Musschenbroek, Petrus van - Physicae experimentales, et geometricae de magnete, tuborum capillarium vitreorumque speculorum attractione, magnitudine terrae, cohaerentia corporum firmorum dissertationes: ut et ephemerides meteorologicae ultraiectinae

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4329DE MAGNETE. in Experimento V.) ſuſpendi ex Libræ brachio, quo prius ope pon-
deris Lanci injecti reducto ad æquilibrium, repulſionis magnitudines
obſervavi ſequentes.

11
Repulſiones ad diſtantiam \\ poll. # Linear. # æquales granis Medicis.
14 # 0 # {1/2}
13 # 0 # {3/4}
11 # 9 # 1
10 # 9 # {1/2}
10 # 4 # 0 # } # ſive ſimplex æquilibrium uti \\ ante inſtituta Experimenta.
9 # 10 # 0
9 # 4 # {1/4}
9 # 0 # {1/4}
8 # 3 # {3/4}
7 # 9 # 1
7 # 6 # 1 {1/2}
6 # 9 # 2
6 # 4 # 2 {1/2}
5 # 9 # 2
5 # 4 # 2
5 # 2 # 2 {1/2}
4 # 9 # 3
3 # 10 # 1

Quando Magnetem alteri propius admovebam, non amplius re-
pellebatur, ſed attrahebatur: nam ad diſtantiam 3 pollic. 6 linear.
erat attractio æqualis 7 granis. Neſcio an quidem aliquid plus ano-
mali obſervari poſſit, quam repulſiones hæ demonſtrant, quæ in
magna diſtantia 14 pollicum ſunt notabiles, in minori æquali 10 poll.
obſervabatur nulla, tum iterum in propiori diſtantia usque ad 4 polli-
ces, increſcebat, dein in propiori decreſcebat, tum mutabatur in
vim attrahentem: Polinierius in Experienc. Phyſiq. pag. 279. etiam
adnotavit, quod Polus Magnetis, qui acus nauticæ extremitatem
repellebat in majori diſtantia, eam attrahebat cum propius admove-
batur: quicquid horum ſit, valde anomali ſunt hi effectus: quare
cum alio Magnete, quo uſus fui in Experimento III. idem

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