 Transit of Venus made at Greenwich, the following facts appear : — 1. It requires considerable experience for an observer to appreciate all the definite changes of appearance which occur. 2. When two observers describe a particular phase which they...  The Transit of Venus: By George Forbes - Page 52by George Forbes - 1874 - 99 pagesFull view - About this book
 | Sir Norman Lockyer - Electronic journals - 1874 - 562 pages
...caught in the actual observation to the true time of contact. From observations with the Model Transit of Venus made at Greenwich, the following facts appear...fraction of a second. 3. The successive phases of an ingress or egress appear to follow each other sometimes rapidly, at other times gradually ; so that... | |
 | Sir Norman Lockyer - Electronic journals - 1874 - 562 pages
...caught in the actual observation to the true time of contact. From observations with the Model Transit of Venus made at Greenwich, the following facts appear...fraction of a second. 3. The successive phases of an ingress or egress appear to follow each other sometimes rapidly, at other times gradually ; so that... | |
 | Richard Anthony Proctor - 1874 - 348 pages
...from the more marked peculiarities observed at Washington (where I studied the phenomena myself) : — 1. It requires considerable experience for an observer...fraction of a second. 3. The successive phases of an ingress or egress appear to follow each other sometimes rapidly, at other times gradually ; so that... | |
 | Richard Anthony Proctor - Venus (Planet) - 1874 - 358 pages
...the more marked peculiarities observed at Washington (where I studied the phenomena myself) : — « 1. It requires considerable experience for an observer...generally accordant within a fraction of a second. S. The successive phases of an ingress or egress appear to follow each other sometimes rapidly, at... | |
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