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Rosalind Elsie Franklin (25 July 1920 – 16 April 1958) [1] was a British chemist and X-ray crystallographer whose work was central to the understanding of the molecular structures of DNA (deoxyribonucleic acid), RNA (ribonucleic acid), viruses, coal, and graphite. [2] .
Three Natural Bridges (Chongqing) The Tianlong Bridge. Spanning the Yangshui River, a tributary of the Wu River, the bridges are at the centre of a 20 km 2 (7.7 sq mi) conservation area which also includes: Qinglong Tiankeng (青龙天坑); Shenying Tiankeng (神鹰天坑);
CJK Unified Ideographs is a Unicode block containing the most common CJK ideographs used in modern Chinese, Japanese, Korean and Vietnamese characters. When contrasted with other blocks containing CJK Unified Ideographs, it is also referred to as the Unified Repertoire and Ordering (URO).[3] The block has hundreds of variation sequences ...
Swimming career. Haughey won gold and broke the meet record in the 100-metre freestyle at the World Junior Championships in 2013; she was the first Hong Kong swimmer to medal at the event.
Pearson correlation coefficient. Several sets of ( x , y) points, with the correlation coefficient of x and y for each set. The correlation reflects the strength and direction of a linear relationship (top row), but not the slope of that relationship (middle), nor many aspects of nonlinear relationships (bottom).
In linear algebra, a rotation matrix is a transformation matrix that is used to perform a rotation in Euclidean space. For example, using the convention below, the matrix. rotates points in the xy plane counterclockwise through an angle θ about the origin of a two-dimensional Cartesian coordinate system.
Ronald L. Rowe Jr. is an American former law enforcement officer who has served as the acting director of the United States Secret Service since July 2024. Following intense criticism after the attempted assassination of Donald Trump, Director Kimberly Cheatle resigned, placing Secret Service Deputy Director Rowe in temporary charge of the agency.
