. Carnegie Institution of Washington publication. SILICATES. IOI curve is quite different from the preceding, due in part to the higher tem- perature. The absorption band at 6 ^ appears as a depression in the emission spectrum. WOLLASTONITE (CaSi03). (Rod 10 mm. long, tapering from 3 to 4 mm. diameter. Energy supplied, 18 watts. Curves a and b, fig. 68.) This rod was made from a pure transparent glass, supplied by Dr. Allen of the Geophysical Laboratory of the Carnegie Institution of Wash- ington, which became a white crystalline mass on melting in the oxy- hydrogen flame. It was rendered cond
. Carnegie Institution of Washington publication. SILICATES. IOI curve is quite different from the preceding, due in part to the higher tem- perature. The absorption band at 6 ^ appears as a depression in the emission spectrum. WOLLASTONITE (CaSi03). (Rod 10 mm. long, tapering from 3 to 4 mm. diameter. Energy supplied, 18 watts. Curves a and b, fig. 68.) This rod was made from a pure transparent glass, supplied by Dr. Allen of the Geophysical Laboratory of the Carnegie Institution of Wash- ington, which became a white crystalline mass on melting in the oxy- hydrogen flame. It was rendered conducting with difficulty, and could not be heated 2 3 4 5 Fig. 68. — Wollastonite. The silicate band at p is prominent, while a new band appears at p. Curve b gives the emission from the coolest side of the rod, while curve a represents the emission from the hottest side. The latter is an excellent illustration of the rapid increase in intensity with temperature,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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