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" Describe the gold-leaf electroscope, and state the principle of its action. 6. I grind sulphur in a mortar, and thus electrify it. I place some of the electrified powder on the plate of a gold-leaf electroscope ; the leaves diverge ; why ? since the sulphur... "
Examination Papers for Science Schools and Classes - Page 37
by Great Britain. Education Department. Department of Science and Art - 1869
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The Elements of Magnetism and Electricity

John Charles Buckmaster - Electricity - 1871 - 224 pages
...a mortar, and thus electrify it. I place some of the electrified powder on the plate of a gold-leaf electroscope ; the leaves diverge ; why ? since the...insulator ; what will occur, and why will it occur ? 7. I place a sheet of vulcanized india-rubber on a sheet ot tinfoil, and a second sheet of tinfoil upon...
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Elements of magnetism and electricity

John Angell (science teacher.) - Electricity - 1877 - 254 pages
...mortar, and thus electrify it. * I place some of the electrified powder on the plate of a gold-leaf electroscope; the leaves diverge; why? since the sulphur...insulator; what will occur, and why will it occur? 14. I place a sheet of vulcanized india-rubber on a sheet of tinfoil, and a second sheet of tin-foil...
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Questions and Problems in Elementary Physics, Containing Numerous Practical ...

C. L. Hotze - Physics - 1878 - 184 pages
...in a mortar and thus electrify it. I place some of the electrified powder on the plate of a goldleaf electroscope; the leaves diverge; why? since the sulphur...insulator ; what will occur, and why will it occur ? (T.) 1538. Describe an experiment to prove that free statical electricity shows itself only on the...
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Magnetism & electricity for schools and science classes

George Porter (headmaster, Coleraine model sch.) - Electricity - 1878 - 64 pages
...of the electrified powder on the plate of a gold-leaf electroscope; the leaves diverge; why? since sulphur is an insulator and does not part with its...insulator ; what will occur, and why will it occur? (29,34.) 68. Describe the electrophorus and the mode of charging it. (38.) 64. I stick a bit of sealing-wax...
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Lecture Notes on Physics

Charles Bird (B.A., F.R.A.S.) - 1880 - 206 pages
...electrified body ? 459. Describe the gold leaf electroscope, and state the principle of its action. 460. I grind sulphur in a mortar and thus electrify it....insulator ; what will occur, and why will it occur ? 461. I place a sheet of vulcanized india-rubber on a sheet of tin-foil, and a second sheet of tin-foil...
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Frictional Electricity

Thomas P. Treglohan - Electrostatics - 1886 - 150 pages
...a mortar and thus electrify it. I place some of the electrified powder on the plate of a gold-leaf electroscope ; the leaves diverge ; why ? since the...insulator ; what will occur, and why will it occur ? 4. I place a sheet of vulcanised indiarubber on a sheet of tinfoil, and a second sheet of tinfoil...
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Magnetism and Electricity

Arthur William Poyser - Electricity - 1889 - 264 pages
...a mortar, and thus electrify it. I place some of the electrified powder on the plate of a gold-leaf electroscope. The leaves diverge ; why ? since the...insulator : what will occur, and why will it occur ? 7. Describe the electrophorus and the mode of charging it. 8. Give the theory of the action of the electrophorus....
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Magnetism and Electricity

Arthur William Poyser - Electricity - 1901 - 288 pages
...a mortar, and thus electrify it. I place some of the electrified powder on the plate of a gold-leaf electroscope. The leaves diverge ; why ? since the...remove the powder by means of an insulator : what wil1 occur, and why will it occur ? 7. Describe the electrophorus and the mode of charging it. 8. Give...
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Magnetism and Electricity: Stage I,

Arthur William Poyser - Electricity - 1903 - 398 pages
...a mortar, and thus electrify it. I place some of the electrified powder on the plate of a gold-leaf electroscope. The leaves diverge ; why ? since the...remove the powder by means of an insulator : what wiU occur, and why will it occur ? 7. Describe the electrophorus and the mode of charging it. 8. Give...
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