ampere

Definitions

  • WordNet 3.6
    • n ampere the basic unit of electric current adopted under the Systeme International d'Unites "a typical household circuit carries 15 to 50 amps"
    • n ampere a former unit of electric current (slightly smaller than the SI ampere)
    • ***
Webster's Revised Unabridged Dictionary
    • n Ampère (Elec) The unit of electric current; -- defined by the International Electrical Congress in 1893 and by U. S. Statute as, one tenth of the unit of current of the C. G. S. system of electro-magnetic units, or the practical equivalent of the unvarying current which, when passed through a standard solution of nitrate of silver in water, deposits silver at the rate of 0.001118 grams per second. Called also the international ampère.
    • ***
Century Dictionary and Cyclopedia
    • n ampere The unit employed in measuring the strength of an electrical current. It is the current which flows through a conductor whose resistance is one ohm, and between the two ends of which the unit difference of potentials, one volt, is maintained.
    • ***
Chambers's Twentieth Century Dictionary
    • n Ampere am-pehr′ in electricity, unit of current.
    • ***

Etymology

Webster's Revised Unabridged Dictionary
From the name of a French electrician
Chambers's Twentieth Century Dictionary
From Ampère, a French electrician who died in 1836.

Usage

In literature:

Five amperes at 1,100 volts pressure, gives the same number of watts, power, as 50 amperes, at 110 volts pressure.
"Electricity for the farm" by Frederick Irving Anderson
There are amperes, and there are volts, and there are kilowatt hours.
"David and the Phoenix" by Edward Ormondroyd
The storage battery used should be of the four-volt forty-ampere hour variety.
"Boys' Book of Model Boats" by Raymond Francis Yates
Currents as small as .000000000000000000000000001 ampere have been detected and measured.
"Astounding Stories of Super-Science, March 1930" by Various
How many amperes will they stand?
"Common Science" by Carleton W. Washburne
As a matter of fact we don't get amperes or even mil-amperes; we get millionths of an ampere or "microamperes," as we say.
"Letters of a Radio-Engineer to His Son" by John Mills
Additional evidence as to the structure of the molecule was discussed by Avogadro in 1811, and by Ampere in 1814.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1" by Various
The current from a Wilde's dynamo was passed, apparently with a current density of 5 or 6 amperes per sq.
"Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 3" by Various
Ampere discovered the galvanometer.
"The Scrap Book. Volume 1, No. 2" by Various
Ampere become celebrated, laden with honorable distinctions, the great Ampere!
"The Intellectual Life" by =Philip Gilbert Hamerton
For wiring work it is necessary to know the number of amperes the wire is to carry.
"A Living from the Land" by William B. Duryee
Ampere, M., on electric currents in the earth, 543.
"Principles of Geology" by Charles Lyell
The affection between Jean Jacques Ampere and Madame Recamier is the one that perhaps most nearly approaches it.
"Lafcadio Hearn" by Nina H. Kennard
Perhaps the investigations of Ampere conflict with it.
"The Philosophy of the Weather" by Thomas Belden Butler
The 24-volt lamp consumes about one-tenth of an ampere when fully illuminated, the lamp thus consuming about 2.4 watts.
"Cyclopedia of Telephony and Telegraphy, Vol. 2" by Kempster Miller
Take for instance an average hand-fed arc lamp as used for lantern work and consuming, say, 10 amperes.
"Optical Projection" by Lewis Wright
He frowned over such terms as micro-ampere and micro-volt.
"Whispering Wires" by Henry Leverage
The unit for measuring the current is called the "ampere," named after the French electrician, A. M. Ampere (1789-1836).
"Electricity and Magnetism" by Elisha Gray
For the total current we have approximately 2.5 X 10^(-16) amperes per sq.
"Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 8" by Various
The process of predetermining the necessary ampere-turns is described in a simple case under ELECTROMAGNETISM.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 9" by Various
***

In news:

