Non-Euclidean worlds rendering engine In geometry, Euclidean space encompasses the two-dimensional Euclidean plane, the three-dimensional space of Euclidean geometry, and similar spaces of higher dimension. It is named after the Ancient Greek mathematician Euclid of Alexandria.[1] The term "Euclidean" distinguishes these spaces from other types of spaces considered in modern geometry. Euclidean spaces also generalize to higher dimensions.
A day in the life of an ancient Athenian It’s 427 BCE, and the worst internal conflict ever to occur in the ancient Greek world is in its fourth year. Athens is facing a big decision: what to do with the people of Mytilene, a city on the island of Lesbos where a revolt against Athenian rule has just been put down. How did these kinds of decisions get made? Robert Garland outlines a day in the life of Athenian democracy.
Primitive Technology: Natural Draft Furnace I built a natural draft furnace to test ideas about how hot a furnace could get without the use of bellows. Natural draft is the flow of air through a furnace due to rising hot air. The hot gasses in the fuel bed are more buoyant than the cold air outside the furnace causing them to rise. Fresh combustion air then enters the base of the furnace to replace the rising combustion gasses, keeping the fuel bed burning. This effect increases with: 1. the average temperature of the fuel bed relative to the outside air and 2. The height of the furnace. Two other important factors are the size of the tuyere (air entry pipe) and lump size of the fuel bed as these effect the resistance to airflow through the furnace. The furnace was tested with wood fuel and some ore was melted but produced no iron. High temperature were indeed produced (probably about 1200 c). These types of furnaces were once used for smelting copper and iron ores in around the world in ancient times, usually using charcoal as a fuel and in some cases wood too.
Colossus of Rhodes Project Colossus of Rhodes PROJECT. A european initiative to revive one of the seven wonders of the ancient world. This project originates from the ideas, the expectations and the hopes of some young professionals coming from various european countries: Greece, Spain, Italy and United Kingdom. The determined aim is very ambitious: to rebuild the Colossus of Rhodes, the God of Sun, taking into consideration the modern standards. The purpose of the project is not to propose a copy of the original, bronze, 40 meters high structure, but to arouse the same emotions that visitors felt, more than 2200 years ago........http://colossusrhodes.com
Duo dance to Stayin’ Alive Funkanometry duo Jacksun Fryer and Carlow Rush dance in the streets of San Diego to the Bee Gees' song Stayin' Alive. Both men are from Vancouver Island in Canada. They competed on NBC's World of Dance in 2020 and America's Got Talent in 2022
Αγώνας drag μεταξύ F1, MotoGP, Rallycross, WRC και ηλεκτρικού Supervan Ποιος κερδίζει έναν αγώνα επιτάχυνσης μεταξύ ενός μονοθέσιου της Formula 1, μιας μοτοσικλέτας MotoGP, ενός αυτοκινήτου WRC, ενός αυτοκινήτου World Rallycross και ενός ηλεκτρικού Ford SuperVan; Η Red Bull έστησε τον πιο τρελό αγώνα drag.
Ο σκύλος στον καθρέφτη Ένα εντυπωσιακό νούμερο από μια γυναίκα και τον εκπαιδευμένο σκύλο της, στον τελικό του διαγωνισμού 2019 FCI DogDancing World Championship.
One of the biggest computational fluid dynamics simulation made on a super computer This is one of the largest CFD simulations ever, on the world's largest GPU server, the GigaIO SuperNODE, equipped with 32x AMD Instinct MI210 64GB GPUs, for a total of 2TB of VRAM. The simulation shows the Concorde (62m long) before landing at a speed of 300km/h and an angle of attack of 10°, for 1 second in flight. The span-based Reynolds number is 146 million.