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細節
Four pieces of late 19th-Century laboratory equipment,
a paper-covered induction coil with an ivory plaque PATENT 512 APPS 433 Strand London, coiled copper wire to the ivory-handled brass discharge rods, tension screw, two terminals and an ivory-handled switch/current reverser, mounted on a mahogany plinth base -- 44.2cm. (17 3/8in.) wide; a de la Rive "Aurora" tube to demonstrate rotation of the electrical discharge due to electromagnetic field, with a painted cartouche on the base for F.E. BECKER & Co W. & J. GEORGE LTD 17-29 HATTON WALL LONDON, E.C.1. , the tube with two terminals and steel ring inside, fitting over an iron rod from a coil on the circular mahogany base with two terminals -- 36.8cm. (14½in.) high; an x-ray tube numbered 5100 with two electrodes and a cathode, two connected by coiled insulated wire, on an oak base -- 27.6cm. (10 7/8in.) wide; and a Faraday's ring apparatus, the part-insulated iron ring with brass cross bar stamped W. & J. GEORGE LTD BERMINGHAM , mounted on an oak ply base with two pairs of terminals -- 25.4cm. (10in.) square (4)
a paper-covered induction coil with an ivory plaque PATENT 512 APPS 433 Strand London, coiled copper wire to the ivory-handled brass discharge rods, tension screw, two terminals and an ivory-handled switch/current reverser, mounted on a mahogany plinth base -- 44.2cm. (17 3/8in.) wide; a de la Rive "Aurora" tube to demonstrate rotation of the electrical discharge due to electromagnetic field, with a painted cartouche on the base for F.E. BECKER & C
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