrostatic unit.
It is equal to 1E8 absolute electro-magnetic units.
[Transcriber's note: The SI definition of a volt: The potential
difference across a conductor when a current of one ampere dissipates
one watt of power.]
Voltage.
Potential difference or electro-motive force expressed in volts; as a
voltage of 100 volts. Thus voltage may express the electro-motive force
absorbed in a conductor, while electro-motive force is a term generally
applied where it is produced, evolved or present in the object. The term
voltage of a lamp expresses simply the volts required, but does not
suggest the possession of electromotive force.