Hydrostatics and pneumatics / [Dionysius Lardner].

  • Lardner, Dionysius, 1793-1859.
Date:
1831
Catalogue details

Licence: Public Domain Mark

Credit: Hydrostatics and pneumatics / [Dionysius Lardner]. Source: Wellcome Collection.

    16/376
    CHAP. IV. WEIGHT OF AIR. Maxim of the Ancients. — Abhorrence of a Vacuum. —Suction. — Galileo’s Investigations. — Torricelli discovers the atmospheric Pressure. — The Barometer. — Pascal’s Experiment. —Requisites for a good Barometer.— Means of securing them. —Diagonal Barometer. — Wheel Barometer. — Vernier. —Uses of the Barometer. — Variation of atmospheric Pressure. Weather Glass. — Rules in common Use absurd.—Correct Rules. — Mea- surement of Heights.—Pressure on Bodies.—.Why not apparent.— Effect of a Leather Sucker.— How Flies adhere to Ceilings, and Fishes to Rocks. — Breathing. — Common Bellows. — Forge Bellows. —Vent Peg — Tea-Pot. — Kettle. — Ink-Bottles. —Pneumatic Trough. — Guggling. Noise in decanting Wine. - Page 245 CHAP. V. RAREFACTION AND CONDENSATION OF AIR. Exhausting Syringe.—Rate of Exhaustion. — Impossible to produce a per- fect Vacuum. — Mechanical Defects. — The Air Pump. — Barometer Gauge. — Siphon Gauge.—Various Forms of Air Pump.—Piimp with- out Suction Valve. — Experiments with Air Pump.—Bladder burst by atmospheric Pressure. — Bladder burst by Elasticity of Air. — Dried Fruit inflated by fixed Air. — Flaccid Bladder swells by Expansion. — Water raised by elastic Force. — A Pump cannot act in the Absence of atmo- spheric Pressure. —Suction ceases when this Pressure is removed.—The Magdeburg Hemisphere. — Guinea and Feather Experiment. — Cupping. — Effervescing Liquors.—Sparkling of Champagne, &c. — Presence of Air necessary for the Transmission of Sound.—The condensing Syringe. — The Condenser. - - - - 278 CHAP. VI. MACHINES FOR RAISING WATER. The Lifting Pump. — Pump without Friction. — The Suction Pump.—The Forcing Pump. — The same with Air Vessel—The same with a solid Plunger. — Double Forcing Pump. —The Fire Engine. — Siphon. — The Wurtemburg Siphon. - 310 CHAP. VII. THE AIR GUN, AIR BALLOON, AND DIVING BELL.' The Air Gun. — First Attempts at Balloons. — Lana’s Balloon of rarefied Air.—Fire Balloons. — Montgolfier’s Balloon. — First Ascent. — Balloons inflated with Hydrogen. — Parachute. — Blanchard’s Experiment. — Causes of the Efficacy of the Parachute.—Ascent of Gay-Lussac and Biot. — Appearances in the higher Regions of the Atmosphere. —The Diving Bell. . . . . - 333