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Tetrahedron. In geometry, a tetrahedron (pl.: tetrahedra or tetrahedrons), also known as a triangular pyramid, is a polyhedron composed of four triangular faces, six straight edges, and four vertices. The tetrahedron is the simplest of all the ordinary convex polyhedra.
Platonic solid. In geometry, a Platonic solid is a convex, regular polyhedron in three-dimensional Euclidean space. Being a regular polyhedron means that the faces are congruent (identical in shape and size) regular polygons (all angles congruent and all edges congruent), and the same number of faces meet at each vertex.
The English Electric Lightning is a British fighter aircraft that served as an interceptor during the 1960s, the 1970s and into the late 1980s. It is capable of a top speed of above Mach 2. The Lightning was designed, developed, and manufactured by English Electric. After EE merged with other aircraft manufacturers to form the British Aircraft ...
There are three temperature sensors (thermocouples) on a 1 m (3.3 ft) vertical mast (shown in its stowed position) at heights of approximately 250, 500 and 1,000 mm (9.8, 19.7 and 39.4 in) above the lander deck. The sensors were referenced to a measurement of absolute temperature at the base of the mast.
August 28, 2024 at 4:35 AM. A 4-year-old boy accidentally smashed a Bronze Age jar at an archeological museum in Haifa, Israel. The ancient artifact, which experts say was at least 3,500 years old ...
Heather Graham wears a sparkly black jumpsuit. Heather Graham is channeling her Boogie Nights era! On Thursday, Sept. 12, the actress, 54, shared a snap of herself looking disco-ready in a sexy ...
The more stable Tc 6 and Tc 8 clusters have prism shapes where vertical pairs of Tc atoms are connected by triple bonds and the planar atoms by single bonds. Every technetium atom makes six bonds, and the remaining valence electrons can be saturated by one axial and two bridging ligand halogen atoms such as chlorine or bromine .
In the video, Gunnar, Sullivan's 11-year-old husky, was minding his own business when Olivia walked boldly into the backyard. She knelt in front of him and calmly swapped his collar (which read ...