ClipArt ETC
Illustration of a polar graph/grid that is marked, but not labeled, in 60° increments and units marked to 4.

Polar Grid In Degrees With Radius 4

Illustration of a polar graph/grid that is marked, but not labeled, in 60° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 60° increments and units marked to 5.

Polar Grid In Degrees With Radius 5

Illustration of a polar graph/grid that is marked and labeled in 60° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 60° increments and units marked to 5.

Polar Grid In Degrees With Radius 5

Illustration of a polar graph/grid that is marked, but not labeled, in 60° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 60° increments and units marked to 6.

Polar Grid In Degrees With Radius 6

Illustration of a polar graph/grid that is marked and labeled in 60° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 60° increments and units marked to 6.

Polar Grid In Degrees With Radius 6

Illustration of a polar graph/grid that is marked, but not labeled, in 60° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 60° increments and units marked to 7.

Polar Grid In Degrees With Radius 7

Illustration of a polar graph/grid that is marked and labeled in 60° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 60° increments and units marked to 7.

Polar Grid In Degrees With Radius 7

Illustration of a polar graph/grid that is marked, but not labeled, in 60° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 60° increments and units marked to 8.

Polar Grid In Degrees With Radius 8

Illustration of a polar graph/grid that is marked and labeled in 60° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 60° increments and units marked to 8.

Polar Grid In Degrees With Radius 8

Illustration of a polar graph/grid that is marked, but not labeled, in 60° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 60° increments and units marked to 9.

Polar Grid In Degrees With Radius 9

Illustration of a polar graph/grid that is marked and labeled in 60° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 60° increments and units marked to 9.

Polar Grid In Degrees With Radius 9

Illustration of a polar graph/grid that is marked, but not labeled, in 60° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked to 10.

Polar Grid In Degrees With Radius 10

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units marked to 10.

Polar Grid In Degrees With Radius 10

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked to 1.

Polar Grid In Degrees With Radius 1

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units marked to 1.

Polar Grid In Degrees With Radius 1

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked to 2.

Polar Grid In Degrees With Radius 2

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units marked to 2.

Polar Grid In Degrees With Radius 2

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked to 3.

Polar Grid In Degrees With Radius 3

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units marked to 3.

Polar Grid In Degrees With Radius 3

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked to 4.

Polar Grid In Degrees With Radius 4

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units marked to 4.

Polar Grid In Degrees With Radius 4

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked to 5.

Polar Grid In Degrees With Radius 5

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units marked to 5.

Polar Grid In Degrees With Radius 5

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked to 6.

Polar Grid In Degrees With Radius 6

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units marked to 6.

Polar Grid In Degrees With Radius 6

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked to 7.

Polar Grid In Degrees With Radius 7

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units marked to 7.

Polar Grid In Degrees With Radius 7

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked to 8.

Polar Grid In Degrees With Radius 8

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units marked to 8.

Polar Grid In Degrees With Radius 8

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units…

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked to 9.

Polar Grid In Degrees With Radius 9

Illustration of a polar graph/grid that is marked and labeled in 45° increments and units marked…

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units marked to 9.

Polar Grid In Degrees With Radius 9

Illustration of a polar graph/grid that is marked, but not labeled, in 45° increments and units…

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with the x- and y-axes indicated. The circle is marked and labeled in both radians and degrees in 45° increments. At each angle, the coordinates are given. These coordinates can be used to find the six trigonometric values/ratios. The x-coordinate is the value of cosine at the given angle and the y-coordinate is the value of sine. From those ratios, the other 4 trigonometric values can be calculated.

Unit Circle Labeled In 45 ° Increments

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with…

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with the x- and y-axes indicated. The circle is marked and labeled in radians. All quadrantal angles and angles that have reference angles of 30°, 45°, and 60° are given in radian measure in terms of pi. At each angle, the coordinates are given. These coordinates can be used to find the six trigonometric values/ratios. The x-coordinate is the value of cosine at the given angle and the y-coordinate is the value of sine. From those ratios, the other 4 trigonometric values can be calculated.

