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Loglan    
An artificial human language designed by
James Cooke Brown in the late 1950s.

Most artificial human languages devised in the 19th and 20th
centuries (e.g. Esperanto) were designed to be easy to learn.
Loglan, however, is unique in that its chief design goal was
to avoid synactic ambiguity -- the kind that arises when
trying to {parse} sentences like "The blind man picked up the
hammer and saw".

Loglan is thus the only human language unambiguously parseable
by a formal grammar (assuming you count Loglan as a human
language; its grammar is not at all like that of any natural
human language).

Most later development on Loglan continued under the name
"Lojban".

The Loglan Institute, Inc. is a non-profit research
corporation.

Loglan is unrelated to the programming languages {Loglan'82}
or {Loglan-88}.

{Halcyon Loglan (http://halcyon.com/loglan/welcome.html)}.

E-mail: loglan@compuserve.com

Telephone: 1 (619) 270 1691.

Address: The Loglan Institute, Inc., 3009 Peters Way, San
Diego, CA, 92117-4313 U.S.A.

["Scientific American", June 1960].

(1999-01-14)


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  • Periodic Table of Elements: Los Alamos National Laboratory
    Isotopes Twenty-nine radioisotopes of protactinium have been discovered Nearly all naturally occurring protactinium is 231 Pa with a half-life of 32,700 years It is an alpha emitter and is formed by the decay of uranium-235, whereas the beta radiating protactinium-234 with a half-life of 6 74 hours is produced as a result of uranium-238 decay
  • Protactinium - Wikipedia
    It is a dense, radioactive, silvery-gray actinide metal which readily reacts with oxygen, water vapor, and inorganic acids It forms various chemical compounds, in which protactinium is usually present in the oxidation state +5, but it can also assume +4 and even +3 or +2 states
  • NYT Connections today – my hints and answers for May 29 (#1083) - MSN
    PROTACTINIUM I have since learned is a dense, highly radioactive, and toxic actinide metal So, it may well smell funky — especially if it was kept in a sealed box with some blue cheese — but
  • Protactinium Element Facts - chemicool. com
    Protactinium is a very rare shiny, silvery, highly radioactive metal that tarnishes slowly in air to the oxide Almost all naturally occurring protactinium is the 231 isotope
  • Supplementary Materials for - Science | AAAS
    Powder XRD data of the spherical cluster (sample 4) overlayed with the powder XRD data of several potential impurities
  • 8. 2. 13: Chemistry of Protoactinium - Chemistry LibreTexts
    Discovered in 1913 by Fajans and Göhring, and then isolated in 1934 by Grosse, protactinium is named from the Greek proto + actinium (parent of actinium) The silvery-white metal is extremely rare, very radioactive and highly poisonous
  • Protactinium - NIST Chemistry WebBook
    The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment
  • Protactinium - Chemistry Encyclopedia - metal, number, name, mass
    There are twenty-four known isotopes of Pa, having mass numbers ranging from 214 to 238, the most stable isotope being 231 Pa Protactinium metal is silvery and relatively nonreactive
  • Protactinium: Element Properties and Uses - samaterials. com
    Protactinium is a rare and highly radioactive element in the series of actinides within the periodic table It possesses several distinctive chemical and physical properties, which make it very valuable for scientific research, especially nuclear physics and studies of radioactive decay
  • Pictures, stories, and facts about the element Protactinium in the . . .
    Protactinium Protactinium occurs in vanishingly small quantities in the natural decay chains of uranium and thorium minerals At most a few atoms at a time exist in a rock like this, and you can't see any of them Scroll down to see examples of Protactinium





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