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Due to the Coriolis force, low-pressure systems in the Northern hemisphere, like Typhoon Nanmadol (left), rotate counterclockwise, and in the Southern hemisphere, low-pressure systems like Cyclone Darian (right) rotate clockwise. Schematic representation of flow around a low-pressure area in the Northern Hemisphere. The Rossby number is low, so ...
Rotation matrix. 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.
England women's captain Leah Williamson (left) defends for Arsenal. In the sport of association football, a defender is an outfield player whose primary role is to stop attacks during the game and prevent the opposition from scoring. Defenders fall into four main categories: centre-backs, full-backs, sweepers, and wing-backs.
Google Maps' location tracking is regarded by some as a threat to users' privacy, with Dylan Tweney of VentureBeat writing in August 2014 that "Google is probably logging your location, step by step, via Google Maps", and linked users to Google's location history map, which "lets you see the path you've traced for any given day that your ...
LW. CF. The most common positions used in association football. Teams must always have a goalkeeper, but the remaining 10 players may be arranged in any combination. In the sport of association football, each of the 11 players on a team is assigned to a particular position on the field of play. A team is made up of one goalkeeper and ten ...
PARIS — Playing in an openly hostile environment, facing an opponent both faster and stronger, the United States men’s national team couldn’t run with Morocco, giving up one first-half goal ...
Spinning dancer. The Spinning Dancer, also known as the Silhouette Illusion, is a kinetic, bistable, animated optical illusion originally distributed as a GIF animation showing a silhouette of a pirouetting female dancer. The illusion, created in 2003 by Japanese web designer Nobuyuki Kayahara, [ 1][ 2] involves the apparent direction of motion ...
Rotation of an object in two dimensions around a point O. Rotation in mathematics is a concept originating in geometry. Any rotation is a motion of a certain space that preserves at least one point. It can describe, for example, the motion of a rigid body around a fixed point. Rotation can have a sign (as in the sign of an angle ): a clockwise ...