Eisner LLP And Amper , Politziner & Mattia, LLP Join Forces.
In Part III of a four-part series on multimeters, it's all about amperes .
In the third of this ongoing series on digital multimeters, we'll address ampere measurement.
Vibano's Trattoria opens on Ampere Avenue.
Amper, Politziner & Mattia, LLP.
Amper, Politziner & Mattia, Certified Public Accountants and Consultants, is pleased to announce that Tim Van Noy , CPA, CFE has joined the firm as Director in the firm's Litigation & Valuation Group.
On the other hand, you can easily measure volts and amperes and calculate ohms and watts.
IN THE MID-1800'S, WHEN JOURNEYING UP THE Nile had just become the rage, a French traveler, M. Ampere, described the typical tour of Egypt as "a donkey ride and a boat trip interspersed with ruins".
A single disconnecting means for a building/structure must have an ampere rating not less than the calculated load as determined by Art 220.
Grace Amper still lives and teaches in Baltimore.
Kids You Should Know4850 Ampere Dr Reno, NV 89502.
The Long Island Pine Barrens Society, run by Dick Amper, announced that they are opposing the state DOT's plan to build a truck/ rail depot in Brentwood, because the group anticipates the project will have adverse affects on the environment.
Merely having a higher ampere overcurrent protective device (OCPD) feeding a lower ampere overcurrent protective device does not assure a circuit is selectively coordinated.
***

In science:

Smooth Regular solution: We call φ a smooth regular solution (sometimes smooth solution for simplicity) of the Monge-Ampere equation, if φ is smooth and gα ¯β + φα ¯β > 0 on fibers.
Test configurations and Geodesic rays
In fact, his proof works for Monge Ampere equation on general compact complex manifold with boundary.
Test configurations and Geodesic rays
Our example in section 7 showed a solution with no global C 3 bound. A similar setup to the geodesic equation is concerned Monege Ampere equation on M × D instead of M × (I × S 1 ).
Test configurations and Geodesic rays
Now we check ψ . ψ is S 1 invariant because the boundary condition ψ = 0 is S 1 invariant, and the uniqueness of Monge Ampere solution.
Test configurations and Geodesic rays
When we solve the Monge Ampere equation, this finite difference goes into the C 1,1 solutions φk and φn .
Test configurations and Geodesic rays
Following Donaldson’s idea , this section extends the correspondence in to the case of Monge Ampere equation on simple test configurations.
Test configurations and Geodesic rays
Vice versa, if one has the family, then it can induce a solution to Monge Ampere equation.
Test configurations and Geodesic rays
For a simple test configuration, the smooth solution of the Monge ampere equation induces a foliation of holomorphic discs on M which lift up to a family of holomorphic discs with in W .
Test configurations and Geodesic rays
We have found it extremely useful to clean the trap by passing several amperes of ac across it; the vacuum feedthrough structure of any future linear trap should be modular enough to enable this procedure.
Single barium ion spectroscopy: light shifts, hyperfine structure, and progress on an optical frequency standard and atomic parity violation
G maximum magnetic field at the cavity end-wall per ampere of current.
First high gradient test results of a dressed 325 MHz superconducting single spoke resonator at Fermilab
The ordinate axis shows the mean quantization step Qlif estimated at a given tobs in Amperes.
Streaming an image through the eye: The retina seen as a dithered scalable image coder
In electrodynamics, one additional basic unit is necessary: the ampere [A]1 as the unit of electric current.
Technical Notes on Classical Electromagnetism, with exercises
Yau, ”On the Ricci Curvature of Compact K¨ahler Manifolds and Complex Monge-Amper Equation I”, Comm.
Ray Singer Analytic Torsion of Calabi Yau manifolds I
Viaclovsky, Conformally invariant Monge-Ampere equations: global solutions, Trans.
Further results on Liouville type theorems for some conformally invariant fully nonlinear equations
If K is positive or negative at the point considered, then (5) is elliptic or hyperbolic Monge-Ampere equation and the local solvability is well known for both of them.
Some new developments of realization of surfaces into $R^3$
***