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Obsidian is a personal knowledge base and note-taking application that operates on Markdown files. [ 3 ] [ 4 ] [ 5 ] It allows users to make internal links for notes and then to visualize the connections as a graph .
Obsidian was valued in Stone Age cultures because, like flint, it could be fractured to produce sharp blades or arrowheads in a process called knapping. Like all glass and some other naturally occurring rocks, obsidian breaks with a characteristic conchoidal fracture. It was also polished to create early mirrors.
Obsidian hydration dating (OHD) is a geochemical method of determining age in either absolute or relative terms of an artifact made of obsidian.. Obsidian is a volcanic glass that was used by prehistoric people as a raw material in the manufacture of stone tools such as projectile points, knives, or other cutting tools through knapping, or breaking off pieces in a controlled manner, such as ...
Obsidian is a 1997 graphic adventure game developed by Rocket Science Games and published by SegaSoft.It was released for Microsoft Windows and Mac OS.. Based on a game design outline by VP of Development/Creative Director, Bill Davis, and written by Howard Cushnir and Adam Wolff, Obsidian is a first-person 3-D graphical adventure game, with a large puzzle element.
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Obsidian (Todd James Rice) is a superhero published by DC Comics. He first appeared in All-Star Squadron #25 (September 1983), and was created by Roy Thomas and Jerry Ordway. [1] He is the son of Alan Scott and Rose Canton and the twin brother of Jade. According to an Infinity, Inc. letter page, Obsidian was named "Todd" after a friend of Thomas.
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Obsidian projectile point.. Obsidian is a naturally formed volcanic glass that was an important part of the material culture of Pre-Columbian Mesoamerica.Obsidian was a highly integrated part of daily and ritual life, and its widespread and varied use may be a significant contributor to Mesoamerica's lack of metallurgy.