 | 1775 - 638 páginas
...arms suspended on a steel point resting in a cup, so that it is capable of revolving horizontally. To the extremity of each arm is fastened a thin disc of pith, lamp-blacked on one side so that the black and white faces alternate. The whole is enclosed in a glass... | |
 | 1875 - 1132 páginas
...an anemometer revolve. To the extremity of each arm of straw in the apparatus made by Mr. Crookes, is fastened a thin disc of pith, white on one side and black on the other, the black surfaces of all the discs facing the same way ; the pith discs are each... | |
 | 1875 - 632 páginas
...arms suspended on a steel point resting in a cup, so that it is capable of revolving horizontally. To the extremity of each arm is fastened a thin disc of pith, lamp-blacked on one side so that the black and white faces alternate. The whole is enclosed in a glass... | |
 | 1875 - 806 páginas
...steel point resting in a jewel-cup, so that the arms are able to revolve horizontally upon the centre pivot, in the same manner as the arms of Dr. Robinson's...revolve. To the extremity of each arm is fastened a thin disk of pith, white on one side and lamp-blacked on the other, the black surfaces of all the disks... | |
 | Sir Norman Lockyer - 1875 - 870 páginas
...arms suspended on a steel point resting in a cup so that they are capable of revolving horizontally. To the extremity of each arm is fastened a thin disc of pith, lampblacked on one side, the black and white faces alternating. The whole is enclosed in a glass globe,... | |
 | Radiometer - 1876 - 56 páginas
...hard steel point resting in a cup, so that the arms are able to revolve horizontally upon the centre pivot, in the same manner as the arms of Dr. Robinson's...the extremity of each arm is fastened a thin disc of FIGS. 7 and 8. a. A very fine needle point. b. Two pieces of straw. c. Cup. dddd. Four mica or pith... | |
 | 1876 - 862 páginas
...horizontally upon die centre point, in the name manner as the arms of I)r. Robinson's anemometer reTclre. To the extremity of each arm is fastened a thin disc of pith, white on ono fide and lamp-blacked on the other, tho black surfaces of all tho discs facing tho same way. The... | |
 | 1877 - 608 páginas
...cup (c) blown on to the end of the glass tube e. At the end of each glass arm is fastened a thin disk of pith, white on one side and lampblacked on the other, the black surfaces of all the disks facing the same way. The whole is enclosed in a glass bulb blown on to the end of a wide tube,... | |
 | 1877 - 624 páginas
...cup (c) blown on to the end of the glass tube e. At the end of each glass arm is fastened a thin disk of pith, white on one side and lampblacked on the other, the black surfaces of all the disks facing the same way. The whole is enclosed in a glass bulb blown on to the end of a wide tube.... | |
 | 1877 - 316 páginas
...cup (c) blown on to the end of the glass tube c. At the end of each glass arm is fastened a thin disk of pith, white on one side and lampblacked on the other, the black surfaces of all the disks facing the same way. The whole is enclosed in a glass bulb blown on to the end of a wide tube,... | |
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To the extremity of each arm is fastened a thin disc of pith, white on one side and lamp-blacked on the other, the black surfaces of all the discs facing the same way. 
