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Over 20,000 years before World of Warcraft, the ancient ancestors of modern dragons, known simply as "proto-dragons", made a deal with a race of godlike beings known as the Titans, who empowered them with magic to transform them into the modern dragons. The dragons are divided into five dragonflights, distinct organizations each led by a ...
Epiasterism, such as that seen in sapphire and most other gems, is the result of a reflection of light on parallel arranged inclusions inside the gemstone. Diasterism, such as that seen in rose quartz, is the result of light transmitted through the stone. In order to see this effect, the stone must be illuminated from behind.
In 2001, Pelgrane Press published a licensed role-playing game based on Vance's setting. To provide supplementary material for the game, Pelgrane published the first issue of The Excellent Prismatic Spray in December 2000. Two issues followed in 2001, a double issue in 2003, Number 6 in 2004, and after a four-year hiatus, another double issue ...
An accretionary prism or accretionary wedge is formed from sediments that are accreted onto the non-subducting tectonic plate at a convergent plate boundary.Most of the material in the accretionary wedge consists of marine sediments scraped off from the downgoing slab of oceanic crust but in some cases includes the erosional products of volcanic island arcs formed on the overriding plate.
The four parameters of classic DH convention are shown in red text, which are θ i, d i, a i, α i. With those four parameters, we can translate the coordinates from O i–1 X i–1 Y i–1 Z i–1 to O i X i Y i Z i. The following four transformation parameters are known as D–H parameters: [4] d: offset along previous z to the common normal