Scientific recreations in philosophy and mathematics. Including arithmetic, acoustics, electricity, magnetism, optics, pneumatics; together with amusing secrets in various branches of science: the whole calculated, to form an agreeable and improving exercise for the mind / [William Enfield].

  • Enfield, William, 1741-1797.
Date:
1825
Catalogue details

Licence: Public Domain Mark

Credit: Scientific recreations in philosophy and mathematics. Including arithmetic, acoustics, electricity, magnetism, optics, pneumatics; together with amusing secrets in various branches of science: the whole calculated, to form an agreeable and improving exercise for the mind / [William Enfield]. Source: Wellcome Collection.

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    MAGNETISM, eh 7 : : : Page 184. Definitions, . - : ‘ ; 7 ib. Aphorisms, 185 The magnetic wand, 186 The mysterious watch, ib. The magnetic dial, ‘ } ib. The magnetic cards, ; : + 187 e communicative crown, 188 The magnetic table, 4 189 The aman doe : ib. ‘PNEUMAT . 190 Sretaitions, A ib. Aphorisms, : ib. The bottle broke by: air, s 191 The brass hemisphere, 192 | Water boiled by air, ib. The aerial bubbles, ib. The floating stone, 193 _ The vegetable air bubbles, | ib. The mercurial rod, A ib. The mystical bell, ib. ‘The self-moving wheel, 194 The animated figure, ib. The artificial halo, 195 The mercurial shower, ib. The fountain in vacuo, ib. The cemented bladder, 196 Cork heavier than lead, ib. The animated Bacchus, : ib. The artificial balloon, : ib. Experiment with a viper, 197 Experiments with ee ib. OPTICS, 198 Definitions, ib. Three objects discernible only with both eyes, 202 To construct the camera obscura, ‘5 903 The magnifying reflector, : ib. Optical augmentation, 204. To magnify small objects by. means of the sun’ $ rays let into a dark chamber, 5 5 3 : ib. AMUSING SECRETS, 205 To make a ring be suspended by a thread after it has been burnt, ib. To make people in a room have a hideous satan : ib. To form figures in relief on an egg, : ab. To change a colour from white to blue, ‘ ib. To make a red liquor become yellow, blue, black, or purple, ib. © To make pomatum with water and wax, 206 How a body of combustible matter ney be penetrated by fire without being consumed, 5 ib. Apparent transmutation ofiron into copper or silver, ib. Different substances successively precipitated by adding another to the solution, 207 By the mixture of two transparent liquors to produce a blackish liquor—method of making good ink, ; y 209 To produce inflammable and fulminating vapours, ib.