 A glass plate three millimeters thick was fixed close to the bolometer, between it and the mirror, so that the radiation examined was thereby limited to wave-lengths less than about 3*1.  Lick Observatory Bulletins - Page 16by Lick Observatory - 1910Full view - About this book
 | Astronomical Society of the Pacific - 1907 - 686 pages
...telescope was attached to the mirror frame so that the observer might point toward any desired object. In the focus of the mirror was placed the bolometer. A glass plate 3mm thick was fixed close to the bolometer, between it and the mirror, so that the radiation examined... | |
 | Astronomical Society of the Pacific - 1908 - 370 pages
...telescope was attached to the mirror frame so that the observer might point toward any desired object. In the focus of the mirror was placed the bolometer. A glass plate 3mm thick was fixed close to the bolometer, between it and the mirror, so that the radiation examined... | |
 | 1910 - 692 pages
...toward any desired object. In the focus of the mirror was placed the bolometer. A glass plate three millimeters thick was fixed close to the bolometer,...that the radiation examined was thereby limited to wave-lengths less than about 3*1. This device prevented any exchange of rays of long wave-lengths between... | |
 | 1910 - 694 pages
...attached to the mirror frame, so that the observer might point the mirror toward any desired object. In the focus of the mirror was placed the bolometer. A glass plate three millimeters thick was fixed close to the bolometer, between it and the mirror, so that the radiation... | |
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