Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: May 20, 2025
The particles constituting it are constantly in motion. When heat or cold penetrate the mass it does so, in a general way, so as to permeate the entire body, but the conductivity of the atmospheric gases is such that the heat does not reach all parts at the same time.
Unfortunately, on account of the presence of the saline sea-water, the submersible is practically shielded by a conducting medium in which are set up eddy currents. Although the sea-water may lack somewhat in conductivity, it compensates for this by its volume. For this reason, the induction balance has proved a failure.
I need a metal of greater conductivity than any attainable to get real results. The carbon that I am using does not throw off enough radio activity to produce a sufficient number of electric impulses to the atmosphere." Jack and Tom looked puzzled. "You don't understand me I see," said Mr. Chadwick. "No, I must say I don't," said Jack; "you see " "It's pretty technical," broke in Tom.
It is probable that silicon acts to a certain extent as a fluxing material upon the oxides present in the copper, thereby making the metal more homogeneous. On account of its superior strength and high conductivity for electrical currents, silicon bronze is the best material known for telegraph and telephone wire.
I attribute the result to the high conductivity of the air, the molecules of which then do not act as independent carriers of electric charges, but act all together as a single conducting body. In such case, of course, if there is any repulsion at all of the molecules from the vanes, it must be very small.
Now, when the oxide of zinc is formed by the oxygen uniting with the zinc, the free sulphuric acid combines with it, forming more sulphate of zinc, and maintaining the CONDUCTIVITY of the cell. It is only necessary to keep up the supply of zinc, water, and sulphate of copper to procure a steady current of electricity. The Daniell cell is constructed in various ways.
For instance, at the time when he was making strenuous endeavors to obtain copper wire of high conductivity, strict laboratory tests were made of samples sent by manufacturers. One of these samples tested out poorer than a previous lot furnished from the same factory. A report of this to Edison brought the following note: "Perhaps the wire had a bad spot in it.
"Either they increase the central energy without affecting the nerves, or they simply increase the available energy by lowering the nervous conductivity; and all of them are unequal and local in their operation.
Lightning is merely the etheric electricity, drawn to the earth whenever there is enough water in the air to promote conductivity." "Yes," agreed Smith; "but what of it?" Kinney went on unheeding. "As for volcanoes probably the same explanation accounts for the lack of these also. You know how the earth, even, is rapidly coming to the end of her Volcanic period.
Experiments conducted at Harvard, U.S.A., by Professor Trowbridge have proved beyond a doubt that, by means of such delicate apparatus as the telephone and microphone, it is possible for the observer to state in which direction, from a given point, the best line of conductivity runs.
Word Of The Day
Others Looking