A large white bear that lives in the Arctic regions of North America. They are powerful swimmers and…
"Æluropus melanoleucus- A remarkable genus of carnivorous quadrupdes of the arctoid series of the order…
"Goose is the name of a well-known family of natatorial birds. The domestic goose is believed to have…
"Modern dynamo with four consequent pole field magnets. In this construction the ring shaped yoke also…
A Swedish naturalist and explorer, born in Helsingfors, Finland, Nov. 18, 1832; died Aug. 12, 1901.…
"The Earth, whose diameter is 7,912 miles, is represented by the globe, or sphere. The straight line…
"Now it is the inclination of the Earth's axis, as above described, which causes the lengths of the…
"Now it is the inclination of the Earth's axis, as above described, which causes the lengths of the…
"Suppose the Earth to be in her Summer solstice, which takes place on the 21st of June. At this period…
"Two hoops of thin iron are placed upon an axis which passes through their poles. The two ends of each…
Illustration of a parabola showing that any point of a parabola is the mean proportional between the…
Illustration of a parabola showing point P is equidistant to the focus and the directrix.
Illustration of a parabola. "If a line PT is drawn from any point P of the curve, bisecting the angle…
Illustration showing that if two tangents RP and RQ are drawn from a point R to a parabola, the line…
Illustration showing that the area of a parabolic segment made by a chord is two thirds the area of…
Illustration showing the definition of a parabola as a conic section. "The section of a right circular…
Illustration showing the definition of a parabola as a conic section. "The section of a right circular…
Illustration of a polar graph/grid that is marked and labeled in 30° increments and units marked…
Illustration of a polar graph/grid that is marked, but not labeled, in 30° increments and units…
Illustration of a polar graph/grid that is a unit circle marked and labeled in 30° increments.
Illustration of a polar graph/grid that is a unit circle marked, but not labeled, in 30° increments.
Illustration of a polar graph/grid that is marked and labeled in 30° increments and units marked…
Illustration of a polar graph/grid that is marked, but not labeled, in 30° increments and units…
Illustration of a polar graph/grid that is marked and labeled in 30° increments and units marked…
Illustration of a polar graph/grid that is marked, but not labeled, in 30° increments and units…
Illustration of a polar graph/grid that is marked and labeled in 30° increments and units marked…
Illustration of a polar graph/grid that is marked, but not labeled, in 30° increments and units…
Illustration of a polar graph/grid that is marked and labeled in 30° increments and units marked…
Illustration of a polar graph/grid that is marked, but not labeled, in 30° increments and units…
Illustration of a polar graph/grid that is marked and labeled in 30° increments and units marked…
Illustration of a polar graph/grid that is marked, but not labeled, in 30° increments and units…
Illustration of a polar graph/grid that is marked and labeled in 30° increments and units marked…
Illustration of a polar graph/grid that is marked, but not labeled, in 30° increments and units…
Illustration of a polar graph/grid that is marked and labeled in 30° increments and units marked…
Illustration of a polar graph/grid that is marked, but not labeled, in 30° increments and units…
Illustration of a polar graph/grid that is marked and labeled in 30° increments and units marked…
Illustration of a polar graph/grid that is marked, but not labeled, in 30° increments and units…
Illustration of a polar graph/grid that is marked and labeled in 15° increments and units marked…
Illustration of a polar graph/grid that is marked, but not labeled, in 15° increments and units…
Illustration of a polar graph/grid that is marked and labeled in 15° increments and units marked…
Illustration of a polar graph/grid that is marked, but not labeled, in 15° increments and units…
Illustration of a polar graph/grid that is marked and labeled in 15° increments and units marked…
Illustration of a polar graph/grid that is marked, but not labeled, in 15° increments and units…
Illustration of a polar graph/grid that is marked and labeled in 15° increments and units marked…
Illustration of a polar graph/grid that is marked, but not labeled, in 15° increments and units…
Illustration of a polar graph/grid that is marked and labeled in 15° increments and units marked…