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62 [[check mark]] Monday Oct 9 much stronger than that produced by the transmission of the ball from the plus state to the neutral. Or in other words, the induction is due to the sudden passage through the ball of all the electricity of the jar which for a moment produces a greater effect than the discharge of the ball, as in the case of exp 4, [[strikethrough]] 1 [[/strikethrough]] page 60, with the insulated plate. All the experiments would seem to indicate that the wire acts as though a quantity of additional electricity were added to it for a moment. Perhaps this may not be the case in a very long wire. In reflecting on the subject of the passage of electricity along the surface of a body, I am led to conclude that it does not follow that a greater conducting power will be given to a conductor of metal by flattening it so as to increase the surface. The opposite sides which by this process are brought into more near approximation, will cause a greater repulsion of the electricity and thus increase the resistance. [[vertical marginal entry underlined]] See Snow Harris' paper [[/vertical marginal entry]] [[vertical squiggle in margin along this paragraph]] The tendancy to spread must be greater in a long than in a short conductor, because the attraction for the negative surface [[strikethrough]] from [[/strikethrough]] to which the discharge is tending, will prevent a wide deviation from the direct path, but this tendancy to spread will be greater in proportion to the length of the conduction. Faradays proposition relative to the equality of the amount of negative induced electricity, and the positive is correct - the negative ball will not be as strongly electrified, but the difference will be made up by the induction on the [[covering?]] objects. [[drawing showing positive and negative balls]] [[end page]] [[start page]] 63 [checkmark] Tuesday Oct 10 1843 [[vertical squiggly line]] The spreading of the electrical discharge from a prime conductor is shown in the experiment of passing the spark through a vacuum. The beams fill all the bulls eye receivers. Try this experiment in the dark, with the the discharge from an insulated Lyden jar. The experiments of Priestly on the lateral discharge are not in discordance with the results I have obtained. A spark passed from the outside of the jar to a neighboring conductor and back again, without imparting but a very small charge to the conductor. [[illustration of pane of glass and wire with arrow pointing downwards in left margin]] [[underline]] Wednesday [[/underline]]Oct 11th Charged a pane of glass coated with tin foil on the two faces with the idea that the direction of the induction with this apparatus might be different from that with the jar, but the result was the same, the direction of the current as indicated by the magnetisation of the needle, was constantly from the glass, whether the receiving ball was in contact with the negative or positive side of the plate. The experiment was repeated many times in succession, and always with the same result. It appears that the induction is produced by the sudden transfer of the electricity from one side to the other of the glass, and that the effect is felt through the glass, the distance or rather difference of distance may be considered as nothing. When the discharge of the plate was produced by drawing off the electricity from the + side of the plate, the receiving ball being on the minus side, the needle was magnetized by an ascending current, as might have been expected. That the suggestion I stated above is true, is shown by the fact that when the jar was discharged slowly
Transcription Notes:
Underlined text running alongside 3rd paragraph that I can not decipher. Was unsure how to notate above. As well along the last paragraph, an illustration, unsure how to notate.