Unit Circle Labeled With Special Angles And Values

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with…

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with the x- and y-axes indicated. All quadrantal angles and angles that have reference angles of 30°, 45°, and 60° are given in radian measure in terms of pi. At each quadrantal angle, the coordinates are given. These coordinates can be used to find the six trigonometric values/ratios. The x-coordinate is the value of cosine at the given angle and the y-coordinate is the value of sine. From those ratios, the other 4 trigonometric values can be calculated.

Unit Circle Labeled At Special Angles

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with…

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane. All quadrantal angles are given in radian measure in terms of pi. At each angle, the coordinates are given. These coordinates can be used to find the six trigonometric values/ratios. The x-coordinate is the value of cosine at the given angle and the y-coordinate is the value of sine. From those ratios, the other 4 trigonometric values can be calculated.

Unit Circle Labeled With Quadrantal Angles And Values

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane. All…

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane. At each quadrantal angle, the coordinates are given, but not the angle measure. These coordinates can be used to find the six trigonometric values/ratios. The x-coordinate is the value of cosine at the given angle and the y-coordinate is the value of sine. From those ratios, the other 4 trigonometric values can be calculated.

Unit Circle Labeled With Quadrantal Values

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane. At each…

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with the x- and y-axes indicated. At each quadrantal angle, the coordinates are given, but not the angle measure. These coordinates can be used to find the six trigonometric values/ratios. The x-coordinate is the value of cosine at the given angle and the y-coordinate is the value of sine. From those ratios, the other 4 trigonometric values can be calculated.

Unit Circle Labeled With Quadrantal Values

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with…

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with the x- and y-axes indicated. All quadrantal angles are given in degree measure. At each angle, the coordinates are given. These coordinates can be used to find the six trigonometric values/ratios. The x-coordinate is the value of cosine at the given angle and the y-coordinate is the value of sine. From those ratios, the other 4 trigonometric values can be calculated.

Unit Circle Labeled With Quadrantal Angles And Values

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with…

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with the x- and y-axes indicated. All quadrantal angles are given in both radian and degree measure. At each angle, the coordinates are given. These coordinates can be used to find the six trigonometric values/ratios. The x-coordinate is the value of cosine at the given angle and the y-coordinate is the value of sine. From those ratios, the other 4 trigonometric values can be calculated.

Unit Circle Labeled With Quadrantal Angles And Values

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with…

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with the x- and y-axes indicated. At 45° increments, the angles are given in both radian and degree measure. At each quadrantal angle, the coordinates are given. These coordinates can be used to find the six trigonometric values/ratios. The x-coordinate is the value of cosine at the given angle and the y-coordinate is the value of sine. From those ratios, the other 4 trigonometric values can be calculated.

Unit Circle Labeled In 45° Increments With Values

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with…

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with the x- and y-axes indicated. At 45° increments, the angles are given in both radian and degree measure. At each angle, the coordinates are given. These coordinates can be used to find the six trigonometric values/ratios. The x-coordinate is the value of cosine at the given angle and the y-coordinate is the value of sine. From those ratios, the other 4 trigonometric values can be calculated.

Unit Circle Labeled In 45° Increments With Values

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with…

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with the x- and y-axes indicated. The circle is marked and labeled in both radians and degrees at all quadrantal angles and angles that have reference angles of 30°, 45°, and 60°. At each angle, the coordinates are given. These coordinates can be used to find the six trigonometric values/ratios. The x-coordinate is the value of cosine at the given angle and the y-coordinate is the value of sine. From those ratios, the other 4 trigonometric values can be calculated.

Unit Circle Labeled With Special Angles And Values

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with…

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with the x- and y-axes indicated. The circle is marked and labeled in both radians and degrees at all quadrantal angles and angles that have reference angles of 30°, 45°, and 60°. At each angle, the coordinates are given. These coordinates can be used to find the six trigonometric values/ratios. The x-coordinate is the value of cosine at the given angle and the y-coordinate is the value of sine. From those ratios, the other 4 trigonometric values can be calculated.

Unit Circle Labeled With Special Angles And Values

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with…

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with the x- and y-axes indicated. At 30° increments, the angles are given in both radian and degree measure. At each angle, the coordinates are given. These coordinates can be used to find the six trigonometric values/ratios. The x-coordinate is the value of cosine at the given angle and the y-coordinate is the value of sine. From those ratios, the other 4 trigonometric values can be calculated.

