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" I shall briefly describe in the following order: 1. The flash of the lens revolving slowly was very much larger than that of the rapidly revolving series; and this decreasing of size in the luminous object presented to the eye, became more marked as the... "
Railway Locomotives and Cars - Σελίδα 46
1843
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The Franklin Journal, and American Mechanics' Magazine

1842
...distant view. Several members of the Royal Society witnessed the results of the experiments, which I shall briefly describe in the following order: 1....eye, became more marked as the rate of revolution was accelerated, so that at the velocity of eight or ten flashes in a second, the naked eye could hardly...

The Edinburgh New Philosophical Journal, Τόμος 32

1842
...the distant view. Several members of the Royal Society witnessed the results of the experiments which I shall briefly describe in the following order :— 1. The flash of the lens revolving slowly y much larger than that of the rapidly revolving serie crease of size in the luminous object prese...

The Year-book of Facts in Science and Art

1843
...his conclusions by comparing the lights from a distance of 14 miles; and he describes them briefly in the following order : — " 1. The flash of the...than that of the rapidly revolving series ; and this decrease of size in the luminous object presented to the eye, became more marked as the rate of revolution...

The Year-book of Facts in Science and Art

Charles W. Vincent, James Mason - 1843
...inferior to that of the bright flashes which alternate with the dark intervals in revolving lights.* " 1. The flash of the lens revolving slowly was very...than that of the rapidly revolving series ; and this decrease of size in the luminous object presented to the eye, became more marked as the rate of revolution...

A Rudimentary Treatise on the History, Construction, and Illumination of ...

Alan Stevenson - 1850 - 204 σελίδες
...notice the more important results which were obtained by the distant view. They are as follow :— 1. The flash of the lens revolving slowly was very...than that of the rapidly revolving series ; and this decrease of size in the luminous object presented to the eye became more marked as the rate of revolution...

A Rudimentary Treatise on the History, Construction, and Illumination of ...

Alan Stevenson - 1850 - 204 σελίδες
...briefly notice the more important results which were obtained by the distant view. They are as follow:— 1. The flash of the lens revolving slowly was very...than that of the rapidly revolving series: and this decrease of size in the luminous object presented to the eye became more marked as the rate of revolution...

A Rudimentary Treatise on the History, Construction and Illumination of ...

Alan Stevenson - 1850 - 204 σελίδες
...briefly notice the more important results which were obtained by the distant view. They are as follow:— 1. The flash of the lens revolving slowly was very...than that of the rapidly revolving series; and this decrease of size in the luminous object presented to the eye became more marked as the rate of revolution...

A Rudimentary Treatise on the History, Construction and Illumination of ...

Alan Stevenson - 1850 - 204 σελίδες
...revolving slowly was very -anuch larger than that of the rapidly revolving series ; a.nd this decrease of size in the luminous object presented to the eye became more marked as the rate of ^«•evolution was accelerated, so that, at the velocity of ^ight or ten flashes in a second, the...

Congressional Serial Set

1851
...cause a continuous impression, could only have been satisfactorily answered by an appeal to experiment. 1. The flash of the lens revolving slowly was very much larger than that of the rapidly revolving smev, «\wi VVns decrease of size in the luminous object presented to t\ie e^t \>«.WLm<i YNCKt\uft«£&....




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