A nonplane curve whose tangents are all equally inclined to a given plane. The common helix is the curve formed by the thread of the ordinary screw. It is distinguished from the spiral, all the convolutions of which are in the plane.
(n) A 3-D curve characterized by a constant rate of curvature about two dimensions and a constant linear translation in the third. Threads on screws and bolts are helical and are classified as being either right- or left-handed.
A spiral-wound wire used as a hinge or attaching device.
This is a screw-shaped spiral.
(1) A spirally wound transmission line used in a traveling-wave tube to delay the forward progress of the input traveling wave. (2) A large coil of wire. It acts as a coil and is used with variable inductors for impedance matching of high-power transmitters.
A spiral section of track, similar to a corkscrew.
A spiral structure in a macromolecule that contains a repeating pattern.
in genetics, a chain or coil which carries the genetic material in DNA. It is composed of nucleotides. DNA has two chains/coils which are wound around each other. This is called a 'double helix'.
A spiral track, like a corkscrew, for changing elevations on a model railroad.
The spiral form (open or closed) of compression, extension, and torsion springs.
a structure consisting of something wound in a continuous series of loops; "a coil of rope"
a circular spiral with all the turns the same diameter
a counterclockwise spiral, that all plants emerge from the ground in counterclockwise spirals as seen by the placement of branches et al from the ground up
a spiral section with a repeating pattern
a three-dimensional spiral, like the shape of a spring or the railing on a spiral staircase
a three dimensional spiral that is not open-ended
a twisted shape like a spring, screw or a spiral staircase
a winding shape, similar to a spiral; the DNA molecule has a double — helix shape, which is two helixes twisted around each other.
Having a spiral, coiled form such as a screw thread or a spring.
A spiral structure of a molecule containing a repeating pattern.
is preserved from the Greek and has maintained its meaning since antiquity. The Greek word seems to have been used generally to apply to ideas about wrapping or twisting, but only its mathematical meaning seems to have survived.
A spiral, staircase-like structure.
the laminated curved structural member which forms the foundation of York Spiral stairs. York Stairs are double-helical in design, with an inside and outside helix securing the stair treads.
A wire or other reinforcement material spiraled around the cylindrical body of a hose.
a spiral motif, especially on a shaft or column.
The spiral shape of compression, extension and torsion springs.