Well's natural philosophy : for the use of schools, academies and privte students, introducing the latest results of scientific discovery and research ; arranged with special reference to the practical application of physical science to the arts and the experiences of everyday life ; with three hundred and seventy-five engravings (1873)
Wells, David A · New York : Ivison, Blakeman, Taylor and Co. · leaf 373
ens,and B the magnifying lens. The objects tobe magnified are placed between the lenses A and B. In consequence ofthe superior illumination of the object by the rays of the sun, it will bear tobe magnified much more highly than with the lantern. Hence this form ofmicroscope is often employed to… … CHAPTER XV. ELECTRICITY. ■What is Eiec 730. Electricity is one of those subtletricity? agents without weight, or form, that appear tobe difFused through all nature, existing in all substanceswithout aflecting their volume or their temperature, orgiving any indication of its presence when in a…
Physics · Science · Technology
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