A book no mathematician can resist?

October 21st, 2014

What mathematician could resist buying a copy of this book, after reading the bookseller’s description:

Logics of Worlds is the long-awaited sequel to Alain Badiou’s much-heralded masterpiece, Being and Event. Tackling the questions that had been left open by Being and Event, and answering many of his critics in the process, Badiou supplements his pioneering treatment of multiple being with a daring and complex theory of the worlds in which truths and subjects make their mark a?? what he calls a materialist dialectic.

Even many of those many critics will enjoy criticizing both the being and the event in and of this book, once they are made aware that Badiou has supplemented his pioneering treatment of multiple being with a daring and complex theory of the worlds in which truths and subjects make their mark a?? what he calls a materialist dialectic.

N’est pas?

BONUS: They will also, perhaps, enjoy the book (the status of which, says the bookseller, is “currently unavailable”):

The world of logic. Toolkit for primary school teacher. 3rd ed / Mir logiki Metodicheskoe posobie dlya uchitelya nachalnoy shkoly – 3-e izd. – (“Biblioteka uchitelya nachalnoy shkoly “),

Trouser (pants) creases – a metrological examination

October 20th, 2014

If you’re one those people who wonders about accurate trouser-crease measurement in woolen trousers (pants), you should perhaps turn to the Textile Research Journal, March 1966 36: pp. 264-272, where R.C. Landwehr (of the Western Regional Research Lab, Albany, California)
presented an apparatus and procedures to reliably measure wool creases. The ratio of maximum crease height to crease width at half height level was proposed as an objective measure of crease sharpness. See: ‘The Measurement of Wool Trouser Creases


“We have presented evidence to show that the subjective evaluation of creases is directly related to their objective measurements of, maximum height and sharpness, that sharpness is proportional to height, that height varies more in percent than sharpness and that height, therefore, should generally be a sensitive index of overall creases quality.“

An Ig Nobel quiz

October 19th, 2014

A look back to Scossa L’Eredità (the Italian TV quiz program)’s question about the Ig Nobel Prizes:

Scossa L’Eredità 15 ottobre 2013 Laura: Premi Ignobel

BONUS: A look back at that, and several other Iggy TV quizzes

Lots of data and info about paper airplanes, and lots of planes

October 18th, 2014

Lots of data and info about paper airplanes, from Papierfliegerei:

PaperPlaneExcelFrom flight tests and experiments, a lot can be gained qualitative statements about paper airplanes. Paper airplanes cost so much, because empiricism is certainly a possible solution. But you can also calculate pretty good paper airplane. The Excel table on the right is intended to provide a little insight you there. If you are interested, on which formulas are based the results of the table and how they are derived, can you in my book read.

use this Excel table, the simple paper airplane can be quite accurately. In the upper part of the table the necessary inputs for the calculation to be made.

The paper airplane enthusiast behind the site built, and in this video demonstrates, a machine for making and launching a fleet of paper airplanes:

3-D carving (rather than printing), for teeth

October 17th, 2014

The 3-D printing revolution gets most of the attention, but 3-D carving has already added a very real bite to modern healthcare. Dentists (and engineers) are leading the way.

A considerable number of people are strolling the streets, smiling, chewing the fat, and eating lunch — sporting dental crowns made through a process of 3-D scanning and then 3-D milling. The video above shows one dentist proudly showing off his tooth-milling machine.

Why milling (carving slowly, in a process that is literally grinding), rather than printing? Because teeth need to be hard, if they are to survive years of chomping….

So begins another Improbable Innovation nugget, which appears in its entirety on BetaBoston.