Intellect PlusCards starting with E
1,803 cards. Page 21 of 31.
Euler's identity ties e, i, and π in one equationEuler's identity equates e raised to i times π, plus one, with zero—or writes the same relation as e to the i-π equals minus one. Named for Leonhard Euler, it is the π case of his…
Euler's V−E+F equals two for every convex polyhedronThe Euler characteristic is a number describing a shape's structure that stays the same however the shape is bent. For a polyhedron's surface it is vertices minus edges plus faces…
Eunapius: The Last Chronicler of the Pagan Philosophers of Late AntiquityBorn in Sardis around 347 AD, Eunapius was a rhetorician and historian who captured the fading world of Neoplatonism. His biographies of 24 philosophers remain our primary window …
Eunomia: The Ancient Greek Goddess Who Bridged the Gap Between Legislation and Green PasturesIn Greek mythology, Eunomia was far more than a personification of good order and governance. As a daughter of Zeus and Themis, she represented the stability of society, the chang…
Euphrosyne: The Ancient Greek Goddess Who Personified the Very Essence of MirthIn the tapestry of Greek mythology, Euphrosyne stands as a radiant figure of joy and good cheer. As one of the three Graces, she was tasked with filling the world with pleasant mo…
Euripides made mythical heroes feel painfully ordinaryAlongside Aeschylus and Sophocles, Euripides (c. 480–c. 406 BC) is one of three classical Athenian tragedians with plays still ascribed by name. He cast legendary figures as every…
Euronext's family tree reaches back to a Bruges bourse of 1285Europe's biggest stock exchange group formed only in 2000, but its roots stretch back more than seven centuries. It traces its lineage to trading hubs in Bruges in 1285, Antwerp i…
Europe and Asia meet along a sturgeon riverThe Ural—once called the Yaik—runs from the southern Urals through Russia and Kazakhstan into the Caspian Sea. Most authorities treat its entire length as the Europe–Asia boundary…
Europe completes its first generation of high-precision satellite navigation technologyThe final satellite of the Galileo First Generation series has departed the European Space Agency's testing facility. This milestone marks the conclusion of a two-decade developme…
Europe entered the 1600s without calculus or telescopes and left it with bothEuropeans started the 1600s with no telescope, microscope, calculus or law of gravity. By 1700 they had all four, plus logarithms, air pressure and calculating machines. The same …
Europe finally launches Ariane 6, overcoming years of delays and launcher shortages.After missing its original 2020 target, Europe has successfully launched the Ariane 6 rocket. This video examines the project management struggles and the critical loss of alterna…
Europe grabbed nearly all of Africa in one generationAs late as the 1870s, European flags covered only about a tenth of Africa, mostly coastal footholds. By 1914 Ethiopia and Liberia alone still stood outside formal European rule. S…
Europe had beans for millennia before the ones most people eat todayThe word bean was in West Germanic speech before the 12th century, naming broad beans and chickpeas. Then the Columbian exchange delivered Phaseolus, the American genus behind mos…- Europe had beans long before the common bean arrived from the AmericasThe beans ancient Greeks and Romans ate were Asian species, unrelated to the common bean whose seeds and green pods fill markets today. When Phaseolus vulgaris crossed the Atlanti…
Europe hailed Marian Anderson's voice while American hotels turned her awayJean Sibelius was so moved after hearing her sing in Helsinki that he told his wife to serve champagne instead of coffee. Arturo Toscanini said a voice like hers came along once i…
Europe holds more than 35,000 prehistoric structures built from giant stonesFrom Sweden to the Mediterranean, over 35,000 megalithic monuments dot Europe, and the tradition is far older than Stonehenge. Carved pillars at Göbekli Tepe in Turkey date to aro…- Europe is a continent defined more by its complex peninsulas than by rigid bordersEurope is not a simple landmass but a vast, interconnected collection of peninsulas and islands. While often viewed as a distinct continent, its geography is defined by a striking…
Europe is bringing satellite navigation closer to EarthOn 28 March, the ESA launched the Celeste mission, a pioneering project designed to test how low Earth orbit can transform our global positioning, navigation, and timing capabilit…
Europe is building a gravitational wave telescope with arms millions of kilometers longThe Laser Interferometer Space Antenna, or LISA, is a trio of spacecraft designed to function as a single, massive telescope in deep space. By operating at lower frequencies than …
Europe is building a hypersonic spaceplane that takes off from a standard runwayThe INVICTUS research program aims to master reusable, air-breathing propulsion for vehicles that launch horizontally. By integrating advanced cooling systems capable of chilling …