Unit Circle Labeled In 30° Increments With Values

Illustration of a unit circle (circle with a radius of 1) superimposed on the coordinate plane with…

The figure "illustrates the bending of the solar rays entering the atmosphere. When the sun is below the horizon, at C, it would be invisible at A, on account of the curvature of the earth, if there were no atmosphere; but the solar rays entering the atmosphere near the point B are refracted so that they reach A, and the sun appears to be at D, though really at C below the horizon, either in the morning or in the evening. So that, in the polar regions, the sun is visible while it is in reality below the horizon, and is thus seen earlier and later during the time of polar sunlight." -Waldo, 1896

Atmospheric Optics

The figure "illustrates the bending of the solar rays entering the atmosphere. When the sun is below…

"Directions of primary air currents (after ferrel)." -Waldo, 1896

Air Currents

"Directions of primary air currents (after ferrel)." -Waldo, 1896

"Stages in the formation of the megaspore, its germination, fertilization of the egg and endosperm cells. J, continued nuclear division has resulted in eight, namely, three antipodal nuclei, an, at the upper end of the megaspore cavity, two polar nuclei, l, in process of fusion, egg cell, eg, two synergids, s, s." -Stevens, 1916

Megaspore Formation Stage 10

"Stages in the formation of the megaspore, its germination, fertilization of the egg and endosperm cells.…

"Diagram illustrating the maturation and fertilization of the ovum. A, formation of first polar globule; B, beginning of fertilisation, sperms approaching the micropyle or aperture in the enclosing membrane of the ovum through which the sperm enters; C, formation of the male pronucleus; D, approximation of the male and female pronuclei; E, formation of segmentation-nucleus; female centrosome; male centrosome (the centrosomes are cell-structures not further referred to in this work); mem, egg-membrane; microp, micropyle; pol, polar bodies; female pronucleus; male pronucleus; seg. nucle, segmentation nucleus." -Parker, 1900

Ovum Fertilization

"Diagram illustrating the maturation and fertilization of the ovum. A, formation of first polar globule;…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes labeled and increments from -5 to 5.

-5 To 5 Coordinate Grid With Axes Labeled

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes labeled…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with increments from -5 to 5 on each axis. Axes and increments are not labeled.

-5 To 5 Coordinate Grid With No Labels

Illustration of an xy grid/graph. It is the Cartesian coordinate system with increments from -5 to 5…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and increments from -5 to 5 labeled.

-5 To 5 Coordinate Grid With Increments And Axes Labeled

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and increments…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with increments from -5 to 5 labeled.

-5 To 5 Coordinate Grid With Increments Labeled

Illustration of an xy grid/graph. It is the Cartesian coordinate system with increments from -5 to 5…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and odd increments from -5 to 5 labeled.

-5 To 5 Coordinate Grid With Axes And Odd Increments Labeled

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and odd…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with odd increments from -5 to 5 labeled.

-5 To 5 Coordinate Grid With Odd Increments Labeled

Illustration of an xy grid/graph. It is the Cartesian coordinate system with odd increments from -5…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the axes and some increments from -5 to 5 labeled.

-5 To 5 Coordinate Grid With Axes And Some Increments Labeled

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the axes and some increments…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with some increments from -5 to 5 labeled.

-5 To 5 Coordinate Grid With Some Increments Labeled

Illustration of an xy grid/graph. It is the Cartesian coordinate system with some increments from -5…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the axes and some increments from -5 to 5 labeled.

-5 To 5 Coordinate Grid With Axes And Some Increments Labeled

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the axes and some increments…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with some increments at -5 to 5 labeled.

-5 To 5 Coordinate Grid With Some Increments Labeled

Illustration of an xy grid/graph. It is the Cartesian coordinate system with some increments at -5 to…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and even increments from -5 to 5 labeled.

-5 To 5 Coordinate Grid With Axes And Even Increments Labeled

Illustration of an xy grid/graph. It is the Cartesian coordinate system with the x- and y-axes and even…

Illustration of an xy grid/graph. It is the Cartesian coordinate system with even increments from -5 to 5 labeled.

-5 To 5 Coordinate Grid With Even Increments Labeled

Illustration of an xy grid/graph. It is the Cartesian coordinate system with even increments from -5…