Intellect PlusCards starting with S
3,033 cards. Page 15 of 51.
Securing your home with a DIY system is a manageable weekend project.Home technology expert Ross Trethewey demonstrates how to install a modern DIY security system. This guide covers the essential steps for setting up a hub, motion sensors, and a s…
Securities are the tradable financial assets that fuel modern global capital markets.Securities are more than just stocks and bonds; they are the primary mechanism enterprises and governments use to raise capital. Whether you are holding equity for control or debt…
Security engineering is not just software; it is the art of building resilient systems.Security engineering integrates protection into the very fabric of a system, rather than bolting it on as an afterthought. By blending social science, economics, and architecture,…
Sedatives do more than calm you; they fundamentally slow your central nervous system.Sedatives are prescription drugs that depress your brain and spinal cord, inducing relaxation or sleep. While they are essential for managing anxiety and facilitating medical proc…
Sedenions are 16-dimensional hypercomplex numbers that defy standard algebraic rules of multiplication.In the realm of abstract algebra, sedenions represent a 16-dimensional structure built from octonions. While they retain some familiar properties, they abandon the alternative alg…
Sedimentary rock covers most land yet makes up just 8 percent of the crustWalk across the continents and nearly three quarters of the exposed ground is sedimentary rock. Dig down, though, and it turns out to be a thin skin: only about 8 percent of the c…
Sedimentary structures are the three-dimensional physical fingerprints of ancient environments preserved in rock.Geologists read sedimentary rocks like a history book, using physical features to reconstruct vanished landscapes. From ripple marks left by ancient tides to mud cracks formed und…
Sedna is a frozen fossil from the dawn of our solar systemDiscovered in 2003, the dwarf planet Sedna orbits the Sun in a path so extreme it takes 11,400 years to complete. This mysterious object, coated in reddish organic sludge, sits fa…
See Mars through the eyes of the Perseverance rover in stunning high-definition detailJoin NASA project scientist Ken Farley for a guided tour of the Jezero Crater. Using high-resolution imagery from the rover's Mastcam-Z instrument, this video explores the geologi…
See the Artemis II launch through the lens of thermal imaging technologyExperience the launch of the Space Launch System rocket in infrared. This footage captures the intense heat signatures of the vehicle as it departed for a historic crewed mission,…
See the hidden architecture of the crops that feed AustraliaExperimental scientist Dr. Phil Hands reveals the unseen world of common food and crops. Filmed at the Black Mountain Microimaging Centre, this segment explores the intersection o…
See the hidden mechanics of a carburetor captured at 28,546 frames per second.This video uses a transparent carburetor to visualize how fuel and air mix inside an engine. By filming at 28,546 frames per second, it reveals the internal processes that are usu…
Seed shrimp rule the arthropod fossil shelvesOstracods, nicknamed seed shrimp, are crustaceans with roughly 33,000 described species—only about 13,000 still living. Greek ostrakon means shell or tile. They are by far the mos…
Seeds are not just dormant; they are waiting for the perfect environmental signal.Germination is the remarkable reactivation of a seed's metabolic machinery. Far from being passive, seeds act as sophisticated sensors, waiting for precise cues like light, temper…
Seeds packaged plant embryos for a drier planetA botanical seed wraps an embryo and food stores inside a testa coat; loosely, anything sown can be called seed. Seed plants define themselves by this package, while ferns and mos…
Seeing hue means comparing light frequenciesColor vision is the knack of telling lights apart by frequency mix, not merely by brightness. Photoreceptor types fire differently, then layered neurons build a hue. Newton showed…
Seeing hue means comparing light frequenciesColor vision perceives differences between lights of different frequencies independent of intensity
Seeing inside your walls: The high-tech way to diagnose plumbingWhen a home's main plumbing stack fails, guessing is expensive. Watch as expert Richard Trethewey uses specialized camera technology to inspect the hidden infrastructure of a hist…
Seeing is the brain inventing a world from bouncing lightVisual perception is the knack of detecting light and building an image of the surroundings—more than bare light sensing. In most vertebrates it runs in photopic daytime and scoto…
Seeing our changing planet through the lens of space technologyFormer astronaut and geologist Kathy Sullivan discusses how satellite technology allows us to observe Earth's evolution from multiple perspectives. This conversation highlights wh…
