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Updated: May 22, 2025
One of the most characteristic attributes of radiant matter whence its name is that it moves in approximately straight lines and in a direction almost normal to the surface of the electrode.
This done connect the other terminal of the filament to one post of the rheostat and the other post of this to the or negative side of the A battery. To the + electrode of the A battery connect the or zinc pole of the B battery and connect the + or carbon pole of the latter with one post of the fixed .001 microfarad condenser.
If the carborundum proves useful in connection with these and similar experiments, its chief value will be found in the production of coatings, thin conductors, buttons, or other electrodes capable of withstanding extremely high degrees of heat. The production of a small electrode capable of withstanding enormous temperatures I regard as of the greatest importance in the manufacture of light.
To the eye the electrode appears uniformly brilliant, but there are upon it points constantly shifting and wandering around, of a temperature far above the mean, and this materially hastens the process of deterioration.
When tested with the galvanic current, it is found that a stronger current must be used to call forth contraction than in a healthy muscle, and the contraction appears first at the closing of the circuit when the anode is used as the testing electrode.
That some such thing occurs, at least when the electrode is at a lower temperature, sufficient experimental evidence can be obtained in the following manner: Exhaust a bulb to a very high degree, so that with a fairly high potential the discharge cannot pass that is, not a luminous one, for a weak invisible discharge occurs always, in all probability.
It will often happen that diseased action is found in parts where the patient was entirely unaware of its existence until the practitioner's fingers or other electrode revealed it. Again, it will sometimes be found that there is no disease whatever in parts where the patient supposed disease to be active.
Its negative pole is the negative electrode in contact with the positive end or pole of magnet No. 2, and its positive pole is the wire end of the cord in the negative post.
As the number of electrons that are thrown off by the filament is not great and the voltage of the plate is not high the current that flows between the filament and the plate is always quite small. How the Two Electrode Tube Acts as a Detector. The two electrode vacuum tube was first made by Mr.
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