Helical Sentence Examples
Crystals with a helical twist are not uncommon.
Helical motion and screws adapted to it are said to be right- or left-handed according to the G appearance presented by the rotation to an observer looking towards the direction of the translation.
The pitch of a screw is the distance, measured parallel to its axis, between two successive turns of the same thread or helical projection.
In wheelwork of this kind the contact of each pair of teeth commences at the foremost end of the helical front, and terminates at the aftermost end; and the helix is of such a pitch that the contact of one pair of teeth shall not terminate until that of the next pair has commenced.
He also invented, with the same object, teeth whose fronts, instead of being parallel to the line of contact of the pitch-circles, cross it obliquely, so as to be of a screw-like or helical form.
Stepped and helical teeth have the desired effect of increasing the smoothness of motion, but they require more difficult and expensive workmanship than common teeth; and helical teeth are, besides, open to the objection that they exert a laterally oblique pressure, which tends to increase resistance, and unduly strain the machinery.
Screws.The figure of a screw is that of a convex or concave cylinder, with one or more helical projections, called threads, winding round it.
The relation between the advance and the rotation, which compose the motion of a screw working in contact with a fixed screw or helical guide, has already been demonstrated in 32; and the same relation exists between the magnitudes of the rotation of a screw about a fixed axis and the advance of a shifting nut in which it rotates.
Hookes wheels with oblique or helical teeth are in fact screws of many threads, and of large diameters as compared with their lengths.
We have shown that fluoride anions can be used to generate helical structures in the solid state.Advertisement
The azimuth Drive is based upon a helical gear machined into the outside race of the azimuth bearing.
Fully controlled three-way catalytic converter with two oxygen sensors Six-speed gearbox with helical gears.
These calculators can be used for either primary or secondary single layer helical coils.
Such a mutation could for example be in one of the DNA-binding helices introducing a kink in a normally straight and rigid helical conformation.
A high correlation has been found between the scaled index and helical twisting power for a range of chiral dopants.Advertisement
Each motor drives a protruding helical filament, and the rotating filaments provide the propulsive force for cells to swim.
This is the spectrum of myoglobin, a mostly helical protein.
For crossed helical gears to operate successfully they must have the same pressure angle and the same normal pitch.
Since there are 13 actin subunits per helical turn, myosin V has a relatively long step length of 74 nm.
Solution studies indicate that an equimolar mixture of the three peptides forms a helical trimer with high specificity and stability.Advertisement
The vortex patterns correspond to the intersection of the laser sheet with the trailing, helical vortices from the turbine blades.
As expected from spectroscopy measurements PrPc is predominantly alpha helical and contains almost no beta sheet.
It is preferable to use helical or offset fletching instead of straight fletching on your arrows when hunting.
Get a look at the helical structured wind turbine and Phillipe Starck's home windmill.
There is a vertical axis helical design that is much more attractive and perfect for residential areas.Advertisement
To cause a body to move in this manner it is usually made of a helical or screw-like figure, and moves in a guide of a corresponding figure.
The translation of a body in helical motion is called its advance.