helicoid
helicoidal

He used to equate the helicoid form to movement and the hyperboloid to light.

That is, the helicoid flighting started at one end and ended at the other.

Toro's eyes could see which of the painted helicoid marks were new.

The 2 helicoid whorls of the protoconch are small, depressed.

They form a rather elevated helicoid spire.

They form a depressed helicoid spire, which is obliquely half immersed in the first of the succeeding turns.

The protoconch has a helicoid shape.

The 2 whorls of the protoconch form a rather solute, elevated, helicoid spire.

Classic examples include the catenoid, helicoid and Enneper surface.

The depressed, umbilicate shell is helicoid or almost stomatia-shaped.

The protoconch is helicoid.

This organ has about 1,500 tentacles, each some 2.5 millimetres long, arranged in a pair of helicoid whorls with four to seven coils.

The helicoid ramp, which has a radius of approximately 75 m and a 40% gradient, bends in until the rails point downstream.

The helicoid shell is widely umbilicated, fulvous, punctate with red.

Armature of helicoid landshells.

Its color is chestnut brown with a wax yellow apex The 2 whorls of the protoconch form a depressed helicoid spire.

The two helicoid whorls of the protoconch are moderately large, and about one-third immersed in the later whorls.

Stromal thylakoids are helicoid sheets that spiral around grana.

Interactive 3D Helicoid plotter using Processing (with code)

The 2 helicoid whorls of the protoconch are loosely coiled, decidedly elevated, and about one-fifth immersed.

A modular helicoid metal staircase, designed in 1964, was bought by the Museum of Modern Art in New York.

These are well rounded, forming a depressed helicoid spire, the axis of which is almost at right angles to the axis of the succeeding turns.

The elongation of the whole genital system is greater than in Helicoid snails generally, and doubtless correlated with the unusual length of the last whorl.

Amphidromus has an elongate conic or ovate conic helicoid shell of 5 to 8 whorls.

In the interior has a curious helicoidal staircase.

The helicoidal shape, on the other hand, splits up the force of the wind in resistance, leeway and lift.

This motion is called helicoidal flow.

The interior is home to a bizarre helicoidal stone staircase, that leads from the underground stores all the way up to the roof.

He turned to the helicoidal or spiral method, introduced by British architect Peter Nicholson in 1828.

He intended the interior to resemble a forest, with inclined columns like branching trees, helicoidal in form, creating a simple but sturdy structure.

The somewhat oblique segments will link downwards into the fault at the base of the cover sequence with a helicoidal geometry.

The storeys are connected to each other by four elegant helicoidal stairways, located at each corner of the cloisters.

Later railway engineers improved on the system, producing what became known as helicoidal construction that became the norm in English skew bridge building.

It will be obvious, that the beds of the stones should be worked into true spiral [helicoidal] planes."

Importin-beta is a helicoidal molecule constructed from 19 HEAT repeats.

They are structurally the same, each containing a microtubule triplet 9*3 helicoidal configuration forming a hollow cylinder.

Thus, the helicoidal field formed by the velocity vectors in a moving rigid body flattens out the further the points are radially from the twist axis.

However, by 1836 a young engineer called Charles Fox had improved on Nicholson's helicoidal method and other writers were proposing alternative approaches to the problem.

Helicoidal skew brickwork is visible at several locations where it spans existing roads that cross the line at oblique angles.

Helicoidal flow is a contributing factor to the formation of slip-off slopes and river cliffs in a meandering section of the river.

Scottish architect Peter Nicholson sets out a method of preparing stones for construction of a helicoidal skew arch.

Helicoidal Skyscraper, New York (1968)

HOBBs can be of vortex (helicoidal) or non-vortex types.

These are accessed via three arches, similar to those onto the wall, resting on columns with helicoidal rope moulding, typical of Pre-Romanesque.

Lastly, we consider the helicoidal parameter changes occurring after B I -B II transitions.

The case consists of a number of mined leaflets placed transversely on top of each other, resulting in a somewhat helicoidal case.

Catalan proved in 1842/43 that the helicoid is the only ruled minimal surface.

They are rather large, depressed helicoid, well rounded, and about half immersed in the first of the succeeding turns.

The 2 whorls of the protoconch are very small, low, and helicoid.

The catenoid and the helicoid are two very different-looking surfaces.

They are depressed, and helicoid.

He also discovered the helicoid.

The helicoid is homeomorphic to the plane .

A "filled-in" helix - for example, a spiral ramp - is called a helicoid.

The helicoid has principal curvatures .

The helicoid is also a ruled surface (and a right conoid), meaning that it is a trace of a line.

In addition, these particles can also jam or otherwise hinder the focusing feature of a lens if they enter into the focusing helicoid.

They were the third non-trivial examples of minimal surfaces (the first two were the catenoid and helicoid).

The external bayonet is used to mount longer and heavier lenses where the built-in helicoid would not be strong enough to rotate the lens barrel.

Because they are members of the same associate family of surfaces, one can bend a catenoid into the shape of a helicoid without stretching.

Some of their games were notable for being hybrid games, a combination of two different game genres such as Helicoid and Heavy Nova.

If α is positive then the helicoid is right-handed as shown in the figure; if negative then left-handed.

The helicoid is a ruled surface - but unlike the ruled surfaces mentioned above, it is not a developable surface.

The sum of these quantities gives the mean curvature (zero since the helicoid is a minimal surface) and the product gives the Gaussian curvature.

They are depressed helicoid, having their axis almost at right angles to that of the succeeding turns, in the first of which they are about half immersed.

Other examples are a conical surface with elliptical directrix, the right conoid, the helicoid, and the tangent developable of a smooth curve in space.

Many explicit examples of minimal surface are known explicitly, such as the catenoid, the helicoid, the Scherk surface and the Enneper surface.

It follows from Theorema Egregium that under this bending the Gaussian curvature at any two corresponding points of the catenoid and helicoid is always the same.

The standard autofocus lens mounting technology of the time used a motor in the camera body to drive the mechanics of the focus helicoid in the lens by using a transfer lever.

He studied mathematics at the University of Groningen from 1911 to 1918 and titled his Ph.D. thesis "A Contribution to the Knowledge of the Flat Helicoid."