Intellect PlusCards starting with C
9,109 cards. Page 115 of 152.
Central Taiwan's basin city built to be a provincial capitalTaichung, Taiwan's second-largest special municipality with more than 2.86 million residents, fills a central basin once dotted with Indigenous hamlets. Planners raised it as Taiw…
Centripetal force is not a unique force but a functional roleUnderstand why objects move in circles without being pulled by a specific 'centripetal' entity. This video clarifies the mechanics of curved motion and how different physical forc…
Centuries of conflict as settlement pushed westFor almost three centuries, from the first 17th-century colonies to the end of the 1800s, European empires and then the United States fought Native American nations over land. Tri…
Centuries of conflict between Rome and Germanic tribes shaped the fall of an empireThe long-standing struggle between Roman forces and Germanic peoples evolved from early territorial clashes into a series of invasions that ultimately dismantled the Western Roman…
Centuries of conflict: The persistent, shifting nature of Anglo-French military historyThe history of Anglo-French relations is not defined by a single struggle, but by a sprawling, centuries-long series of wars. From the Norman Conquest in 1066 to the French Revolu…
Centuries of discovery culminate in a final look at the world of the microscopic.This video marks the series finale of Journey to the Microcosmos. It reflects on the long history of human curiosity regarding the unseen world and celebrates the community that h…
Centuries of rivalry and shifting borders define the Iran–Turkey relationshipFrom the 16th-century battles between the Ottoman and Safavid empires to modern proxy conflicts in Syria, the relationship between Iran and Turkey is a complex tapestry of histori…
Cephalization put brains and sensors up front earlyA head gathers brain, eyes, ears, nose, and mouth into one anterior unit for sensing and feeding. Bilaterian animals concentrated nervous tissue forward in a trend called cephaliz…
Cepheus: The Northern King Who Guards a Universe of Giants and Supermassive Black HolesNamed for a mythological king of Aethiopia, the constellation Cepheus is a celestial powerhouse. It hosts the prototype for pulsating variable stars, massive red supergiants that …
Ceramic engineering creates high-performance materials that survive where metals and polymers fail.Ceramic engineering is the science of creating inorganic, non-metallic objects, from bulletproof plates to space-age turbine blades. While traditional pottery uses similar methods…
Ceramic glaze is a sophisticated glass coating that transforms fragile clay into durable vessels.Beyond mere decoration, glaze is a functional chemical skin. By fusing silica and metal oxides at high temperatures, it seals porous earthenware, creates smooth surfaces, and enab…
Ceramic materials offer a safer, heat-resistant alternative for high-energy capacitorsA review of dielectric materials found that while polymer capacitors are effective at room temperature, they become unreliable above 100 °C. Researchers highlight that ceramics ar…
Cerebellum contains mirror-image maps of the human brain's functional networksResearchers who analyzed resting-state MRI data from 1,000 subjects found that the human cerebellum is organized into complex, orderly maps. The study revealed that most of the ce…
Cerebral palsy is common yet still has no known cureAbout 2.1 in every thousand live births involve cerebral palsy, the most common childhood movement disorder. Damage or disrupted development in motor-control brain regions—usually…
Ceres is a frozen embryonic planet hiding a massive reservoir of water-ice beneath its crust.Ceres is the largest object in the asteroid belt, yet it is not a planet. Once considered a mere asteroid, this dwarf planet is actually an embryonic world that never finished for…
Ceres was found on New Year's Day, then lost, then rescued by mathsGiuseppe Piazzi spotted a slow-moving point of light on 1 January 1801, fell ill, and watched it slip into the Sun's glare. Nobody could find it again until a 24-year-old Carl Fri…
Ceres was the Roman goddess who taught humanity the transformative power of agricultureLong before modern farming, the Romans looked to Ceres to explain the transition from wild foraging to settled civilization. As the divine architect of the grain cycle, she repres…
Ceres: The Texas-sized dwarf planet hiding a salty, icy secret in the asteroid beltNestled between Mars and Jupiter, the dwarf planet Ceres is far more than a simple asteroid. While its surface is dark and muddy, NASA’s Dawn mission revealed hundreds of mysterio…
Cerium dioxide serves as a versatile foundation for diverse industrial catalytic processesA review of cerium dioxide (ceria) highlights its evolution from a specific automotive component to a versatile material in modern chemistry. Researchers noted that while it has b…
