DIAMAGNETISM  . Substances which, like See also:

• IRON [symbol Fe, atomic weight 55.85 (0=16)]

iron, are attracted by the See also:

• POLE (FAMILY)
• POLE, REGINALD (1500-1558)
• POLE, RICHARD DE LA (d. 1525)
• POLE, WILLIAM (1814—1900)

pole of an See also:

• ORDINARY (med. Lat. ordinarius, Fr. ordinaire)

ordinary magnet are commonly spoken of as magnetic, all others being regarded as non-magnetic . It was noticed by A . C . See also:

• BECQUEREL

Becquerel in 1827 that a number of so-called non-magnetic bodies, such as See also:

• WOOD, ANTHONY A2 (1632-1695)
• WOOD, JOHN GEORGE (1827—1889)
• WOOD, MRS HENRY [ELLEN] (1814—1887)
• WOOD, SEARLES VALENTINE (1798—188o)

wood and See also:

• GUM (Fr. gomme, Lat. gommi, Gr. Kµµ1, possibly a Coptic word; distinguish " gum," the fleshy covering of the base of a tooth, in O. Eng. gbma, palate, cf. Ger. Gaumen, roof of the mouth; the ultimate origin is probably the root gha, to open wide, seen in

gum See also:

• LAC

lac, were influenced by a very powerful magnet, and he appears to have formed the See also:

• OPINION (Lat. opinio, from opinari, to think)

opinion that the See also:

• INFLUENCE (Late Lat. influentia, from influere, to flow in)

influence was of the same nature as that exerted upon iron, though much feebler, and that all See also:

• MATTER

matter was more or less magnetic . See also:

• FARADAY, MICHAEL (1791-1867)

Faraday showed in 1845 (Experimental Re-searches, vol. iii.) that while practically all natural substances are indeed acted upon by a sufficiently strong magnetic pole, it is only a comparatively small number that are attracted like iron, the See also:

• GREAT

great See also:

• MAJORITY (Fr. majorite; Med. Lat. majoritas; Lat. major, greater)

majority being repelled . Bodies of the latter class were termed by Faraday diamagnetics . The strongest diamagnetic substance known is See also:

• BISMUTH

bismuth, its susceptibility being—o•0000r4, and its See also:

• PERMEABILITY, MAGNETIC

permeability 0.9998 . The diamagnetic quality of this See also:

• METAL
• METAL (through Fr. from Lat. metallum, mine, quarry, adapted from Gr. µATaXAov, in the same sense, probably connected with ,ueraAAdv, to search after, explore, µeTa, after, aAAos, other)

metal can be detected by means of a See also:

• GOOD, JOHN MASON (1764-1827)

good permanent magnet, and its repulsion by a magnetic pole had been more than once recognized before the date of Faraday's experiments . The metals See also:

• GOLD
• GOLD [symbol Au, atomic weight 195.7(H = 1),197.2(0 =16)]

gold, See also:

• SILVER

silver, See also:

• COPPER (symbol Cu, atomic weight 63.1, H=1, or 63.6, O = 16)

copper, See also:

• LEAD
• LEAD (pronounced iced)

lead, See also:

• ZINC

zinc, See also:

• ANTIMONY (symbol Sb, atomic weight 120.2)

antimony and See also:

• MERCURY
• MERCURY (MERCU1uus)
• MERCURY (symbol Hg, atomic weight = 2oo)

mercury are all diamagnetic; See also:

• TIN (Lat.- stannum, whence the chemical symbol " Sn "; atomic weight =117.6, 0=16)

tin, See also:

• ALUMINIUM (symbol Al; atomic weight 27.0)

aluminium and See also:

• PLATINUM [symbol Pt, atomic weight 145.0 (0=16)]

platinum are attracted by a very strong pole .