Europe is building its own path to the Moon with the autonomous Argonaut landerWhile Europe provides critical life support for NASA’s Artemis missions, it is simultaneously developing Argonaut. This autonomous lunar lander will deliver cargo to the Moon’s su…
Europe is building the powerhouse that will carry astronauts back to the MoonThe Artemis programme relies on a critical piece of European engineering: the Service Module. This unpressurised cylinder provides the propulsion, life support, electricity, and t…
Europe is redefining its roadmap for the final frontierThe European Space Agency is unveiling the European Exploration Envelope Programme (E3P). This video outlines a strategic shift in how Europe plans to conduct human and robotic ex…
Europe is upgrading its global satellite navigation network with a powerful new generation.The European Space Agency is developing the Galileo Second Generation, a fleet of advanced satellites designed to improve the precision and reliability of the world's most accurat…
Europe is warming faster than any other continent, with temperatures rising over 2 °C.Europe is currently the fastest-warming continent on Earth, with temperatures already 2.3 °C above pre-industrial levels. This rapid shift is fueling extreme heatwaves, devastatin…
Europe launches next-generation weather satellite to secure two decades of climate dataThe MetOp-SG-A1 satellite has launched on an Ariane 6 rocket, marking the start of a new era for European weather forecasting and climate monitoring. This mission provides enhance…
Europe met “Japan” through Chinese tongues, not Yamato speechJapan’s archipelago faces the Pacific off northeast Asia, edged by the Sea of Japan, Okhotsk, and East China Sea. Locals say Nihon or Nippon for 日本, yet English “Japan” arrived …- Europe prepares its new heavy-lift rocket for its inaugural launch from French GuianaThe European Space Agency is entering the final phase of development for Ariane 6. This video covers the ongoing preparations at the launch base in French Guiana and across variou…
- Europe restores independent access to space with Vega-C return to flightWatch the highlights from the December 2024 launch of the Vega-C rocket, which successfully deployed the Sentinel-1C satellite from French Guiana to enhance Earth observation.
Europe welcomes its first Patagotitan mayorum, a dinosaur of truly staggering proportions.Professor Paul Barrett and exhibition lead Sinaéd Marron offer an exclusive look at the Natural History Museum's latest exhibit. This display marks the European debut of the Patag…- Europe's 'Martian Year': A pivotal era for deep space explorationFrom landing modules on Mars to chasing comets, 2016 marked a high-tempo period of achievement for the European Space Agency. This summary captures the momentum of Europe's most a…
- Europe's 2013 space roadmap: From magnetic fields to orbital logisticsExplore the European Space Agency's ambitious 2013 calendar. This video outlines a year of critical infrastructure, human spaceflight, and new environmental monitoring technologie…
Europe's 2023 space agenda: from Jupiter missions to the inaugural Ariane 6 flightThe European Space Agency outlines a busy 2023, focusing on independent access to space, new satellite technology, and major scientific exploration. This overview highlights the k…
Europe's adder ranges farther north than any snakeVipera berus, the common European adder, stretches from Britain to Sakhalin and crosses the Arctic Circle—farther north than any other snake. Folklore paints it as a devilish vill…- Europe's ancient beech woodlands are a living map of post-ice age forest recoverySpanning 18 nations, a massive network of protected European beech forests offers a rare, undisturbed look at how nature reclaimed the continent after the last ice age. These site…
Europe's biggest financial centres both sit outside the European UnionThe European Union is the world's second-largest economy by nominal output, behind only the United States, yet the continent's two largest financial hubs, London and Zürich, lie b…
Europe's blue flag with gold stars was designed for a different organisationThe circle of gold stars that flies over Brussels was created in 1955 for the Council of Europe, a separate body based in Strasbourg. The European Union later borrowed both the fl…
Europe's busiest shopping street was once the road to the gallowsAround 300,000 people a day walk Oxford Street, Europe's busiest shopping street. For centuries it was Tyburn Road, the route condemned prisoners took from Newgate to the Tyburn g…
Europe's champions skip straight to the final of FIFA's newest club tournamentIn FIFA's Intercontinental Cup, the club champions of five confederations battle through a ladder of play-offs, each with its own trophy, for the right to meet Europe's champion, …