CERN, the particle physics lab, grew out of a UNESCO meetingUNESCO is best known for World Heritage Sites, but its reach is stranger than that. A UNESCO gathering in Paris in December 1951 set in motion the European Council for Nuclear Res…
Certain bacteria act like living wires, potentially powering your devices in the future.Some unique bacterial species possess the ability to harness and transport electrons. This video explores how these microorganisms function as biological conductors and why they m…
Cerulean: From a chemist's lab to the color of the millenniumCerulean is more than a shade of blue; it is a chemical innovation that reshaped art history. Originally synthesized in the late eighteenth century, this stable, greenish-blue pig…
César Vallejo: The Peruvian Poet Who Predicted His Own Death on the Wrong DayCésar Vallejo is hailed as one of the 20th century's greatest poets, yet he published only two books in his lifetime. A life defined by political persecution, exile, and poverty, …
Cesare Borgia, the pope's son who inspired Machiavelli's The PrinceAt 18, Cesare Borgia was a cardinal of the Church, appointed the moment his father became Pope Alexander VI. Within five years he had resigned, taken a French dukedom and begun co…
Ceto: The Primordial Sea Goddess Who Mothered the Most Terrifying Monsters of Greek MythIn Greek mythology, Ceto is a primordial deity of the deep, born from the union of Gaia and Pontus. While her name literally translates to sea monster, she is far more than a gene…
Ceviche is cooked without heat, because acid unfolds proteins just like fireBoil an egg and the clear, runny white turns firm and opaque. Pour raw egg white into acetone and much the same thing happens, no stove needed. Latin American cooks exploit the sa…
Ceylon's first prime minister started out running a graphite mineD. S. Senanayake was a mediocre student and keen cricketer who managed his family's graphite mine and rubber estates. Jailed without charge for 46 days by British authorities in 1…
Cézanne built Cubism's bridge with stubborn Aix brushstrokesPaul Cézanne, 19 January 1839 to 22 October 1906, turned Post-Impressionist color planes into a new pictorial grammar between Impressionism and Cubism. Dealers laughed for decades…
Chad sits at the crossroads of ancient empires and shifting Saharan trade routesLandlocked in north-central Africa, Chad has served as a vital hub for cultural and linguistic exchange for millennia. From Neolithic cave dwellers to the sophisticated medieval k…
Chad Warner: The Rise and Turbulent Path of a Sydney Swans Midfield StarRecruited as the 39th pick in the 2019 AFL draft, Chad Warner quickly became a standout for the Sydney Swans. Known for his explosive impact and high-level midfield play, his care…
Chadwick Boseman was a master of historical transformation and a quiet, deliberate force.Before he became a global icon as Black Panther, Chadwick Boseman spent years honing his craft as a playwright and director. His career was defined by a relentless pursuit of dept…
Chael Sonnen: The Masterful Trash-Talker Who Never Won a Major MMA World ChampionshipChael Sonnen is widely regarded as one of the greatest talkers in mixed martial arts history, yet he remains a paradox: a top-tier contender who never secured a major world title.…
Chagall kept flying over Vitebsk for ninety-seven yearsJewish boys were barred from the ordinary high school, so young Moishe Shagal's mother handed the headmaster 50 roubles to let him in. Renamed Marc Chagall, the boy from near Vite…
Chagang Province: The Mountainous North Korean Stronghold Hidden From the World for DecadesOnce an isolated, rugged frontier, Chagang Province transformed into North Korea's industrial and military heartland. With 98 percent of its land covered in mountains, this provin…
Chai Ling: The Student Leader Who Hoped for Bloodshed to Awaken a NationChai Ling rose to prominence as a commander during the 1989 Tiananmen Square protests, eventually becoming a symbol of the movement. Yet, her legacy remains deeply polarized. Whil…
Chainsaws run on two-stroke engines because they work upside downA four-stroke car engine keeps its oil in a sump and depends on gravity. A two-stroke engine mixes its lubricating oil straight into the fuel, typically about one part oil to 32 o…
Chairil Anwar: The Rebellious Poet Who Redefined the Indonesian LanguageChairil Anwar, the central figure of the 1945 Generation, transformed Indonesian literature by shattering traditional verse with existentialist themes and raw, everyday language. …
Chairs stayed rare status seats until the sixteenth centuryA chair seats one person with legs, a seat, and a backrest in wood, metal, or synthetics, often padded. English chair comes via Old French from Latin cathedra and Greek kathedra. …
Chaka Khan scored the first R&B crossover hit with a rapper on itIn 1984 Chaka Khan covered an obscure Prince song from 1979, added a Stevie Wonder harmonica solo, and let Grandmaster Melle Mel open it with a rap. I Feel for You sold a million …
