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"The writing is clicking away in my head and piling up, and unless I get it on paper somehow it's going to create uncomfortable pressure in my skull."
- Isaac Asimov

Alohydrolium  
  The lightest metal.  

Moreover, it was made of Alohydrolium, which is the lightest of all metals, being one-eighth the weight of aluminum...

(Alohydrolim is a magnetic metal)...

From Ralph 124c 41 +, by Hugo Gernsback.
Published by Modern Electrics in 1911
Additional resources -

Compare to lux from The Black Star Passes (1930) by John W. Campbell, helio-beryllium from Out Around Rigel (1931) by Robert H. Wilson, sodaluminum from Exiles of the Moon (1931) by Nat Schachner (w. AL Zagat) and harbenite from Tarzan at the Earth's Core (1929) by Edgar Rice Burroughs. And don't forget nothing from It was Nothing - Really! (1969) by Theodore Sturgeon.

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Additional resources:
  More Ideas and Technology from Ralph 124c 41 +
  More Ideas and Technology by Hugo Gernsback
  Tech news articles related to Ralph 124c 41 +
  Tech news articles related to works by Hugo Gernsback

Alohydrolium-related news articles:
  - Reconfigured Graphene 10X Strong, 5 Percent Dense, As Steel

Articles related to Material
Tiny Mining - Extract Precious Industrial Minerals From Your Own Body
Polyaramide Is Stronger Than Steel, Light As Plastic
Trinitite, Pentagrams And Isaac Asimov
RUSSE Self-Healing Plastic Works Underwater

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