Europe's classic stag is really a species complexRed deer (Cervus elaphus) rank among the largest deer; males are stags or harts, females hinds. Fourth-largest living deer after moose, elk, and sambar, they ruminate with four-ch…- Europe's collective ownership of one of the world's leading space agenciesDiscover how 500 million citizens across 20 nations co-own a global leader in space exploration. This video introduces the European Space Agency (ESA) as a cooperative organizatio…
Europe's disputed roof rises 5,642 metres between two seasMount Elbrus tops the Caucasus at 5,642 metres—832 metres above Mont Blanc—yet whether it counts as Europe's highest peak depends on where you draw the continent line. The range i…
Europe's expanding algae industry focuses primarily on food and high-value supplementsResearchers who mapped 447 production units across 23 European countries found that the continent is developing a diverse algae bioeconomy. The study revealed that over half of th…- Europe's fallow deer are mostly Turkish imports moved by Roman tradeFallow deer graze in parks across Britain and Europe as if they had always been there. Genetics tells another story. A 2024 study found most descend from a population that survive…
Europe's fifth-longest river once marked Asia for the GreeksFrom Novomoskovsk near Tula, the Don winds 1,870 kilometres to the Sea of Azov—Europe's fifth-longest river and a Byzantine trade artery. Some ancient Greek geographers treated it…
Europe's first advanced civilisation rose on Greece's largest islandMinoan Crete flourished from about 2700 to 1420 BCE—Europe's earliest complex civilisation—before Mycenaeans, Romans, Byzantines, Venetians, and Ottomans took turns. Today the isl…
Europe's first farmers set out from the shores of the AegeanBefore 5000 BC, Neolithic farmers from Greece were carrying agriculture westward across Europe, one branch up the Danube and another along the Mediterranean to Iberia and eventual…- Europe's first lasting modern humans were named after a railway roadworks findIn 1868, workers cutting a road toward a railway station in the Dordogne stumbled on a rock shelter. Inside, Louis Lartet found five skeletons, and the spot's name, Cro-Magnon, be…
Europe's first modern humans carved flutes from vulture bones 35,000 years agoIn a German cave in 2008, archaeologists found a flute made from a vulture's wing bone, pierced with five finger holes and roughly 35,000 to 40,000 years old, the oldest undispute…
Europe's first orbital rocket launch attempt ends in a rapid, nearby splashdown.Isar Aerospace recently attempted the first orbital launch from European soil. The mission ended abruptly when the booster lost control seconds after liftoff, crashing into the wa…
Europe's first permanent laboratory in the vacuum of spaceExperience the interior of the International Space Station's Columbus module through a 360-degree panorama. This immersive look explores Europe's largest contribution to the stati…
Europe's first universities were guilds nobody officially authorisedNo king or pope founded the earliest European universities. According to the historian Hastings Rashdall, they formed on their own as guilds of teachers or students, part of an ur…
Europe's Galileo: A sovereign eye in the sky for global navigationBeyond simple GPS, Europe's Galileo system provides a diverse suite of high-performance services. From free smartphone navigation to encrypted signals for government use, this ind…- Europe's heavy-lift rocket just achieved its most powerful launch to dateWitness the assembly and liftoff of Ariane 6, Europe's versatile heavy-lift launcher. This timelapse captures the integration of its core and upper stages with four upgraded boost…
Europe's Ice Age hunters had dark skin, light eyes, and live on in modern DNAAfter the glaciers retreated, a population of hunters spread across Europe from Britain to the Carpathians. Ancient genomes suggest they probably had dark skin and pale eyes, lack…- Europe's independent leap into global satellite navigationWatch how Europe moved from experimental test satellites to a functional constellation, securing its own sovereign position in the global navigation landscape.
Europe's independent navigation system is entering its next phaseWatch as the European Space Agency prepares to expand its global positioning infrastructure. This video details the current operational status of Galileo and the upcoming launch o…- Europe's independent navigation system reaches a critical deployment milestoneThe Galileo satellite constellation is moving from testing to reality. This video provides an update on the launch campaign and explains why these specific satellites are vital fo…
Europe's largest alumina refinery sits at the center of a complex geopolitical and environmental storm.Located on Ireland's Shannon Estuary, Aughinish Alumina is a massive industrial facility that refines bauxite into alumina. While it serves as a critical node in European supply c…
Europe's largest palace burned down because of drying laundryWith more than 1,500 rooms, Whitehall was once the biggest palace in Europe and home to English monarchs for almost 170 years. In January 1698 a servant hung wet linen around a ch…