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The name "Drukken" steps derives from a person's gait as they stepped from stone to stone whilst crossing the Red Burn. Seven or more stones were originally set in the Red Burn which was much wider than in 2009. [3] Burns himself used the Scots spelling "Drucken" rather than "Drukken". [4] The ruins of the Drukken Steps are in the Eglinton ...
The second part of the book uses the octonions and the other division algebras associated with it to provide concrete descriptions of the Lie groups of geometric symmetries. These include rotation groups , spin groups , symplectic groups , and the exceptional Lie groups , which the book interprets as octonionic variants of classical Lie groups.
Marleka fairy stone from Stensö in Sweden Iron sulfide concretions, such as the Kansas Pop rocks, consisting of either pyrite and marcasite , are nonmagnetic. [ 79 ] On the other hand, iron sulfide concretions, which either are composed of or contain either pyrrhotite or smythite , will be magnetic to varying degrees. [ 80 ]
Some types of concrete used to make garden sculptures and planters have been called composition stone or composite stone. There is no single precise formula that differentiates composition stone from other lime-cemented concretes, which is unsurprising because the term predates modern chemical science, being attested since at latest the 1790s.
Concrete roadway in San Jose, California A concrete road in Ewing, New Jersey. Concrete surfaces (specifically, Portland cement concrete) are created using a concrete mix of Portland cement, coarse aggregate, sand, and water. In virtually all modern mixes there will also be various admixtures added to increase workability, reduce the required ...
8 x 19 x 19 ft. [4] Puddle Jumpers: Glenna Goodacre: 1989 Marina Park: Bronze 68 in. x 12 ft. x 41 in. [5] Changing Workplace, Yesterday, Today, Tomorrow: John Hoge and Richard Beyer: ca. 1985 Lake Washington Institute of Technology East Building (outside)
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