Chakotay remains the most prominent Native American character in the Star Trek television franchiseAs the first lead character of Native American descent in the Star Trek universe, Chakotay was designed to be an inspiring role model. Yet, his journey from a Maquis rebel to a St…
Chalcedony is a microscopic silica aggregate that has shaped human history for millenniaBeneath its waxy luster, chalcedony hides a complex internal structure of tiny, twisted silica fibers. While often mistaken for simple quartz, this mineral is a unique aggregate t…
Chaldea was a marsh tribe, not all of BabyloniaBetween the eleventh and ninth centuries BC, West Semitic Kaldu settled the southeastern marshes of Babylonia. Hebrew and Greek writers later stretched Chaldea across the whole so…
Challenges in protecting the world's living traditions through UNESCOResearchers analyzing UNESCO's efforts to protect living traditions found significant hurdles in implementing the 2003 Convention. By examining the management of the convention an…
Cham sea kingdoms lined Vietnam’s coast for 1,600 yearsChampa was not one kingdom but a string of Austronesian Cham polities along what is now central and southern Vietnam, lasting from roughly the second century until 1832. Hindu tem…
Chamber music is conversation among equalsChamber music fits a palace room: one player per part, no conductor-sized army. Goethe heard string quartets as “four rational people conversing,” and for more than a century amat…
Chameleon colour is mostly signalling, not camouflageChamaeleonidae counts about two hundred Old World lizard species famous for shifting hues. Skin stacks chromatophores and iridophore crystal lattices that change spacing to flip r…
Chameleons do not change color to hide; they use physics to signal their emotionsForget the myth that chameleons shift hues to blend into their surroundings. In reality, their baseline state is already camouflaged. When they change color, they are actually eng…
Chameleons use nano-crystals to actively tune their own colorsForget the myth of simple pigment shifts. This video explores how chameleons manipulate light at a microscopic level, using advanced physics to achieve their iconic transformation…
Chamonix 1924 invented the Winter OlympicsSnow and ice sports meet every four years under the International Olympic Committee—usually in a Northern Hemisphere February. The first edition, retroactively crowned later, was …
Chan Buddhism: A tradition defined by direct insight rather than written scripturesChan Buddhism emerged in China as a unique Mahayana tradition emphasizing direct, meditative insight into one's own Buddha-nature. While often associated with the legendary silent…
Chan Chan was the largest pre-Columbian city in South America, built entirely from mud.Spanning 20 square kilometers, this massive adobe metropolis served as the capital of the Chimor kingdom. Though it once housed up to 60,000 people, its intricate walls and royal …
Chanakya, India's legendary kingmaker, may never have written his famous bookTradition credits Chanakya, the Brahmin adviser who helped Chandragupta Maurya found an empire, with writing the Arthashastra, a classic manual of statecraft. Scholars now think t…
Chance became rigorous when Kolmogorov wrote axiomsGamblers asked first; physicists later found atoms behaving randomly. Probability theory turns that fog into a measure between zero and one on a sample space. Two classic theorems…
Chandler invented Marlowe after losing an oil jobRaymond Chandler (23 July 1888 – 26 March 1959) was forty-four, fired from a Depression-era oil executive post, when he taught himself pulp detective fiction. His first story hit …- Chandragupta Maurya built an empire yet left almost no trace of himselfChandragupta Maurya founded the first great empire of the Indian subcontinent around 320 BCE, yet nothing reliable survives about his birth, family or youth. Historians piece his …
Chandragupta Maurya reportedly fielded 9,000 war elephants at his heightAncient Indian writers said an army without elephants was as contemptible as a forest without a lion or a kingdom without a king. At the peak of the Maurya Empire, Chandragupta re…
Chanel began as a hat shop and freed women from the corsetIn 1909 Gabrielle Chanel began selling hats from a friend's Paris flat. Within a decade her loose jersey garments, borrowed partly from wartime uniforms, were on every European bu…
Chang'an's imperial palace covered nearly seven times the Forbidden City's areaThe Weiyang Palace in Chang'an sprawled across 4.8 square kilometres, the largest palace ever built. When the Han founder first saw his chancellor's enormous twin palaces, he scol…
Changde: The ancient Chinese city that may be the birthplace of rice cultivationNestled in the northwest of Hunan province, Changde is a city of profound antiquity. Beyond its modern high-rises and industrial prowess, it holds the potential title of the origi…
Change one rule of Euclid and parallel lines multiply without endEuclid's geometry says that through a point off a line, exactly one parallel can be drawn. Hyperbolic geometry keeps every other rule but allows at least two, and therefore infini…