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In some cases, the elongation of a crystal may be in the direction of the orthogonal axis, whose position is determined by the plane of symmetry. This crystal of the silicate mineral, Epidote, shows an example of this.

Elongation in the Direction of the Orthogonal Axis

In some cases, the elongation of a crystal may be in the direction of the orthogonal axis, whose position…

"When the current is passed through the melted hydroxide, the sodium and the hydrogen appear at the cathode and the oxygen appears at the anode." -Brownlee 1907

Preparation of Sodium and Potassium

"When the current is passed through the melted hydroxide, the sodium and the hydrogen appear at the…