 | 1847 - 490 Seiten
...is chosen. Melloni, in his investigations on radiant heat, discovered that a peculiar green glass, manufactured in Italy, obstructed nearly all the calorific...that employed by the Italian philosopher. The tint of color is not very different from that of the old crown glass ; and many practical men state that they... | |
 | 1847 - 492 Seiten
...is chosen. Melloni, in his investigations on radiant heat, discovered that a peculiar green glass, manufactured in Italy, obstructed nearly all the calorific...that employed by the Italian philosopher. The tint of color is not very different from that of the old crown glass ; and many practical men state that they... | |
 | Charles Barlow - 1772 - 642 Seiten
...is •Wen. Melloni, in bis investigations on radiant heat, discovered that a peculiar green glass, manufactured in Italy, obstructed nearly all the calorific...rays ; we may, therefore, conclude that the glass ohosen is of a similar character to that employed by the Italian philosopher. The tint of colour is... | |
 | 1847 - 736 Seiten
...the red ray is affected in a small degree, the lower edge of the ordinary red ray being cut offby it. The tint of colour is not very different from that...much better under this kind of glass than under the whitest sheet glass commonly employed.— Gardeners' Chronicle. FLORAL EXHIBITIONS. HORTICULTURAL SOCIETY,... | |
 | 1847 - 490 Seiten
...is chosen. Melloni, in his investigations on radiant heat, discovered that a peculiar green glass, manufactured in Italy, obstructed nearly all the calorific...that employed by the Italian philosopher. The tint of color is not very different from that of the old crown glass ; and many practical men state that they... | |
 | British Association for the Advancement of Science - 1848 - 784 Seiten
...glass is chosen. Mellon!, in his investigations on radiant heat, discovered that a peculiar green glass manufactured in Italy obstructed nearly all the calorific...their plants flourish much better under this kind i glass than under the white sheet glass which is now so commonly employed. It is satisfactory thus... | |
 | Charles W. Vincent, James Mason - 1848 - 400 Seiten
...glass i3 chosen. Melloni, in Ms investigations on radiant heat, discovered that a peculiar green glass, manufactured in Italy, obstructed nearly all the calorific...glass ; and many practical men state, that they find thcir plants flourish much better mulct this kind of glass than under the white sheet glass, which... | |
 | John Timbs - 1856 - 304 Seiten
...which is so transparent as scarcely to intercept any light, while it keeps out much of the heat. This tint of colour is not very different from that of the old crown-glass ; and many practical men state, that they find their plants flourish much better under... | |
 | Robert B. Leuchars - 1881 - 390 Seiten
...glass is chosen. Melloni, in his investigations on radian; heat' discovered that a peculiar green glass manufactured in Italy, obstructed nearly all the calorific...employed' by the Italian philosopher. The tint of color is not very different from that of the old crown glass, and many practical men state, that they... | |
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Melloni, in his investigations on radiant heat, discovered that a peculiar green glass, manufactured in Italy, obstructed nearly all the calorific rays; we may, therefore, conclude that the glass chosen is of a similar character to that employed by the... 