Only a moderate amount of electric currentis thus consumed in maintaining the oscillation of the plate.
It will be found that such excitatory movement is caused by a mechanical blow, by a prick or a cut, by the application of certain chemical agents, by the action of electric current and by the action of strong light.
Electromagnet M, M′, periodically magnetized by completion ofelectric current by clockwork C.
All these results show that the power of inducing electric currents is circumferentially exerted by a magnetic resultant or axis of power, just as circumferential magnetism is dependent upon and is exhibited by an electric current.
A] The relative position of an electric current and a magnet is by most persons found very difficult to remember, and three or four helps to the memory have been devised by M.
Even before the true dynamo was invented the magneto-electric machine was employed for producing an electric current to supply electric light.
Arago in the same year discovered that a steel rod was magnetized when placed across a wire carrying an electric current, and that iron filings adhered to a wire carrying a voltaic current and dropped off when the current was broken.
Lavoisier and the chemists of his time were not able to decompose the oxygen compounds of these metals, but Davy showed that they might be decomposed by an electric current, the metals sodium and potassium appearing at the negative pole.
The influence of an electric current, and of electricity in general, on the progress of chemical transformations is very similar to the influence of heat.
Now that the dynamo gives the possibility of producing an electric currentby the combustion of fuel, this method of Sir H.
Both carbon and tungsten resist an electric current so much that they are easily heated white hot by it.
Remember that the hydrogen which the zinc is driving out of the acid is exactly the same as the hydrogen you drove out of water with an electric current.
The smaller around a wire is, the greater resistance it offers to the passing of an electric current.
Nothing short of what is called a miracle will do--an event without a physical antecedent in any way necessarily related to its factors, as is the fact of a stone related to gravity or heat to an electric current.
The mechanical contraction of them results in an electrical excitation, and, if a proper circuit be provided, in an electric current.
The source of heat throughout these comparative experiments consisted of a platinum wire, raised to incandescence by anelectric current of unvarying strength.
The wire being raised to a white heat by an electric current, the air expanded, and some of it was forced through the cotton-wool.
The platinum spiral, so often referred to, being raised to whiteness by an electric current, a brilliant spectrum was formed from its light.
How an Electric Current is Changed into Magnetic Lines of Force and These into an Electric Current (C) and (D) Fig.
The Effect of Resistance on the Discharge of an Electric Current Fig.
How an Electric Current Sets up a Magnetic Field Fig.
In 1831, Professor Joseph Henry, one of America's most distinguished scientists, discovered a method by which an electric current could be sent along a wire for a very great distance.
Many years before the invention of Chappe men had been experimenting with electricity with a view of sending messages by means of an electric current.
About the same time a Frenchman named Bourseul produced a device by which a disk vibrating under the influence of the human voice would, by means of an electric current, produce similar vibrations of a disk located at a distance.
When there is no electric current available, matches or candles may be used and inserted through the holes H, as shown in the sketch, alternately.
Joerin A novel way of producing anelectric current by means of hot and cold water, heat from a match or alcohol [Illustration: Details of Battery] lamp, is obtained from a device constructed as shown in the sketch.
The accompanying diagram shows how to make the connection that will ring a bell by electric current at the time set without winding the alarm.
On bringing down on to the mercury surface a wire conveying an electric current, and allowing the current to pass through the mercury and out at the bottom, the magnetic pole at once began to rotate round the wire (Exper.
Faraday's copper disk rotated between the poles of a magnet, and producing thereby an electric current, became the parent of innumerable machines in which mechanical energy was directly converted into the energy of electric currents.
He then found that a conductor, the ends of which were connected respectively with the centre and edge of the disk, was traversed by an electric current.
It produces its effects by the changes of intensity in an electric current, occasioned by the variations in the contact resistance of conducting bodies, especially of imperfect conductors, under the action of acoustic vibrations.
Defn: A cell (as one of two electrodes embedded in selenium) which by exposure to light generates an electric current.
Defn: An instrument or apparatus for measuring the intensity of an electric current, usually by the deflection of a magnetic needle.
Electric fuze, a fuze which is ignited by heat or a spark produced by an electric current.
As the rate of flow of a river is determined by the character of its bed, its gradient, and other circumstances, so the velocity of an electric current is found to depend on the conditions under which the flow takes place.
He knew that the wire which carried an electric current was an electrified body, and still that all attempts had failed to make it excite in other wires a state similar to its own.
He had succeeded in producing, artificially, certain of the vowel sounds by causing tuning forks of different pitch to vibrate simultaneously by means of an electric current.
If an electric currentbe passed through pairs of metals, the parts at the junction become slightly warmer or cooler than before, depending upon the direction of the current.
The dynamo is a machine that will convert steam power, for example, into an electric current.
The Dynamo=, Dynamo-Electric Machine or Generator, is a machine for converting mechanical energy into an electric current, through electromagnetic induction.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "electric current" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
