2010年11月12日金曜日

秋色 4 (Autumn Colors 4)


 半ば紅葉したカエデ。2010年10月22日、ウォーキング途中で撮影。

The maple in mid-autumn color. The photo was taken in the course of walking exercise on October 22, 2010.

From tweets of yesterday (edited by rephrasing, adding words, etc.)

About Astrophysics

"Wave patterns in Saturn's big ring," Nature Vol. 468, p. 137 (November 10, 2010). —The patterns arise spontaneously owing partly to the high density in the ring.

"Strange matter flow suggests inflation was incomplete," New Scientist (November 9, 2010). —Ref: Y.-Z. Ma et al., "The peculiar velocity field: constraining the tilt of the Universe," arXiv:1010.4276v1 (October 20, 2010).

About Physicists

[From Arjen Dijksman] I'm reading about Kikuchi lines (electron diffraction) and looking for bio about S. Kikuchi but don't find. Is there any in Japanese?

[To Arjen] The bio of S. Kikuchi in Japanese: . It's regrettable that there's no English version. I should be able to help you translate part of the bio on the above page into English, if you would like it.

[From Arjen] Great! Thank you. The bio of Kikuchi should also be available in English indeed. I will see if I can work on en.wiki.

[From Arjen] I created the wiki stub from what I understood with Google translate. Thanks again.

About Physics

"Neutral molecules whirl around." Peter Zieger of the Fritz Haber Institute in Berlin and his colleagues have built a prototype molecular synchrotron for neutral molecules, a key step towards studying low-energy collisions. Nature Vol. 468, p. 136 (November 10, 2010).

"Fundamental constants: Big G revisited." Measuring Newton's constant of gravitation is a difficult task, because gravity is the weakest of all the fundamental forces. An experiment involving two simple pendulums provides a seemingly accurate but surprising value. Nature Vol. 468, p. 181 (November 10, 2010).

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