Duality associates with the point P the line RS, and vice versa.
In following the circle around the Mobius band, the line L twists, and the lines cannot be made to point in the same direction.
A conchoid curve results from connecting points drawn at standard distance a from line LN on all lines extending from point P.
Nicomedes (3rd century BCE) discovered a special curve, known as a conchoid, with which he was able to trisect any acute angle.
The solution to the problem of doubling the volume of a cube, as proposed by Menaechmus in the 4th century BC.
Obtaining approximate measurements through the use of differentiation and integration.
The hyperbolic functions cosh x and sinh x.
(Left) Pieces of a surface given by f(x, y) = 0; (right) if the surface is cut along the curves, an octagon is obtained.
Illustration of a continuous and a discontinuous function.
Uniformly accelerated motion; s = speed, a = acceleration, t = time, and v = velocity.
Approaching the speed of light, an object appears shorter, with a longer time interval, relative to its intervals when at rest.
Combination of shapes and alphabet
In Ptolemy's geocentric model of the universe, the Sun, Moon, and each planet orbit a stationary Earth.
Pi folding representation, illustration
Pi treemap representation, illustration
Part of the elliptic paraboloid z = x2 + y2 which can be generated by rotating the parabola z = x2 (or z = y2) about the z-axis.
Circles intersecting
The weather model of meteorologist Edward Lorenz.
The evolution of Hindu-Arabic numerals from the 1st century to the 16th century.
The first example of a system of linear equations in the Nine Chapters.
大陸別に色分けされた世界地図
世界地図
The figure shows part of the graph of the polynomial equation y = 3x4 - 16x3 + 6x2 + 24x + 1.
Trefoil knot, illustration
Music and prime numbers, artwork
Pythagorean theorem, illustration
11th Century globe, historical artwork
The onset and retreat of the West African monsoon with respect to the timing of the direct rays of the sun.
Changes in ion permeance underlying the action potential.
Mayan periodic table of elements, illustration
The Globe of Crates, historical artwork
Torus knot, computer artwork
Combination of alphabet and shapes, line
グラデーションタイマー グレースケールのチャート 色調
グラデーションタイマー カラフルなチャート 色調
Molar volume, illustration
Mole formula, illustration
Cartesian coordinates, illustration
Plant parenchyma structure, illustration
States of matter, illustration
Taxonomic hierarchy in biology, illustration
Venn diagram
The first reduction for an n-person voting game theory, illustrating the strategies least suitable for each participant.
Several points are labeled in a two-dimensional graph, known as the Cartesian plane.
Pi symbol and number, artwork
Pi symbol
White sphere, illustration
Golden ring on white background.
Collision abstract illustration.
Fractal conical abstract shapes.
blue grid graph paper with various size lines
Hyperboloids of (left) one sheet and (right) two sheets.
Artificial intelligence, conceptual illustration
Pi number wheel representation, illustration
Electron shell
Four main types of estuaries: A) salt wedge estuary, B) partially mixed estuary, C) vertically homogeneous estuary, D) fjord.
Basic components of an electrochemical cell.
Dice with graph arrow
Horizontal divergence and convergence patterns associated with the polar-front jet.
Diagram showing the Lunar tides
Kepler's laws of planetary motion, illustration
Diagram of the Earth's seasons
Displacements in the Earth in four types of free vibrations.
The Hardy-Weinberg Law applied to two alleles.
Two types of pressure gauge: the U-tube manometer and the Bourdon-tube gauge.
Theoretical depiction of the movement of tectonic plates across Earth's surface.
Light waves matching the orientation of the molecules of a polarizing filter are absorbed, reducing the intensity of the light.
The artery wall and the ultrastructure of the smooth muscle cells within it.
The Michelson interferometer measures the effect on the speed of light of the motion of the ether through which light travels.
The 4-D space-time continuum is distorted in the vicinity of any mass, depending on the mass and the distance from the mass.
Evolutionary history of the globin genes. The dots indicate the duplication of ancestral genes, giving rise to new gene lineage.
The process of cell division by mitosis.
Electromagnetic spectrum. The visible range (shaded portion) is shown enlarged on the right.
The steps involved in the engineering of a recombinant DNA molecule.
Differentiation of the external genitalia in the human embryo and fetus.
Human arterial supply and venous drainage of the organs.
The components of a scanning electron microscope (SEM).
The components of a transmission electron microscope (TEM).
The diffusion of water across a semipermeable membrane.
The diffusion of potassium cations across a semipermeable membrane.
The endoplasmic reticulum plays an important role in the biosynthesis, processing, and transport of proteins and lipids.
Three types of natural selection, showing the effects of each on the distribution of phenotypes within a population.
Diagram depicting the process of atoll formation. Atolls are formed from the remnant parts of sinking volcanic islands.
Average exchange of energy between the surface, atmosphere, and space, as percentages of incident solar radiation.
General patterns of atmospheric circulation over an idealized Earth with a uniform surface and the actual Earth.
Chemical quantities, illustration
Centripetal force, illustration
Geological map of the asteroid Vesta
Mathematical model, computer artwork
White cubes, illustration
Sphere of square notes, illustration
Infinity sign of metal balls, illustration
Sphere of linked stars, artwork
Kepler conjecture, illustration
割合が10%から90%までの円グラフのイラスト
Four colour problem, map of the USA
Geometry equations, artwork
日本地図 立体 傾き 斜め
壊れた盾
ネットバンクの個人情報が表示されたデスクト
ネットバンクの個人情報が表示されたノートパ
アカウントのログイン画面が表示されたスマー
車のアイコン アイソメトリック図法 シアン色のコンパクトカー
車のアイコン アイソメトリック図法 グレーのミニバン
車のアイコン アイソメトリック図法 深緑
車のアイコン アイソメトリック図法 黄色のコンパクトカー
車のアイコン アイソメトリック図法 紫色のレトロなセダン
車のアイコン アイソメトリック図法 赤のセダン
積み重なった2つの札束
一万円札の札束
札束
電卓 - アイソメトリック図法 右面
Pie chart, artwork
Mass spectrometer and data chart, illustration
Economy map, illustration
White rectangles
Calculator, artwork
3D cubes, illustration
Floating cubes, illustration
Abstract white geometric, illustration
Abstract fractal illustration
Fractal abstract of blue and white lines.
Greek letter Eta, lower case
Greek letter Iota, lower case
Greek letter Iota, upper case