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A Stobie pole is a power line pole made of two steel I-beams, joined by tie-bolts, and held apart by a slab of concrete. It was invented by Adelaide Electric Supply Company engineer James Cyril Stobie, who suggested the use of readily available materials due to the shortage of suitably long, strong, straight and termite -resistant timber in ...
Tiny hooks can be seen covering the surface of this bur. The design of hook-and-loop imitated this natural mechanism for seed dispersion. Close-up of a single bract spine of Arctium minus. The original hook-and-loop fastener was conceived in 1941 by Swiss engineer George de Mestral, [1] [2] [3] which he named velcro.
A hook ladder, also known as a pompier ladder (from the French pompier meaning firefighter) is a type of ladder that can be attached to a window sill or similar ledge by the use of a hooked extending bill with serrations on the underside. The hooked ladder then hangs suspended vertically down the face of the building.
A utility pole, commonly referred to as a transmission pole, telephone pole, telecommunication pole, power pole, hydro pole, telegraph pole, or telegraph post, is a column or post used to support overhead power lines and various other public utilities, such as electrical cable, fiber optic cable, and related equipment such as transformers and ...
These included candles, oil lamps, and gas lighting. Public street lighting was developed in the 16th century. [1] During this time, lamplighters toured public streets at dusk, lighting outdoor fixtures by means of a wick on a long pole. [2] At dawn, the lamplighter would return to put them out using a small hook on the same pole.
Don't mess with turkeys. That's the lesson we learned after watching some wild turkeys patrol a suburban neighborhood. These birds weren't messing around!
Bitcoin jumped to a record high on Tuesday, trading north of $93,800 per token as the cryptocurrency's post-election gains resumed.Bitcoin prices held steady over the weekend around $91,000 after ...
A jack post (telepost, adjustable steel column) is a steel post used in the construction trades for temporary support of ceilings, walls and trenches ().They are designed to be able to mechanically telescope to about twice their shortest length in order to span a wide variety of spaces.