The New Encyclopaedia Britannica, Volume 9 |
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Page 476
Comparison-arc spectra, each taken with the negative electrode of graphite or
copper containing a small known amount of a pure element, are then compared
with the spectra of the unknown material. If the operating characteristics of each
of ...
Comparison-arc spectra, each taken with the negative electrode of graphite or
copper containing a small known amount of a pure element, are then compared
with the spectra of the unknown material. If the operating characteristics of each
of ...
Page 787
Except for oldhamite, which is known chiefly from meteorites, all occur as ore
minerals formed at depth in the earth's crust. Sphalerite group. Four minerals:
sphalerite, ZnS, metacinnabar, HgS; tiemannite, HgSe; and coloradoite, HgTe,
belong ...
Except for oldhamite, which is known chiefly from meteorites, all occur as ore
minerals formed at depth in the earth's crust. Sphalerite group. Four minerals:
sphalerite, ZnS, metacinnabar, HgS; tiemannite, HgSe; and coloradoite, HgTe,
belong ...
Page 988
been retained, including the costumes worn by both men and women and such
ancient festivals as the New Year celebration of the tillers of the land, known as
Navrüz, which takes place on March 21, the period of the vernal equinox. A
festival ...
been retained, including the costumes worn by both men and women and such
ancient festivals as the New Year celebration of the tillers of the land, known as
Navrüz, which takes place on March 21, the period of the vernal equinox. A
festival ...
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