 | 1803 - عدد الصفحات: 688
...mirrors wr re placed at thccUftance of about twenty-five yard« one from the other, in ordei to deteimine whether the time of the propagation of the radiant heat, from one focus to the other, could b» appreciated. A heated, but not luminous, ball, was fufpended at one of the foci, before which a... | |
 | 1802 - عدد الصفحات: 542
...that inftant The two mirrors were placed at the diftance of about twenty-five yards from one another, in order to determine -whether the time of the propagation...ball, was fufpended at one of the foci, before which a fcreen was placed. At the inilant that this obftacle was removed, the fluid in the thermometer, . which... | |
 | Samuel Latham Mitchill - 1803 - عدد الصفحات: 508
...heat, stopped that instant. The two mirrors were placed at the distance of about twenty-five yard* one from the other, in order to determine whether the time of the propagation of the radiant hear, from one focus to the other, could be appreciated. A heated, but not luminous ball, xvas suspended... | |
 | 1802 - عدد الصفحات: 680
...two mirrors were placed at the diflance of about twenty-five yards one from the other, in order tQ determine whether the time of the propagation of the...from one focus to the other, could be appreciated. A healed, but noc luminous ball, was fufpended at one of the foci, before which a fereen was placed.... | |
 | 1803 - عدد الصفحات: 696
...heat, ftopped that inftant. The two mirrors were placed at thediltance of abuut twenty-five yard» one from the other, in order to determine whether...the radiant heat, from one focus to the other, could bt appreciated. A heated, but n-it luminous, ball, was fufpended at one of, t he loci, before which... | |
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The two mirrors were placed at thediltance of about twenty- five yards one from the other, in order to determine whether the time of the propagation of the radiant heat, from one focus to the other, could be appreciated. A heated, but not luminous, ball,... 