Intellect PlusCards starting with S
3,033 cards. Page 46 of 51.
Su Song built a 40-foot clock tower nobody could rebuildIn 11th-century Kaifeng, Su Song crowned a water-driven tower with a rotating bronze armillary sphere turned by the oldest known endless chain drive. When the capital fell and the…
Sub-Saharan Africa’s driest country mines diamonds sparselyNamibia, Southern Africa’s Atlantic republic, borders Angola, Zambia via the Caprivi Strip, Botswana, and South Africa, with Zimbabwe less than 200 metres away near Kazungula. The…
Subaru uses four distinct all-wheel drive systems to balance traction, performance, and efficiency.Subaru does not rely on a single all-wheel drive solution. Instead, the manufacturer engineers four unique systems, each tailored to specific transmission types and driving goals.…
Subatomic particles can spontaneously transform into their own opposites or entirely different identitiesIn the quantum realm, neutral particles are not always what they seem. Through a process called oscillation, they can transmute into antiparticles or shift between different flavo…
Subduction is the engine of Earth, recycling our planet's crust into its fiery interior.Subduction is the geological process where heavy oceanic plates dive beneath others, sinking into the mantle. This recycling mechanism drives plate tectonics, creates most of our …
Subdwarfs are ancient stellar relics that reveal the early history of our galaxySubdwarfs are not just small stars; they are cosmic time capsules. Defined by their low metallicity and ancient origins, these objects belong to the Milky Way's oldest structures.…
Subgiants are the fleeting middle-aged stars caught between their main sequence and giant phases.A subgiant is a star that has outgrown its main sequence life but has not yet fully blossomed into a giant. These stars are brighter than their main sequence counterparts yet dimm…
Subhas Chandra Bose passed the elite civil service exam, then refused the jobSubhas Chandra Bose sailed to England at his father's urging and did brilliantly in the crucial first Indian Civil Service exam. He then declined the routine final test, calling n…
Subhūti: The Disciple Who Mastered Emptiness and Redefined the Art of GivingKnown as the disciple foremost in understanding emptiness, Subhūti remains a central figure in Mahayana Buddhism. From his legendary alms rounds to his role in the Diamond Sūtra, …
Submersible robots allow us to explore the ocean without ever getting wetRemotely operated vehicles, or ROVs, are tethered robots that act as our eyes and hands in the deep sea. From laptop-sized units to heavy-duty industrial machines, these submersib…
Subsidies quietly swallow over half of what many rich governments spendCheaper bus fares, discounted first units of electricity, tax breaks for clean energy: governments constantly nudge prices with public money. Across OECD countries in 2020, subsid…
Substantive law defines your rights, while procedural law dictates how you enforce them.Ever wonder why the law feels like a maze? It is because our legal system is split in two. Substantive law sets the rules for how we behave and what we are owed, while procedural …
Substations are the essential control centers keeping our continental power grid in perfect synchrony.This video breaks down the complex equipment found in electrical substations. It explains how these facilities manage the diverse energy demands of users while maintaining the sta…
Substellar objects appear much bluer than expected due to complex atmospheric absorptionResearchers using new nongray calculations found that extrasolar giant planets and brown dwarfs exhibit much bluer infrared colors than scientists previously believed. By modeling…
Subutai conquered more territory than any other commander in historyA blacksmith's son who joined Temujin's army at 14, Subutai became the chief strategist of Genghis Khan and Ogedei. Across more than 20 campaigns he took more land than any genera…
Subversion is the art of dismantling a nation from within without firing a shot.Unlike war or diplomacy, subversion operates in the shadows to erode a state's power. It functions like a virus, infiltrating institutions and manipulating public morale to weaken…
Subway began with a borrowed thousand dollars meant to fund medical schoolIn 1965 Fred DeLuca borrowed $1,000 from family friend Peter Buck to open a sandwich shop in Bridgeport, Connecticut, hoping it would pay his way through medical school. He never …
Success in professional modeling relies less on your look and more on your team dynamic.Stepping onto a professional set for the first time can be overwhelming, but the secret to longevity isn't just posing. It is about mastering the art of collaboration. Learn why t…
Success is defined by the metrics you choose to countHotelier Chip Conley explores how shifting our definition of success from profit to happiness can fundamentally change our lives. This video examines how prioritizing joyful exper…
Succulents are not a single plant family, but a masterclass in survival engineeringSucculents are defined by their fleshy, water-storing tissues, yet they are not a specific taxonomic group. Found on every continent except Antarctica, these plants have evolved d…