Seeing Saturn through heat: the infrared discoveries of the Cassini missionThis video explores the greatest hits of the Composite Infrared Spectrometer (CIRS), an instrument that studied the Saturn system through heat radiation to uncover hidden worlds a…
Seeing the invisible: how data visualization reveals our universeHuman senses are limited, but technology allows us to perceive the hidden complexities of our cosmos. This video showcases high-definition visualizations that transform raw scient…- Seeing the invisible: how X-rays reveal the universe's hidden architectureMost telescopes only see what is visible to the human eye. This video explores how the Chandra X-ray Observatory reveals a hidden cosmos, from the formation of massive galaxy clus…
Seeing the museum through the lens of wearable technologyExperience a tour of the Richard Gilder Graduate School through the eyes of a doctoral student using Google Glass. This video offers a unique, hands-free perspective on life withi…
Seeing the same family doctor over years is linked to lower death ratesGeneral practitioners are the generalists of medicine, handling almost anything that walks in and deciding who needs a specialist. Their secret weapon is time: studies show that s…
Seeing the Sun's Inner Workings: How Proximity Reveals Space Weather ThreatsNASA's Parker Solar Probe achieved a record-breaking pass, capturing unprecedented views from within the Sun's outer atmosphere. These images, taken closer than ever, are fundamen…
Seeing the universe through a different lens: the Magellanic Clouds in ultravioletWitness the most detailed ultraviolet surveys of our nearest neighbor galaxies. This video showcases seamless portraits of the Large and Small Magellanic Clouds, revealing a hidde…
Seeing the world through a different geographic lensExplore the surprising overlaps in global geography. This tour examines how places can be much different than their names suggest, from unexpected American landscapes to European …- Seeing through the cosmic dust with a flying telescopeHow do you see the birth of stars hidden behind thick clouds of space dust? By taking a telescope into the stratosphere. NASA's SOFIA observatory bypasses Earth's atmosphere to ca…
Seeing through the storm: why radar is essential for Earth observationStandard satellite imagery can be blinded by clouds or darkness. This video explains how Sentinel-1 uses advanced radar technology to provide a constant, all-weather view of our p…
Seeking support for alcohol use is a brave and accessible step toward recovery.Alcohol consumption can lead to complex challenges for individuals and their families. This resource guide provides direct access to professional support systems and community-bas…
Seesaws, tweezers and the bones in your ear all obey one ruleA lever is nothing more than a rigid bar turning on a pivot, yet it lets a small push lift a heavy load. The trade is distance: the end you press travels further than the end doin…
Sega's last console shipped a modem in every box and still floppedThe Dreamcast was the first console with a built-in modem for online play, an idea Sega's own staff resisted over the extra $15 per machine. It launched before the PlayStation 2, …
Sega's Shinobi series defined the ninja archetype in gaming for nearly four decadesSince its 1987 arcade debut, the Shinobi series has stood as a hallmark of Sega's technical prowess. Famous for its punishing difficulty and iconic protagonist Joe Musashi, the fr…
Segmented worms rewrite their own family treeAnnelida—the little-ring phylum—holds more than twenty-two thousand living species, from earthworms and leeches to vent-dwelling polychaetes. Textbooks still recite polychaetes, o…
Seiko's quartz watch cost as much as a car and shook SwitzerlandOn sale in 1969, Seiko's Astron was the first quartz wristwatch anyone could buy, and it was priced about the same as a mid-sized car. Quartz soon became cheap, and the shift it b…
Seismic data from Mars reveals a crust with varying possible thicknessesResearchers analyzing seismic data from the InSight lander have determined the internal structure of the Martian crust beneath its landing site. By studying marsquake recordings a…- Seismic data from Mars reveals a large liquid core and thick crustResearchers analyzing marsquakes detected by the InSight mission's seismometer have mapped the interior of Mars. The study found that the planet possesses a large, liquid core app…
Seitan sounds modern, but Chinese cooks were making wheat meat in 535The name seitan was coined in Japan in 1961, yet the food itself is ancient. Chinese cooks were washing the starch out of wheat dough to leave a chewy, meat-like protein at least …- Seiun Sky: The Devious Thoroughbred Who Mastered the Art of the Front-Running VictorySeiun Sky was a Japanese Thoroughbred who defied expectations by dominating major races through calculated, front-running tactics. Rather than relying solely on raw speed, he ofte…
