Therefore, etching a rectangular hole in a ( 100 )- Si wafer results in a pyramid shaped etch pit with 54. 7 ° walls, instead of a hole with curved sidewalls as with isotropic etching.

When Messer took over, the museum's ability to present art at all was still in doubt due to the challenges presented by continuous spiral ramp gallery that is both tilted and has curved walls.

No remaining traces of the original earthworks remain, though a few old buildings retain curved walls that were part of the original circular layout.

Flanking towers, initially square and latterly curved, were introduced along the walls and gatehouses began to grow in size and complexity, with portcullises being introduced for the first time.

The trebuchet seems to have encouraged the shift towards round and polygonal towers and curved walls.

The low, curved walls are traditionally used to protect the vines from the constant wind.

The curved walls of Himeji Castle are sometimes said to resemble giant, but the principal materials used in the structures are stone and wood.

Ionic columns were then added to both curved walls, giving the extensions an architectural and visual unity that had been lacking and producing the building's exterior as it is today.

The curved walls of bowls allow skaters to ride around and across the bowl in addition to the back and forth skating you might see on a traditional half pipe.

In a well designed flow park a skater can pump around the parks curved walls such as quarter pipes, pump bumps and bowl corners without taking their feet off to push.

They had rifled barrels with thin walls and curved grooves inside the barrels which made them light and much more accurate than the British muskets.

One non-local Bell Beaker sherd, however, belonging to the upper part of a beaker with a curved neck and thin walls, was found at the bedrock base of this second phase.

The early medieval layout of the town is still apparent from the street plan, with Boutport Street following the curved line of the ditch outside the town walls.

Because of the depth of the line, most underground stations on this line ( except Admiralty, Shau Kei Wan and Tai Koo ) have curved walls on the platforms, which are due to the routes ' cylindrical tunnels, only with a greater diameter.

The signature curved stone walls, known as musha-gaeshi, as well as wooden overhangs, were designed to prevent attackers from penetrating the castle.

There are 25, 000 granite slabs on the curved walls which, placed end to end, would stretch 46 kilometres.

The general structure is almost always the same: posts and lintels support a large and gently curved roof, while the walls are paper-thin, often movable and in any case non-carrying.

The slightly curved eaves extend far beyond the walls, covering verandas, and their weight must therefore be supported by complex bracket systems called tokyō, in the case of temples and shrines.

The Bell Inn in Market Street was an example of such a pub with curved holes in the walls to allow hump backed drinkers to sit up straight.

Gradara Castle, Italy, outer walls 13th .- 14th. c., showing on the tower curved v-shaped notches in the merlons

The second largest consumer of polycarbonates is the construction industry, e. g. for domelights, flat or curved glazing, and sound walls.

For example, at Muchalls Castle in Scotland adjacent walls to the barrel vaulted chambers are up to 4, 6 meters ( 15 feet ) thick, adding the buttressing strength needed to secure the curved design.

The red squirrel, like most tree squirrels, has sharp, curved claws to enable it to climb and descend broad tree trunks, thin branches and even house walls.

Cordwood walls can be load-bearing ( using built-up corners, or curved wall designed ) or laid within a post and beam framework which provides structural reinforcement and is suitable for earthquake-prone areas.

Single-U and double-U preparation joints are also fairly common — instead of having straight edges like the single-V and double-V preparation joints, they are curved, forming the shape of a U. Lap joints are also commonly more than two pieces thick — depending on the process used and the thickness of the material, many pieces can be welded together in a lap joint geometry.

The African elephant ( Loxodonta africana ) is a very large herbivore having thick, almost hairless skin, a long, flexible, prehensile trunk, upper incisors forming long curved tusks of ivory, and large, fan-shaped ears.

This occurs over long period of time with the spreading center or ridge slowly deforming from a straight line to a curved line and then finally fracturing along these planes forming transform faults.

The mouth is anterior ventral and leads to a curved cytopharynx supported by a prominent palisade of rods or nematodesmata, forming a structure called a cyrtos or nasse, typical of this and a few other classes.

However, in mammals, the bones have curved inward, creating the palatine process and thereby also forming part of the roof of the mouth.

They invented the Nubian vault a type of curved surface forming a vaulted structure.

Soon after the invention of the refracting telescope Galileo, Giovanni Francesco Sagredo, and others, spurred on by their knowledge that curved mirrors had similar properties as lenses, discussed the idea of building a telescope using a mirror as the image forming objective.

Soon after the invention of the refracting telescope, Galileo, Giovanni Francesco Sagredo, and others, spurred on by their knowledge of the principles of curved mirrors, discussed the idea of building a telescope using a mirror as the image forming objective.

When viewed from the side, the blade of a figure skate is not flat, but curved slightly, forming an arc of a circle with a radius of.

Originally they were made by forming clay around a curved surface, often a log or the maker's thigh.

Campylobacter jejuni is a species of curved, helical-shaped, non-spore forming, Gram-negative, microaerophilic bacteria commonly found in animal feces.

The main difference between a forming operation and a bending operation is the bending operation creates a straight line bend ( such as a corner in a box ) as where a form operation may create a curved bend ( such as the bottom of a drink can ).

The curved ribs, extending from the same point on the wall, are spaced equidistant from each other, forming conoid shapes.

The logo is a curved " G " completing a curved " A ", forming a circle logo.

It was a floating bridge with a lift span, constructed of hollow concrete pontoons, 24 in all, connected together forming a crescent shape curved upstream, and anchored in the middle.

* Guilloche — Interlocking curved bands in a repeating pattern often forming circles enriched with rosettes and found in Assyrian ornament, classical and Renaissance architecture.

The curule chair was traditionally made of or veneered with ivory, with curved legs forming a wide X ; it had no back, and low arms.

If Niccolò Zucchi's claim of exploring the idea of a reflecting telescope in 1616 was true, then it would be the earliest known description of the idea of using a curved mirror as an image forming objective, predating Galileo Galilei and Giovanni Francesco Sagredo's discussions of the same idea in the 1620s.

A similar ride around the same time, the Tickler, consisted of curved rails and posts forming a zig-zag route down an incline surface.

There are 23 to 32 secondary veins in pairs, which are straight at the base, up curved at the apex, and forming an angle of 45-85 ° with the Costa, the rib, ridge in a midrib of a leaf.

On March 24, 1957, two men discovered " curved lines of stones " sticking out of the peat forming a two feet high wall which surrounded a raised area in the middle.

The ahwash ( Fr., ahouache ) performed by Berber tribes of the Moroccan High Atlas Mountains, includes one or several curved lines of men and one or several curved lines of women, the whole forming a circle or ellipse around male drummers ( Jouad and Lortat-Jacob, 1978 ; Lortat-Jacob, 1980 ).