Geographic - Disaster Risk Reduction Knowledge Service

2017-05-02

Planar vector angle online calculator \(|a|=√[x1^2+y1^2]\) \(|b|=√[x2^2+y2^2]\) \(a \times b=(x1,y1)(x2,y2)=x1x2+y1y2\) \(cos=a \t.......

solar height angle solar azimuth

2017-05-02

Instructions for use This application is often encountered in geography. The function of online calculation [solar altitude ] (/wi.......

centripetal force mass speed radius

2017-05-02

APP description The formula of centripetal force centrifugal force: Centripetal centrifugal force: \(f= \frac {mv^2}{r} \) Radius:.......

2017-05-02

1 to 100,000 new and old topographic map framing number online conversion online calculator Enter a parameter on the 1 to 100,000 .......

2017-05-02

On the equator of the earth, it takes a circle of 40075.04 kilometers around the earth, and @ circle is divided into 360°. And eve.......

2017-05-02

1 to 500,000 new and old topographic map framing number online conversion.......

2017-05-02

Instructions for use An online query tool developed for topographic map framing standards. At present, the query of the new versio.......

2017-05-02

App Description Azimuth angle: The horizontal angle between the clockwise direction and the target direction line from the north d.......

2017-05-02

App Description The earth equator wraps around the earth for a total of 40075.04 kilometers, while @ a circle is divided into 360.......

2017-05-02

App Description Enter a parameter on the 1 to 250,000 new topographic map to reflect the parameter ratio of the new old and new ma.......