From personal notes to journaling, knowledge bases, and project management, Obsidian gives you the tools to come up with ideas and organize them. Create connections between your notes. Link anything and everything — ideas, people, places, books, and beyond. Invent your own personal Wikipedia.

Obsidian (/ əbˈsɪdi.ən, ɒb -/ əb-SID-ee-ən ob-) [5] is a naturally occurring volcanic glass formed when lava extruded from a volcano cools rapidly with minimal crystal growth. It is an igneous rock. [6] . Produced from felsic lava, obsidian is rich in the lighter elements such as silicon, oxygen, aluminium, sodium, and potassium.

Obsidian is a personal knowledge base and note-taking application that operates on markdown files. [3][4][5] Obsidian allows users to make internal links for notes and then to visualize the connections as a graph. [6][7] Obsidian is designed to help users organize and structure their thoughts and knowledge in a flexible, non-linear way. [8]

Nov 8, 2023 · Obsidian is an extrusive igneous rock. It is occurring as a natural glass formed by the rapid cooling of viscous lava from volcanoes. Result of this formed, glass occupies more than 80 % and that have seeming conchoidal fracture and vitreous luster. It usually colours dark, black, grey-black to grey.

Obsidian is a naturally occurring volcanic glass formed when felsic lava cools rapidly without crystallizing. Its smooth glassy texture and sharp edges have made it highly valued by ancient cultures for tools and weapons, and today it remains popular for decorative objects and jewelry.

Mar 5, 2025 · There are different types of obsidian, and they each have unique colors, patterns, and properties. In this article, we’ll explore the different types of obsidian and show you how different they are from one another despite being the same rock. Here, you’ll see and understand that each of these has its own story.

Obsidian is an igneous rock that forms when molten rock material cools so rapidly that atoms are unable to arrange themselves into a crystalline structure. It is an amorphous material known as a " mineraloid." The result is a volcanic glass with a smooth uniform texture that breaks with a conchoidal fracture (see photo). Where Does Obsidian Form?

5 days ago · Obsidian Solved My Journaling Woes and Gave Me a New Home for All My Writing Obsidian is a markdown editor that gives you the option to keep all your files local or to pay for its syncing service. One of my favorite features of Obsidian is that you can store your files "locally" in iCloud or Google Drive, having them sync to any device or ...

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Feb 21, 2025 · obsidian, igneous rock occurring as a natural glass formed by the rapid cooling of viscous lava from volcanoes. Obsidian is extremely rich in silica (about 65 to 80 percent), is low in water , and has a chemical composition similar to rhyolite .