Sudan: A complex history of ancient civilizations and modern struggles in Northeast AfricaAs Africa's third-largest nation, Sudan holds a deep history spanning from prehistoric cultures to the world's earliest known conflict. Today, it remains a land defined by its vas…
Sudan's independence was won without a shot, but inherited a fractured peaceIn 1956, Sudan achieved sovereignty from British and Egyptian rule through parliamentary consensus rather than combat. Yet, this peaceful transition masked deep-seated structural …
Sudan’s civil war has created the largest displacement crisis in recent historySince April 2023, a brutal power struggle between Sudan’s military and a powerful paramilitary group has devastated the nation. With over 14 million people displaced and famine sp…
Sudanese music is a unique rhythmic crossroads where ancient traditions meet modern global sounds.For centuries, Sudan has served as a cultural bridge between Africa, the Arab world, and the Sahel. From the pentatonic scales of ancient Nubian roots to the electric guitars of t…
Sudden Arrhythmic Death Syndrome: Why Healthy Young People Die Without WarningSudden Arrhythmic Death Syndrome is the unexpected loss of life in individuals with no clear cause found during post-mortem exams. It is the leading cause of death for people unde…
Sudden Infant Death Syndrome remains a leading cause of mortality in infants under one year.While the exact cause of Sudden Infant Death Syndrome remains unknown, researchers have identified critical environmental triggers. By understanding the risks associated with slee…
Sue Grafton's alphabet mystery series will never reach Z, ending permanently at Y.After years of writing screenplays, Sue Grafton channeled her bitter divorce fantasies into the Kinsey Millhone series. While she planned to conclude with Z Is for Zero, her death…
Sufjan Stevens once planned a musical odyssey to capture the spirit of every American state.Sufjan Stevens is a prolific multi-instrumentalist whose career spans lo-fi folk, electronica, and symphonic compositions. While he initially announced an ambitious Fifty States P…
Sugar frequency, not just amount, drives tooth decayCaries is not a mysterious rot—it is acids from plaque bacteria dissolving enamel, dentin, and cementum. By 2016 roughly 3.6 billion people had decay in permanent teeth. The earli…
Sugar Ray Robinson fought under a borrowed name and never gave it backAt 14, Walker Smith Jr. was too young for the amateur boxing card he needed, so he used the ID of a lad called Ray Robinson who had quit the sport. The name stuck. After a woman i…
Sugar was once a rare commodity, but it has fundamentally shaped human civilization.Sugar is now nearly impossible to avoid, yet its current ubiquity is a modern development. This video explores the long, influential history of sugar and how it has driven the dev…
Sugars coat your cells and can switch proteins on and offCarbohydrates are not just fuel in bread and pasta. Sugar chains decorate the outside of cells, help them recognise one another, guide how proteins fold, and in some cases act as …
Sui reunited China in decades—then Goguryeo broke itFrom 581 to 618 the Sui dynasty ended centuries of north–south split, dug the Grand Canal, and rebuilt walls and Luoyang. Failed wars on Goguryeo and ruinous projects sparked revo…
Suihua: A Deep Dive Into the Agricultural Heart of Heilongjiang ProvinceLocated on the Songnen Plain, Suihua is a prefecture-level city with a history stretching back over 10,000 years. Once a frontier region under the Heilongjiang General, it has evo…
Suining: A Sichuanese hub of ancient legend, modern transit, and culinary traditionNestled in the heart of the Sichuan Basin, Suining is a city of striking contrasts. It balances a deep-rooted spiritual heritage as the legendary home of Guanyin with a modern ide…
Sujatha: The Indian Screen Legend Who Mastered the Art of Subtle Emotional PortrayalBorn in Sri Lanka and rising to fame in Tamil cinema, Sujatha redefined the role of the heroine through restraint and nuance. From her breakout 1974 hit to her later iconic portra…
Sukarno, the trained architect who proclaimed Indonesia's independenceTwo days after Japan surrendered, Sukarno and Mohammad Hatta declared an independent Indonesia on 17 August 1945. The former engineering student, jailed for over a decade by the D…
Sukhumi: A Black Sea capital built on the ruins of an ancient Greek colonyPerched on the eastern shores of the Black Sea, Sukhumi is a city defined by its dramatic geography and turbulent history. Once a thriving resort destination, this capital of Abkh…
Sukkur: The Ancient Limestone Ridge That Became the Gate of SindhPerched on a limestone ridge along the Indus River, Sukkur has evolved from an ancient Harappan settlement into a modern industrial hub. Known as the Gate of Sindh, this city bala…
Suleiman ruled longest of all Ottoman sultans, and wrote poetry tooFor 46 years Suleiman commanded an empire of at least 25 million subjects, taking Belgrade and Rhodes and breaking Hungary at Mohács. Yet the sultan Europeans called Magnificent w…
