Mechanics' Magazine, and Register of Inventions and Improvements, Volume 3John Knight D. K. Minor and J. E. Challis., 1834 - Industrial arts |
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Page 59
... light , and the dle - light , the images of objects refracted most opaque insect may thus be seen with from a single magnifier , upon one or two advantage to the naturalist . If the instru . large convex lenses ( of about five inches ...
... light , and the dle - light , the images of objects refracted most opaque insect may thus be seen with from a single magnifier , upon one or two advantage to the naturalist . If the instru . large convex lenses ( of about five inches ...
Page 87
... light to the nature of the object , and ought to adjust the microscope to his own the focus of the magnifier , it is therefore eye , and not depend upon the situation it necessary to view it in various degrees of was placed in by ...
... light to the nature of the object , and ought to adjust the microscope to his own the focus of the magnifier , it is therefore eye , and not depend upon the situation it necessary to view it in various degrees of was placed in by ...
Page 190
... light . The rhízomorpha use . Besides , it has another advantage - it phosphorentia is found in the mines of Hesse , can be furnished at much less cost . and yields light in the dark , but ceases to be “ JAMES GULICK , phosphorescent in ...
... light . The rhízomorpha use . Besides , it has another advantage - it phosphorentia is found in the mines of Hesse , can be furnished at much less cost . and yields light in the dark , but ceases to be “ JAMES GULICK , phosphorescent in ...
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advantage animal appears applied arch become boat body boiler bone called carriage carried cause centre color common consequently considerable considered construction continued course curve cylinder diameter direction distance earth effect employed engine equal experiments fact feet force four give given gold greater half hand head heat horse hour important improvement inches inclined increase invention iron known length less light machine manner means Mechanics ment metal miles moon motion move nature nearly necessary object observed obtained operation opinion pass persons plane practical present pressure principle produce proportion prove quantity receive respect result rise road round seen side sometimes space square steam sufficient supposed surface thing tion turn vessel weight wheel whole