Experiments concerning the different efficacy of pointed and blunted rods, in securing buildings against the stroke of lightning / [William Henley].

  • Henley, William.
Date:
1774
Catalogue details

Licence: Public Domain Mark

Credit: Experiments concerning the different efficacy of pointed and blunted rods, in securing buildings against the stroke of lightning / [William Henley]. Source: Wellcome Collection.

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    Experiments concerning the different Efficacy of pointed and blunted Rods, in fecuring Buildings againjl the Stroke of Light- rung. FROM an accident which lately happened to the chapel in Tottenham- court road, where a poor man was killed, an account of which I had rhe honour of prefbiiting to the. Royal Society, the Gentlemen*, who have the, care of that building* were defirous of erecting a proper conductor* to prevent fuch accidents ihy future ; which was done accordingly under my direction* except three points at the top* to which I rather incline to prefer a lingle one. On this occafion, I was willing to obtain the belt in¬ formation I could, upon the queftion, whether the preference be, due to points or knobs, for the ter¬ mination of conductors ; for which purpofe, I made, the. following experiments^ ! ’ ' ! ' ‘ v ' ■ v-■ •* • EXPERIMENT I*. I placed two of Mr. canton’s eledfrometers, A*, and B. [See Plate, Fig. i.] infulated, upon ftands