Word Finder - spherical

definition

Shaped like a sphere.

synonyms

• globular
• orbicular
• round

definition

Of, or pertaining to, spheres.

definition

Of a coordinate system, specifying the location of a point in a plane by using a radius and two angles.

definition

Of or relating to the heavenly orbs, or to the sphere or spheres in which, according to ancient astronomy and astrology, they were set.

The problem then resolves itself in the solution of a spherical triangle.

In such plants, the pollen grains are sometimes fihiform and not spherical in shape.

There were two kinds, - spherical and planispheric.

His last publication, which appeared in 1878, was on spherical harmonics (Beitreige zur Theorie der Kugelf unctionen) .

In the case of more considerable distances, however, a globe of suitable size should be consulted, or - and this seems preferable - they should be calculated by the rules of spherical trigonometry.

The earliest forms were "armillae" and spherical.

He used a spherical Helmholtz resonator resounding to the tone to be measured.

The solid enclosed by a small circle and the radii vectores from the centre of the sphere is a "spherical sector"; and the solid contained between two spherical sectors standing on copolar small circles is a "spherical cone."

The fruit is a woody capsule of three cells, each containing one large nearly spherical seed, which consists mainly of two large hemispherical cotyledons.

Drop-shaped jars with spherical bases are typical, and scrabbled patterns of incised lines.

In order to render an 'account of Tyndall's "residual blue" it is necessary to pursue the approximation further, taking for simplicity the case of spherical shape.

For safety during hibernation and moulting, book-scorpions spin a small spherical cocoon.

Into each ovarian sac behind the transverse junction opens a slender tube, which is greatly coiled, and, in its turn, opens into a spherical "spermathecal sac."

The embryo undergoes differentiation into an outer layer of cells that produce a chitinoid coat, a middle layer of cells, and a central spherical hexacanth body closely enveloped by the middle coat.

They may be used either alone or in combination with spherical lenses.

Let us then suppose a spherical shell 0 to be electrified.

It may be regarded as an epicycloid in which the rolling and fixed circles are equal in diameter, as the inverse of a parabola for its focus, or as the caustic produced by the reflection at a spherical surface of rays emanating from a point on the circumference.

Aristarchus is also said to have invented two sun-dials, one hemi spherical, the so-called scaphion, the other plane.

Rayleigh points out that this clinging of the sound to the surface of a concave wall does not depend on the exactness of the spherical form.

In "geodesy," and the cognate subject "figure of the earth," the matter of greatest moment with regard to the sphere is the determination of the area of triangles drawn on the surface of a sphere - the so-called "spherical triangles"; this is a branch of trigonometry, and is studied under the name of spherical trigonometry.

The moon is spherical.

But the nakshatras are twenty-eight, and are represented by as many " junction stars " (yogatara), carefully determined by their spherical co-ordinates.

The motion of the well-known steady spherical vortex is an example of the latter case.

Of the Ceylonese galls, " some are as symmetrical as a composite flower when in bud, others smooth and spherical like a berry; some protected by long spines, others clothed with yellow wool formed of long cellular hairs, others with regularly tufted hairs."

Aleppo galls (gallae halepenses) are brittle, hard, spherical bodies, in.

For spherical shot is not constant, and a separate ballistic table must be constructed; but may be taken as 1.7 on the average.

For the mathematical investigation see Spherical Harmonics and for tables see Table, Mathematical.

The " new invention in Denmark " to which Anthony Wood refers as having given the hint to Napier was probably the method of calculation called prosthaphaeresis (often written in Greek letters irpooOa4aipeats), which had its origin in the solution of spherical triangles.

Melicertaceae; females tubicolous, usually attached, or forming spherical floating social aggregates; males free swimming.

Asplanchnaceae, plankton, dwellers in small pools, are, however, ovoid, and Trochosphaera is spherical and must owe its floating powers to the low density of the liquid in its enormously dilated bodycavity.

With Vieta, by reason of the advance in arithmetic, the style of treatment becomes more strictly trigonometrical; indeed, the Universales Inspectiones, in which the calculation occurs, would now be called plane and spherical trigonometry, and the accompanying Canon mathematicus a table of sines, tangents and secants.'

The yellow stamen-bearing flowers are in sessile, nearly spherical catkins; the fertile ones vary in colour, from red or purple to greenish-white, in different varieties; the erect cones, which remain long on the branches, are above an inch in length and oblong-ovate in shape, with reddish-brown scales somewhat waved on the edges, the lower bracts usually rather longer than the scales.

A circlet of cilia forms when the embryo is still nearly spherical in an equatorial position.

Thomson 6 places spherical bulbs inside thick spiral conductors through which the oscillating discharge of a powerful battery is led.

The spherical granules (G) are probably gland-secretions; the dark bodies (Z) are probably xanthellae, i.e.

A spherical angle is a particular dihedral angle; it is the angle between two intersecting arcs on a sphere, and is measured by the angle between the planes containing the arcs and the centre of the sphere.

Suppose two small smooth spherical bodies which can be regarded as particles to be brought into collision, so that the velocity of each, relative to any base which is unaffected by the collision, is suddenly changed.

Some years later he succeeded in showing that Kepler's elliptic orbit for planetary motion agreed with the assumed law of attraction; he also completed the co-ordination with terrestrial gravity by his investigation of the attractions of homogeneous spherical bodies.

The almost spherical head is covered by a hood which can be retracted; it bears upon its side a number of sickle-shaped, chitinous hooks and one or more short rows of low 89 spines - both of these features are used in characterizing the various species.

Experience shows that, although spherical pebbles are to be avoided, Portland cement adheres tightly to smooth flint surfaces, and that rough stones often give a less compact concrete than smooth ones on account of the difficulty of bedding them into the matrix when laying the concrete.

When the free ends of the hyphae emerge again into the air they swell up into spherical bodies which may either fall off and behave as conidia, each putting out a germ-tube and infecting the host; or the germ-tube itself swells up into a zoosporangium which develops a number of zoospores.

The seed is rather larger than a hazel nut, with a thicker and darker shell and per- Planting fectly spherical shape.

Spherical hard stone hammers (6) were held in the hand for dressing down granite.

Fischer has further established the fact that the peripheral mass, which is a hollow sphere in spherical cells, and either a hollow cylinder or barrel-shaped body in filamentous forms, must be regarded as the single chromatophore of the Cyanophyceous cell.

Thus, although isogamy consists in typical cases of a union of naked motile gametes by a fusion which begins at the beaked ends, and results in the formation of an immotile spherical zygote surrounded by a cell-wall, in Leptosira it is noticeable that the fusion begins at the blunt end; in a species of Chlamydomonas the two gametes are each included in a cell-wall before fusion; and in many cases the zygote retains for some time its motility with the double number of cilia.

The antheridia are spherical orange-coloured bodies of very complex structure.

Then usually these layers successively give way, and the spherical naked oospheres float free in the water.

The thallus is somewhat spherical and unicellular, exhibiting a distinction between anterior and posterior extremities, and dorsal and ventral surfaces.

In Synura and Chromulina the cells form a spherical motile colony, recalling Volvocaceae.

Until Newton's discovery of the different refrangibility of light of different colours, it was generally supposed that object-glasses of telescopes were subject to no other errors than those which arose from the spherical figure of their surfaces, and the efforts of opticians were chiefly directed to the construction of lenses of other forms of curvature.