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How Iron - Cold Iron - can be master of men all." He took the Wine and blessed it. He blessed and brake the Bread With His own Hands He served Them, and presently He said: " See! These Hands they pierced with nails, outside My city wall, Show Iron - Cold Iron - to be master of men all. " " Wounds are for the desperate, blows are for the strong.
Being denser than the lithophiles, hence sinking lower into the crust at the time of its solidification, the chalcophiles tend to be less abundant than the lithophiles. [122] In contrast, gold is a siderophile, or iron-loving element. It does not readily form compounds with either oxygen or sulfur. [123]
In contrast, gold is a siderophile, or iron-loving element. It does not readily form compounds with either oxygen or sulfur. [ 104 ] At the time of the Earth's formation , and as the most noble (inert) of metals, gold sank into the core due to its tendency to form high-density metallic alloys.
Iron(II) complexes are less stable than iron(III) complexes but the preference for O-donor ligands is less marked, so that for example [Fe(NH 3) 6] 2+ is known while [Fe(NH 3) 6] 3+ is not. They have a tendency to be oxidized to iron(III) but this can be moderated by low pH and the specific ligands used. [72]
By repeating the same with both gold and silver one finds exactly how much heavier than water gold, silver and the compound were. This treatise was extensively examined by Eilhard Wiedemann who believed that Khayyam's solution was more accurate and sophisticated than that of Khazini and Al-Nayrizi who also dealt with the subject elsewhere. [8]: 198
There are more questions than answers in this new type of epic, where "an agnostic irony can easily find a place" while "the unbiased reader would be forced to recognize as concerned with the profoundest issues which confront humanity". [10] He concludes that if the poem is to be labeled a national epic, it is a "highly idiosyncratic" one. [9]
In terms of algebraic number theory, the metallic means are exactly the real quadratic integers that are greater than and have as their norm. The defining equation x 2 − n x − 1 = 0 {\displaystyle x^{2}-nx-1=0} of the n th metallic mean is the characteristic equation of a linear recurrence relation of the form x k = n x k − 1 + x k − 2 ...
An example of "beauty in method"—a simple and elegant visual descriptor of the Pythagorean theorem.. Mathematical beauty is the aesthetic pleasure derived from the abstractness, purity, simplicity, depth or orderliness of mathematics.