Wikipedia:Version 1.0 Editorial Team/Physics articles by quality/12

Chirality is a Lorentz invariant quantity. The spin projection is Helicity. For massless particles these are the same. But the point is that, for massive particles, helicity depends on the frame of reference, but chirality does not. Unfortunately, chirality is a very abstract concept, and I haven't got an intuitive explanation for it. To re-iterate: it is not the spin projection on the direction of motion, but co-incides with this (only) for the case of massless particles. (edit comment)

Born2flie: Recommend that an actual article called contra-rotating rotors or Dual main rotors be created and that Tandem rotors and this article be merged into it. --00:38, 8 January 2007 (UTC) (edit comment)

In my opinion, this article should be rated of Minor importance, as Constantin Carathéodory's discoveries, while significant, weren't groundbreaking.

Rather than be a reflection of the significance of his work, interest in Carathéodory stems from a combination of

1) his cosmopolitan background and interests, which, even for a european academic, were unusual in his time
2) the value of his textbooks, which were clearly written and took an unconventional approach
3) his reputation as a "renaissance man", unusually well educated in philosophy, history, etc.
4) his inititiatives in establishing educational institutions.

The tone of the article is one of uncritical admiration and, in fact, I think, this is one of the few times where I have felt that appropriate in an encyclopedia article

--Philopedia 16:22, 22 March 2007 (UTC) (edit comment)

May I suggest the follwing link is a possible alternative: http://everything2.com/index.pl?node_id=560692 (edit comment)

The article could need an expansion on diffusion in biological systems. The current diffusion across biological membranes section is just a list of bullet points. - tameeria 17:59, 18 February 2007 (UTC) (edit comment)