Fact Check: Video Shows A 1957 Nuclear Test In U.S. NOT In Iran -- No Evidence Earthquake ...

Does a video show a nuclear test carried out by the Islamic Revolutionary Guard Corps (IRGC) in Iran? No, that's not true: The video clip shows a nuclear test in the Nevada desert in 1957. The ...
搞笑奇趣谈 on MSN

不可思议的斐索齿轮法，180多年前，科学家是如何计算出光速的?

1849年，法国物理学家斐索仅凭一个齿轮和两面镜子，就测出了光速。 阿尔芒·斐索（Hippolyte Fizeau） 天才构思“斐索齿轮法” 他先是准备了一个电动旋转轮，旋转轮的齿宽和间隙宽度完全相同，然后再把光源放在它的前方，这时光就会透过半透明镜，从齿轮的间隙中穿过并照射到另一面镜子上，反射回来的光线再次穿过齿轮的间隙，最终被半透明镜反射到人眼中。 方法理解了，但斐索又是怎么靠这套装置计算出光 ...
Nature

Use of Interference Methods in the Determination of Stellar Diameters

REFERRING to the article on the work of Prof. Michelson in NATURE of January 2, it is interesting to note that the first suggestion as to the application of interferential methods to the determination ...
Nature

A Brief Outline of the Development of the Theory of Relativity

[Translated by Dr. Robert W. Lawson.] THERE is something attractive in presenting the evolution of a sequence of ideas in as brief a form as possible, and yet with a completeness sufficient to ...
C&EN

High-Density Liquid Water at a Water–Ice Interface

Institute of Low Temperature Science, Hokkaido University, Kita-19, Nishi-8, Kita-ku, Sapporo 060-0819, Japan ...
IEEE

Analysis of relationship between far-field images and piston error of synthetic-aperture ...

Abstract: The technology of detecting and correcting piston error is one of the key technologies for synthetic-aperture telescopes to achieve high resolution. In this ...