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RF
A vibrant green and beige fabric texture with wavy folds and a smooth, flowing appearance, showcasing its dynamic movement and color contrast.-stock-foto
RF
A dark gray fabric texture featuring a noticeable green stain in the lower right corner, highlighting its rough weave and textured surface.-stock-foto
RM
. Carnegie Institution of Washington publication. 94 STUDIES IN LUMINESCENCE. Fig. 94 gives in graphical form a summary of the results of nine sets of observations upon the decrease in maximum intensity of thermo-lumines- cence with delay in heating. The curve G is from data plotted in Fig. 90. In Fig. 95, which is from the same set of observations, the time of maximum intensity is measured from the beginning of heating in order to exhibit more clearly the shift of the maximum as the result of delay in beginning heating. I A 9 , '  1   ->  V B A  s 1  c 0â ?vr â 100^?? 0 -0 zc â¢10 6-stock-foto
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. Elementary chemical microscopy . Fig. 132. Apparatus for the Determination of Low Melting Points. of a glass box or trough, such as is commonly employed for the spectroscopic examination of liquids, the open end of which is provided with a wedge-shaped piece of rubber, forming a tight stopper. The hot water enters the cell through the glass tube A and escapes at B, the rate of flow being controlled by a stop- cock or screw-clamp. The hot water may conveniently be ob- tained by siphoning it through a small coil of'copper pipe D heated by a Bunsen burner E. Or the heating system devised for pr-stock-foto
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Elektrische und Optische Erscheinungen (Lorentz) 064-stock-foto
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Optics: spectra of various substances. Colour aquatint (?) by R.H. Digeon, ca. 1868.-stock-foto
RM
. 100 Linde. .Splint 0,323 Bache, äusseres Holz 0,288 Aspe, Splint 0,226 Eichenkernholz 0,219 Aspe, Reifbolz ü.196 Fichte, äusseres Holz 0.151 Buche, inneres Holz 0.14b' Fichte, inneres Holz 0,119 Ordnen wir die Hölzer nach dem Verhältniss ihrer ersten Wasser- aufnahme, verglichen mit dem ursprünglichen (Trocken-Miewieht. so erhalten wir Linde. Reifholz Linde, Splint Eichensplint Aspensplint Aspenreifholz Buche, äusseres Fichte, äusseres Holz 0.351 Eichenkernholz 0.309 Fichte, inneres Holz 0,265 Buche, inneres Holz 0.206 Hieraas geht hervor dasa mit Ausnahme des Lindenholzes, bei welchem das R-stock-foto