Type in text and easily reverse it, flip it, spell it backwards. As it makes the text much more difficult to read, it is a useful technique to hide content, similar to a magazine printing an answer to a quiz upside down.
Centered Text generator aligns text in center of a page or container, creating a visually balanced and aesthetically pleasing layout for various design and document formatting needs.
Tangential Quadrilateral -- from Wolfram MathWorld
A quadrilateral which has an incircle, i.e., one for which a single circle can be constructed which is tangent to all four sides. Opposite sides of such a quadrilateral satisfy s=a+c=b+d, (1) where s=1/2(a+b+c+d) (2) is the semiperimeter, and the area is A=rs, (3) where r is the inradius. Using Bretschneider's formula together with (1) and (3) then gives the beautiful formula r = (sqrt(4p^2q^2-(a^2-b^2+c^2-d^2)^2))/(2(a+b+c+d)) (4) = (sqrt(p^2q^2-(a-b)^2(a+b-s)^2))/(2s), (5) ...
Search SavePageNow: запись веб-страниц на Arquivo.pt.
The ArchivePageNow service allows a page to be archived at the exact moment the user makes the request. The archived contents are later integrated in the Arquivo.pt collection.
Wayback imagery is a digital archive of the World Imagery basemap, enabling users to access different versions of World Imagery captured over the years. Each record in the archive represents World Imagery as it existed on the date new imagery was published. Wayback currently supports all updated versions of World Imagery dating back to February 20, 2014.
World map, satellite view // Earth map online service
🗺️ All world countries satellite map with labels, ruler, places sharing, search, locating, route planning, states boundary tracking, city list menu for each state, weather forecast
The superellipsoid is a generalization of the ellipsoid by allowing different exponents of the variables in the algebraic representation. It is similarly a generalization of the superellipse to three dimensions. The version called the superquadratic ellipsoid is defined by the equation (|x|^(2/e)+|y|^(2/e))^(e/n)+|z|^(2/n)=1, where e and n are the east-west and north-south exponents, respectively. This superellipsoid can be rendered in POVRay® with the command superellipsoid{...