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An epitome of astronomy, with the new discoveries / including an account of the eídouraníon, or transparent orrery cover

An epitome of astronomy, with the new discoveries / including an account of the eídouraníon, or transparent orrery

Chapter 8: Heads of Mr. Walker, sen.’s Lectures, IN CONDUIT-STREET, HANOVER-SQUARE, Read every Monday, Wednesday, & Friday, during Winter, AT ONE, On an Explanatory Apparatus, The most extensive and elegant. ONE GUINEA THE COURSE.
By William Walker
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About This Book

The work offers a sequence of illustrated lectures using a large transparent orrery to make astronomical principles visible. Early demonstrations isolate the Sun and Earth to explain rotation, axial tilt, and the origins of day, night, and the seasons while zodiacal panels indicate the Earth's path. Adding the Moon clarifies phases, synchronous rotation, and the mechanics of solar and lunar eclipses, reinforced by large telescopic lunar maps. Further scenes treat tidal theory through Earth–Moon mutual motion, planetary orbits and appearances, the formation of constellations, and visual perspectives from different locations, all arranged for clear public demonstration.

Heads of Mr. Walker, sen.’s
Lectures,
IN CONDUIT-STREET, HANOVER-SQUARE,
Read every Monday, Wednesday, & Friday, during Winter,
AT ONE,
On an Explanatory Apparatus,
The most extensive and elegant.
ONE GUINEA THE COURSE.

I. On the general Properties of Matter, Magnetism, &c.

II. On the Laws of Motion, Mechanics, Machines of Agriculture, Mills, Cranes, &c.

III. On the Principles of Chemistry.

IV. On Pneumatics, or the Weight and Spring of the Air, Musical Vibrations, &c.

V. On the Gasses and new Discoveries in the Air.

VI. On the Hydrostatics, or the Motion and Pressure of Water, Canals, Aqueducts, Machines, Ships, &c.

VII. On Electricity, its Laws, Effects, Circuits, Shocks, &c.

VIII. Ditto, negative and positive, Lightning, Thunder, Galvanism, Medical Electricity, &c.

IX. On Optics, Laws of Light, Vision, Lenses, &c.

X. On the Figure and Motions of the Earth.

XI. On the Phases, Eclipses, &c. of the Moon, and on the Tides.

XII. On the Solar System in general, with the new Discoveries.

This Course may be read privately for 50 Guineas, or to General Subscription amounting to 70 Guineas, on application to Mess. Walker, sen. or jun.

Ipswich: printed by Burrell & Bransby.