The Boston Journal of Philosophy and the Arts, 1-3권Cummings, Hilliard, & Company, 1824 |
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107 페이지
... glass , one of which is about a line and a half in diameter , and from this runs a slight groove , excavated out of the felspar portion of the stone , and in which there are small globules of black glass , an effect which seems to ...
... glass , one of which is about a line and a half in diameter , and from this runs a slight groove , excavated out of the felspar portion of the stone , and in which there are small globules of black glass , an effect which seems to ...
126 페이지
... glass , at the distance of th of an inch . Each of these lines he found to consist of two or more finer lines , at the distance of somewhat more thanth of that of the adjacent lines . Dr Young ascribes these colours to the interference ...
... glass , at the distance of th of an inch . Each of these lines he found to consist of two or more finer lines , at the distance of somewhat more thanth of that of the adjacent lines . Dr Young ascribes these colours to the interference ...
127 페이지
... glass so minute as the * Dr Brewster also succeeded in communicating the colours from one piece of wax to another piece of wax , and from this second piece to a third piece . By a little precaution , a sunk impression may , upon the ...
... glass so minute as the * Dr Brewster also succeeded in communicating the colours from one piece of wax to another piece of wax , and from this second piece to a third piece . By a little precaution , a sunk impression may , upon the ...
128 페이지
... glass . In sharp lights , however , and particularly in that of the sun , the colours shine with extraordinary brilliancy , and the play of tints which accompany every luminous image , can only be equalled by their matchless exhibition ...
... glass . In sharp lights , however , and particularly in that of the sun , the colours shine with extraordinary brilliancy , and the play of tints which accompany every luminous image , can only be equalled by their matchless exhibition ...
134 페이지
... glass be moistened with this solution , and then heated by a spirit - lamp and the blow - pipe , the platina is reduced , and forms a metal- lic coating on the glass . In analysing the alloy of steel and silver , it is to be acted on by ...
... glass be moistened with this solution , and then heated by a spirit - lamp and the blow - pipe , the platina is reduced , and forms a metal- lic coating on the glass . In analysing the alloy of steel and silver , it is to be acted on by ...
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