 | 1838 - 1014 pages
...boards, and placed one of them close behind the prism at the windows, so that the light might pass through a small hole made in it for the purpose, and fall on the other board, which he placed at the distance of about twelve feet, having first made a small hole in it also, for some... | |
 | Encyclopaedia - 1845 - 902 pages
...two boards, and placed one of them close behind the prism at the window, so that the light might pass through a small hole, made in it for the purpose,...also, for some of that incident light to pass through. Thon 1 placed another prism behind this second board, so that the light trujected through both the... | |
 | Peter Guthrie Tait - 1900 - 324 pages
...two boards, and placed one of them close behind the prism at the window, so that the light might pass through a small hole, made in it for the purpose,...and fall on the other board, which I placed at about 1 2 feet distance, having first made a small hole in it also for some of that incident light to pass... | |
 | Robert Samuel Heath - 1887 - 384 pages
...small hole, made in it for the purpose, and fall on the other board, which was placed at about twelve feet distance, having first made a small hole in it...some of that incident light to pass through. Then he placed another prism behind this second board, so that the light passing through the two boards... | |
 | Robert Samuel Heath - 1887 - 386 pages
...two boards and placed one of them close behind the prism at the window, so that the light might pass through a small hole, made in it for the purpose, and fall on the other board, which was placed at about twelve feet distance, having first made a small hole in it also for some of that... | |
 | Robert Samuel Heath - 1888 - 264 pages
...two boards, and placed one of them close behind the prism at the window, so that the light might pass through a small hole, made in it for the purpose, and fall on the other board, which was placed at about twelve feet distance, a small hole having first been made in it also for some of... | |
 | Florian Cajori - 1899 - 344 pages
...small hole, made in it for the purpose, and fall on the other board, which I placed at about twelve feet distance, having first made a small hole in it...pass through. Then, I placed another prism behind the second board." On turning the first prism about its axis, the image which fell on the second board... | |
 | Florian Cajori - 1899 - 340 pages
...two boards, and placed one of them close behind the prism at the window, so that the light might pass through a small hole, made in it for the purpose,...and fall on the other board, which I placed at about twelve feet distance, having first made a small hole in it also, for some of that incident light to... | |
 | Florian Cajori - 1899 - 342 pages
...two boards, and placed one of them close behind the prism at the window, so that the light might pass through a small hole, made in it for the purpose,...and fall on the other board, which I placed at about twelve feet distance, having first made a small hole in it also, for some of that incident light to... | |
 | Henry Smith Williams - 1904 - 394 pages
...boards, and, placing one of them close behind the prism at the window, so that the light must pass through a small hole, made in it for the purpose,...and fall on the other board, which I placed at about twelve feet distance, having first made a small hole in it also, for some of the incident light to... | |
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Prisme at the window, so that the light might pass through a small hole, made in it for the purpose, and fall on the other board, which I placed at about 12... 
