Peckeliih and Washington, obtaining for the epoch of ininimum 1878"9. The variations in m~tgnetic declination at Milan, Vienna, Prague, Munich and Christiania indic tte the minimum epoch ]878"5. Both results agree in pointing to an epoch of 11"7 years.~Compt. Read. C.
New spectral rays in samarskite
โ Scribed by C.
- Publisher
- Elsevier Science
- Year
- 1879
- Tongue
- English
- Weight
- 58 KB
- Volume
- 107
- Category
- Article
- ISSN
- 0016-0032
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โฆ Synopsis
has experimented in a shaft with a depth of 380 metres [415"57 yds.] upon the conlpression of gases by a mercurial column. He reports three sets of experiments upon nitrogen : the first was extended to 208, the second to 330 and the third to 430 atmospheres. The results ot these three series are remarkably uniform and the curve which represents them is perfectly regular. Under the pressure of 430 atmospheres the volume of the gas is nearly a quarter greater than is indicated by Marriotte's law, which corresponds to a difference of nearly a hundred atn,ospheres.--Compt~ Rendus.
C.
๐ SIMILAR VOLUMES
An n ร n ray pattern matrix S is said to be spectrally arbitrary if for every monic nth degree polynomial f (ฮป) with coefficients from C, there is a complex matrix in the ray pattern class of S such that its characteristic polynomial is f (ฮป). In this article we give new classes of spectrally arbitr