The school of arts; or, an introduction to useful knowledge, being a compilation of real experiments and improvements, in several pleasing branches of science / [John Imison].

  • John Imison
Date:
[1786?]
Catalogue details

Licence: Public Domain Mark

Credit: The school of arts; or, an introduction to useful knowledge, being a compilation of real experiments and improvements, in several pleasing branches of science / [John Imison]. Source: Wellcome Collection.

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    bit fou of them bave proved by aétual experiment what they bave afferted'; and indeed this is z.0t to be wondered at, when it is knotun that experiments are attended with much éxpence. And although I have ufed my beft endeavours, yet I will not affert but that better methods in feveral things may be difcovered: néverthelefs the reader’ may rely that. the facts I bave advanced will bear ihe teft of any CNGUITY. . The particular branches of feience which I have endeavoured to explain, are thofe of the Mechanica] powers, Eleéiricity, Pneumatics, Hydroftatics and Hydraulics, Optics, Afironomy ; Clock-making, the nature, ufe, and confiruttion of the Barometer, and the confirustion of optical ana many philofophical In- firuments; all which I flatter my felf, fiudents in thefe branches will find to be exatt, whether they are confult- ed with a view to theory or prattice. A knowledge of ibe mechanic powers is now become a part of polite education, and their utility is maui- fefted by daily experience 3 ; . therefore fuch defini- tions, poflulates, and axioms dre premifed as were thought ueceffary to form a right conception of thé principles, and to form a juft idea of their applica~ tion on aay particular occafion; and as my reafoning on .thefe fubjeths has been general, fo no regard has been paid Lo the weicht of the beam or lever; it be: ine
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