Süleyman Demirel: The Shepherd Who Became the Father of Modern Turkish PoliticsRising from a humble childhood as a shepherd to become Turkey's longest-serving prime minister, Süleyman Demirel defined an era. Known as Baba, or Father, he navigated decades of …
Süleyman the Magnificent: Separating the historical reality from centuries of romanticized mythSüleyman ruled the Ottoman Empire for 46 years, transforming it into a global power. This discussion examines his reign, his complex rivalries, and the imperial project that defin…
Sulfate pollution has likely offset much of human-caused greenhouse warmingAn analysis of atmospheric sulfate aerosols — fine particles produced largely by human activity — found that they scatter sunlight and make clouds more reflective, which cools the…
Sulfide is the silent architect of deep-sea history and modern industrial decayFrom the vibrant yellow of cadmium pigments to the structural collapse of sewer systems, sulfides are everywhere. These versatile sulfur compounds act as both essential geological…
Sulfide minerals are the hidden inorganic foundation of our global metal supply chainSulfide minerals are inorganic compounds defined by their sulfur or disulfide anions. Beyond their chemical structure, these minerals serve as the primary source for many of the w…- Sulfide solid electrolytes stabilize near-pure silicon battery anodesResearchers built a battery anode made almost entirely of silicon, 99.9 percent by weight, and paired it with a sulfide solid electrolyte instead of a liquid one. The solid electr…
Sulfur hexafluoride is an industrial miracle that is also the world's most potent greenhouse gas.This colorless, odorless gas is an electrical engineer's dream, providing unmatched insulation for high-voltage power grids. Yet, its extreme chemical stability is a double-edged …
Sulfur is a shape-shifting element with more allotropes than almost any other substanceWhile carbon is famous for its diverse forms, sulfur is a close second. This element rearranges its atoms into complex rings, chains, and metallic structures depending on heat and…
Sulfur is the silent engine driving life, decay, and the chemistry of our planet.Sulfur is essential to all living matter, acting as a vital component of proteins and amino acids. Beyond biology, this element cycles through Earth's soil, water, and atmosphere,…
Sulfur is the tenth most abundant element in the universe and essential for life.Known since antiquity as brimstone, sulfur is far more than a pungent nuisance. This versatile element is a fundamental building block for proteins, vitamins, and cellular cofacto…
Sulfur trioxide is a volatile, corrosive powerhouse essential for modern industrial chemistry.Sulfur trioxide is a colorless, fuming compound that reacts violently with water to produce sulfuric acid. While it is a critical intermediate in manufacturing detergents and chem…
Sulla seized Rome by force, ruled as dictator, then simply resignedNo general of the late Republic before Lucius Cornelius Sulla had turned his legions on Rome itself and come out the winner. He purged his enemies, revived a dictatorship unused f…
Sultan Abdulaziz: The Ottoman Reformer Who Shifted From Western Modernization to Absolute Autocratic RuleSultan Abdulaziz began his reign as an admirer of Western progress, becoming the first Ottoman ruler to visit Europe. Yet, after the death of his reformist ministers and the defea…
Sultan Abdülmecid I attempted to modernize the Ottoman Empire through radical social and legal reforms.Ascending the throne at sixteen, Abdülmecid I inherited an empire in crisis. He launched the ambitious Tanzimat era, a sweeping reorganization aimed at integrating non-Muslim subj…
Sultan Agung conquered most of Java but lacked a navyIn three decades Sultan Agung turned the Central Javan kingdom of Mataram into the master of nearly all of Java. His one great failure came at Batavia, the Dutch East India Compan…
Sultan Ahmed III: The Calligrapher King Who Transformed the Ottoman Empire’s Cultural LandscapeAhmed III, an intellectual sultan who preferred poetry and calligraphy to military campaigns, presided over the Tulip Era. While his reign saw both significant territorial shifts …
Sultan Murad III: The Reclusive Ottoman Ruler Who Dreamt of Killing ThousandsMurad III was a scholarly, deeply religious sultan who rarely left his palace, yet his reign saw the Ottoman Empire reach its territorial peak. Behind his quiet, routine-driven li…
Sumatra's Rainforest Heritage: A Biodiversity Hotspot Under Constant Threat of DisappearingSpanning three national parks across the Bukit Barisan Mountains, the Tropical Rainforest Heritage of Sumatra is a vital sanctuary for rare species. Though inscribed as a UNESCO W…
Sumatra’s Srivijaya was rediscovered from Chinese diariesSrivijaya, a Malay power rooted on Sumatra, steered Southeast Asian seas and Buddhist learning from the seventh to eleventh centuries. Tang monk Yijing stayed six months in 671—ye…
Sumba is the last place on Earth where ancient megalithic traditions remain alive today.While most of the world views stone monuments as relics of a distant past, the people of Sumba continue to build roughly 100 new megalithic tombs every year. This Indonesian islan…