Chemical News and Journal of Physical Science, Tom 105Chemical news office., 1912 |
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Strona 1
... measurements of the lines in the ultra - violet spectrum of boron from a sample of boric acid obtained from Merck , and gave the wave - lengths of the three lines as 3451 49 , 2497'79 , and 2496.87 . In 1904 A. Hagenbach and H. Konen ...
... measurements of the lines in the ultra - violet spectrum of boron from a sample of boric acid obtained from Merck , and gave the wave - lengths of the three lines as 3451 49 , 2497'79 , and 2496.87 . In 1904 A. Hagenbach and H. Konen ...
Strona 2
... measured by Dr. Weintraub , which at the room temperature ( 27 ° C. ) had a resistance of 5,620,000 ohms , dropped to 5 ohms at a dull red heat . Another noteworthy property of both the melted and agglomerated boron is extreme hardness ...
... measured by Dr. Weintraub , which at the room temperature ( 27 ° C. ) had a resistance of 5,620,000 ohms , dropped to 5 ohms at a dull red heat . Another noteworthy property of both the melted and agglomerated boron is extreme hardness ...
Strona 3
... measured by the thermometer T4 , placed in the glass vessel F. The tem- perature of the water did not vary more than 0.2 ° C. during the measurement , and the slight error caused thereby can be neglected . The aluminium bar was placed ...
... measured by the thermometer T4 , placed in the glass vessel F. The tem- perature of the water did not vary more than 0.2 ° C. during the measurement , and the slight error caused thereby can be neglected . The aluminium bar was placed ...
Strona 4
... measurements . The determinations were made in the other conditions of the bar were constant . The cold water ... measured by a micrometer . The rod was then placed in position in the water - jacket K , which was well lagged with ...
... measurements . The determinations were made in the other conditions of the bar were constant . The cold water ... measured by a micrometer . The rod was then placed in position in the water - jacket K , which was well lagged with ...
Strona 5
... measurements , and 15 cm . in another series . The results were practically identical , as will be seen from the ... measured was about 2.2 mm . , the maximum error of measurement was 0.13 per cent . The error in the temperature ...
... measurements , and 15 cm . in another series . The results were practically identical , as will be seen from the ... measured was about 2.2 mm . , the maximum error of measurement was 0.13 per cent . The error in the temperature ...
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