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Aristotle's axiom is weaker than the parallel postulate. -
A rotating shaft unbalanced by two attached weights. -
Possible spin angular momentum values for 1/2 spin particles. -
Force diagram in co-rotating frame for water surface in rotating bucket. -
Conjugate poles in left s-plane. -
A coelomate animal is essentially a set of concentric tubes. -
Payment streams represented by actuarial notation for annuities of term n. -
Current continuity in capacitor using displacement current. -
Hemispherical dome that appears alongside other dome designs. -
Vectors showing relation between an object's proper motion and its velocity. -
The dihedral angle (red) is between two half-planes (blue). -
Grass flower with vestigial perianth, also known as lodicules. -
An illustration of message collision in multiaccess channels. -
An illustration of the generalised binary splitting algorithm. -
An illustration for the a common Group testing problem. -
Symbol for an royal knight used in chess variant games. -
Icon of a fairy chess piece used in chess variant games. -
Illustration showing the semi-major axis of an ellipse. -
Operation Uranus Deception German View 18 Nov 1942 (1989). -
Actual Soviet Dispositions with subsequent attacks (1942). -
Forces on rotating spheres tied with string with angular velocity ω. -
Rotating spheres tied with string with angular velocity ω. -
A point in spherical coordinates has a latitude φ and longitude ω. -
A stereographic projection from the north pole onto a plane below the sphere. -
See File:Line elements.svg for how not to do an SVG conversion. -
Wasps are paraphyletic, consisting of the Apocrita without Ants and Bees. -
Diagram explaining Path integration, core function of Animal navigation. -
An attacker remains on a line between the target and the start. -
Whales are paraphyletic with respect to the dolphins and porpoises. -
Dazzle camouflage is meant to cause the enemy to take up a poor position. -
The structures that provide structural coloration in Papilio palinurus. -
The reflectors are oriented nearly vertically to provide effective camouflage. -
Dispersal of melanophores controls colour change in fish and frogs. -
A flanged body or a camouflage net helps to hide a shadow. -
Countershading acts as a form of camouflage with a flat appearance. -
Archimedes' considered the smallest cylinder containing a sphere. -
An animation of a solution to the false coin problem, a group-tesing problem. -
An illustration of the COMP algorithm. This one correctly labels a and b. -
A non-adaptive group testing setup. y contains the result of each test. -
llustration of the unit circle, showing the direction of positive / negative angles. -
Illustration of a vector field, called F, over a surface, called . -
Illustration of the projected orbit of the meteorite Neuschwanstein. -
A shape can be made more round while keeping its perimeter fixed. -
An illustration of the inverse of a circle not passing through O. -
An illustration of the inverse of a circle passing through O. -
Illustration of the vectors involved in the parallelogram law. -
Illustration of a convex set containing the two points X and Y. -
Illustration of a concave set containing the two points X and Y. -
Diagram illustrating a change in order of integration. -
Lattice of Gaussian integers in the complex plane. The point 3+2i is also displayed. -
Astronomical diagram describing altitude and azimuth. -
Diagram illustrating the dot and cross products together. -
The Pythagorean Theorem using regular pentagons on each side. -
A generalisation of Pythagoras to 3 dimensions (Brews Ohare). -
Generalization of Pythagoras's theorem by Tâbit ibn Qorra. -
Construction to generalise Pythagoras' theorem to arbitrary triangles. -
Generalisation of Pythagoras' theorem to scalene triangle. -
Illustration of the vectors involved in the parallelogram identity. -
An illustration of the central angle, Δσ, between two points. -
The separation s of two points (r1, θ1) and (r2, θ2) in polar coordinates. -
Components of proper motion. The celestial north pole is CNP. -
Euclid's construction for square roots of integers (Pythagorean theorem). -
A proof for Pythagoras' theorem using similar triangles. -
Pythagoras' applied to similar triangles on the sides of a right triangle. -
Similar right triangles showing the sec and tan trig functions. -
Similar triangles showing sine and cosine (Trigonometric identity) -
Third illustration of a series on Euclid's proof of Pythagoras' theorem. -
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Geometric construction for Kepler's calculation of θ. (Kepler's laws) -
Diagram of simple slope correction in surveying (Tape correction). -
An example of connected directed network with two components (shaded). -
An example of disconnected directed network with sections shaded. -
A diagram illustrating great-circle distance (drawn in red). -
A small network with both multiedges and self-edges (Newman, Mark E. J.). -
Structural formula of the chemical compound 1-methylindole -
Derivation involving atan2.
The very existence of Wikipedia is proof that there are more people in the world wanting to build than to tear down. Were that not true, vandals would have overwhelmed and destroyed us years ago.
I believe knowledge should be beautiful! If you need any help with diagrams just let me know and I'll see what I can do.
My main focus of work lately has been the Group Testing article, which recently passed its GA review. Next I'm hoping to take this article to featured, so any suggestions or feedback is welcome.
I am also currently recording a spoken version of the Earth article. You can find my script here.
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