Obsidian

Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock.

It is produced when felsic lava extruded from a volcano cools rapidly with minimum crystal growth. Obsidian is commonly found within the margins of rhyolitic lava flows known as obsidian flows, where the chemical composition (high silica content) induces a high viscosity and polymerization degree of the lava. The inhibition of atomic diffusion through this highly viscous and polymerized lava explains the lack of crystal growth. Obsidian is hard and brittle; it therefore fractures with very sharp edges, which were used in the past in cutting and piercing tools, and it has been used experimentally as surgical scalpel blades.

Origin and properties

The translation into English of Natural History written by the elder Pliny of Rome shows a few sentences on the subject of a volcanic glass called Obsian, so named from its resemblance to a stone (obsiānus lapis) found in Ethiopia by Obsius, a Roman explorer.

List of Beast Wars and Beast Machines characters

This is a list of characters from the animated television series Beast Wars and the follow-up series Beast Machines. The shows are part of the Transformers franchise, based around alien robots transforming into animals and vehicles.

Maximals

McDonald's toy intended as a Transmetal version of Blackarachnia was released, but never appeared in any storyline.

Predacons

Vehicons

Non-aligned characters

Characters from the original series in the 80s

Most of these characters can be seen lying around the Ark in stasis lock.

References

Obsidian (1986 video game)

Obsidian is an action-adventure computer game for the Amstrad CPC personal computer published by Artic Computing in 1986. The game is set on the titular space station located within the centre of an asteroid, which is out of control and drifting towards a black hole. The player must guide an astronaut with a jet pack around the station and re-activate its engine shields to prevent the Obsidian's destruction. This involves collecting items and using them to solve puzzles, while avoiding the Obsidian's reactivated security systems.

Obsidian is the first game that was developed by Revolution Software co-founder Tony Warriner, who was a school pupil at the time. Due to concentrating on Obsidian's development rather than revising he failed all of his exams. The game received a positive response from journalists, it was praised for the quality of its graphics, reviewers held mixed views on the game's ability to maintain player interest. The jet pack was criticized for being too sensitive when responding to the player's movement inputs.