Seizures range from a blank stare to full convulsions, and neurologists sort them by originNot every seizure looks like the dramatic convulsions of film and television. Some are a few seconds of vacant staring, a sudden smell that isn't there, or an overwhelming sense o…
Seki Takakazu: The Samurai Mathematician Who Anticipated Newton and LeibnizLong before Japan opened to the West, Seki Takakazu revolutionized mathematics in isolation. Known as the Arithmetical Sage, he independently discovered determinants and Bernoulli…
Selecting the ideal pavers for your outdoor patio, walkway, or driveway projectMason Mark McCullough guides host Kevin O'Connor through the variety of paving materials available for residential outdoor spaces. This overview helps homeowners understand their …
Selecting the right interior molding to define the character of your home's rooms.General contractor Tom Silva explains the variety of molding options available for interior trim. This guide helps you navigate the selection process to effectively finish a room,…
Selecting the right wood filler for every repair, from interior trim to exterior gaps.General contractor Tom Silva explains how to choose the correct material for plugging holes and cracks in wood and PVC. This guide covers the best options for painted surfaces, st…
Selective mutism is an involuntary anxiety disorder, not a choice to remain silent.Often mistaken for extreme shyness or defiance, selective mutism is a persistent anxiety disorder where individuals are physically capable of speech but feel unable to speak in sp…
Selena learned Spanish phonetically to sing Tejano music, then became its queenThe Queen of Tejano Music grew up speaking English and wanted to record English songs. Her father insisted she sing in the Spanish-language style of her heritage, so she learned t…
Selene: The Ancient Greek Goddess Who Was More Than Just the MoonIn Greek mythology, Selene was the personification of the Moon, a celestial figure who drove a chariot across the heavens. While often sidelined by later deities, she was a powerf…
Seleucia on the Tigris: The Hellenistic Metropolis That Once Rivaled Rome and AlexandriaFounded by Seleucus I Nicator as an eastern capital, Seleucia on the Tigris became a massive center of trade and culture. It flourished under both Seleucid and Parthian rule, hous…
Seleucus built a Greek empire from Babylon to the LevantAfter Alexander's death, Macedonian general Seleucus I Nicator founded a Hellenistic state in 312 BC. From Mesopotamian bases it sprawled across lands now called Iraq, Iran, Afgha…
Seleucus founded Antioch as a Hellenistic frontier capitalAntioch, beneath today’s Antakya in Turkey, was founded in 300 BCE by Seleucus I Nicator on the Orontes in the fertile Amuq plain. It became the Seleucid capital, a Roman and Byza…
Self-control may be the most teachable lever for national prosperityWhile intelligence and wealth are often seen as the primary drivers of success, they are difficult to change. Research suggests that childhood self-control is a distinct, potentia…
Self-replication is the fundamental engine of life, but it is also an engineering frontier.From the DNA in your cells to the code in a computer virus, self-replication is the process of creating an identical or similar copy of oneself. While nature has perfected this th…
Self-reported physical activity levels often disagree with direct objective measurementsA systematic review of 187 studies found that how people report their own physical activity often fails to match direct measurements. Researchers observed that correlations betwee…
Selhurst Park rose on a former brickfield bought for £2,750Crystal Palace paid a railway company £2,750 in 1922 for an old brickfield in Croydon. Two years later Archibald Leitch's new stadium opened with just one unfinished stand, delaye…
Seljuk Turks turned Manzikert into Anatolia’s open doorFounded in 1037 by brothers Tughril and Chaghri, the Great Seljuk Empire stretched some 3.9 million square kilometres of Turco-Persian power. Their 1071 triumph at Manzikert crack…
Sellafield: The century-long cleanup of Britain's most complex nuclear legacy siteEurope's largest nuclear site, Sellafield, began as a secret World War II munitions factory before becoming the engine of Britain's atomic weapons program. Today, it faces a monum…
Selling arms to Iran to fund Nicaraguan rebels: the Iran-Contra affair explainedWhile publicly urging the world not to arm Iran, senior Reagan administration officials were secretly selling it weapons, partly to win freedom for American hostages in Lebanon, a…
Selling to a company works almost nothing like selling to youBuy a sofa and you likely pay the sticker price, decide alone and take it home. A business buying office chairs haggles, runs the order past accounting, quality control and logist…
Selznick feared Bergman's German-sounding name and thick eyebrowsWhen Ingrid Bergman reached Hollywood in 1939 for Intermezzo, producer David O. Selznick worried she was too tall, spoke little English, and looked insufficiently glamorous. He or…