Tuesday

Speedcubing (Rubik's Cube Speed Solving)

Speedcubing is the pastime of trying to solve Rubik's cube puzzles as fast as possible.

If you need futher convincing then watch the 2008 video report below from Budapest, via TheGuardian Video.




Posted by ALCHEssMIST.
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The Black Death: History's Turning Points (Documentary)

Interesting documentary about the European 1347-1351 bubonic plague outbreak 'Black Death'.

Consultant for the documentary is Rosemary Horrox, author of the book entitled 'The Black Death' (1994).




Tags: 1347 - 1351 - Black Death - Bubonic Plague - Documentary -
Posted by ALCHEssMIST - Alchemipedia - Cetacographer - Nirvana - Tags alliance.

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Aeronautics and Cosmonautics Romanian Association (ARCA)

ARCA Interesting Facts:
  • Aeronautics and Cosmonautics Romanian Association (ARCA).
  • Romanian non-profit, non-governmental organization that promotes aerospace projects.
  • They are involved in other space-related activities.
  • ARCA are currently working on the Orizont space vehicle project.
  • The group of scientists are trying to get to the moon via balloon.
  • On November 14th 2009, the ARCA team attempted to launch the Helen space rocket from the Black Sea using the rockoon technique.
Rocket-Balloon Launching Technique:
  • The rocket-balloon concept is known as a "rockoon".
  • The balloon uses heat from the sun to gain altitude after the initial start.
  • Balloons can be used as a carrier to get a rocket above much of the atmosphere.
  • This enables considerable savings on fuel.
  • ARCA are using the rockoon system to try and hoist rocket motors high in the atmosphere attached together by cable - described as "nunchuck staging".
  • In the 1950s the US also explored this technique.
First ARCA Rockoon Attempt (November 14, 2009):
  • Difficulties with balloon inflation because of entangling of the inflation arms.


Video Showing How The Rockoon Technique Works:




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