Ettore Carruccio Isabel Quigly Popular Books
Ettore Carruccio Isabel Quigly Biography & Facts
An abacus (pl.: abaci or abacuses), also called a counting frame, is a hand-operated calculating tool which was used from ancient times in the ancient Near East, Europe, China, and Russia, until the adoption of the Arabic numeral system. An abacus consists of a two-dimensional array of slidable beads (or similar objects). In their earliest designs, the beads could be loose on a flat surface or sliding in grooves. Later the beads were made to slide on rods and built into a frame, allowing faster manipulation. Each rod typically represents one digit of a multi-digit number laid out using a positional numeral system such as base ten (though some cultures used different numerical bases). Roman and East Asian abacuses use a system resembling bi-quinary coded decimal, with a top deck (containing one or two beads) representing fives and a bottom deck (containing four or five beads) representing ones. Natural numbers are normally used, but some allow simple fractional components (e.g. 1⁄2, 1⁄4, and 1⁄12 in Roman abacus), and a decimal point can be imagined for fixed-point arithmetic. Any particular abacus design supports multiple methods to perform calculations, including addition, subtraction, multiplication, division, and square and cube roots. The beads are first arranged to represent a number, then are manipulated to perform a mathematical operation with another number, and their final position can be read as the result (or can be used as the starting number for subsequent operations). In the ancient world, abacuses were a practical calculating tool. Although calculators and computers are commonly used today instead of abacuses, abacuses remain in everyday use in some countries. The abacus has an advantage of not requiring a writing implement and paper (needed for algorism) or an electric power source. Merchants, traders, and clerks in some parts of Eastern Europe, Russia, China, and Africa use abacuses. The abacus remains in common use as a scoring system in non-electronic table games. Others may use an abacus due to visual impairment that prevents the use of a calculator. The abacus is still used to teach the fundamentals of mathematics to children in most countries. Etymology The word abacus dates to at least AD 1387 when a Middle English work borrowed the word from Latin that described a sandboard abacus. The Latin word is derived from ancient Greek ἄβαξ (abax) which means something without a base, and colloquially, any piece of rectangular material. Alternatively, without reference to ancient texts on etymology, it has been suggested that it means "a square tablet strewn with dust", or "drawing-board covered with dust (for the use of mathematics)" (the exact shape of the Latin perhaps reflects the genitive form of the Greek word, ἄβακoς (abakos)). While the table strewn with dust definition is popular, some argue evidence is insufficient for that conclusion. Greek ἄβαξ probably borrowed from a Northwest Semitic language like Phoenician, evidenced by a cognate with the Hebrew word ʾābāq (אבק), or "dust" (in the post-Biblical sense "sand used as a writing surface"). Both abacuses and abaci are used as plurals. The user of an abacus is called an abacist. History Mesopotamia The Sumerian abacus appeared between 2700 and 2300 BC. It held a table of successive columns which delimited the successive orders of magnitude of their sexagesimal (base 60) number system. Some scholars point to a character in Babylonian cuneiform that may have been derived from a representation of the abacus. It is the belief of Old Babylonian scholars, such as Ettore Carruccio, that Old Babylonians "seem to have used the abacus for the operations of addition and subtraction; however, this primitive device proved difficult to use for more complex calculations". Egypt Greek historian Herodotus mentioned the abacus in Ancient Egypt. He wrote that the Egyptians manipulated the pebbles from right to left, opposite in direction to the Greek left-to-right method. Archaeologists have found ancient disks of various sizes that are thought to have been used as counters. However, wall depictions of this instrument are yet to be discovered. Persia At around 600 BC, Persians first began to use the abacus, during the Achaemenid Empire. Under the Parthian, Sassanian, and Iranian empires, scholars concentrated on exchanging knowledge and inventions with the countries around them – India, China, and the Roman Empire- which is how the abacus may have been exported to other countries. Greece The earliest archaeological evidence for the use of the Greek abacus dates to the 5th century BC. Demosthenes (384 BC–322 BC) complained that the need to use pebbles for calculations was too difficult. A play by Alexis from the 4th century BC mentions an abacus and pebbles for accounting, and both Diogenes and Polybius use the abacus as a metaphor for human behavior, stating "that men that sometimes stood for more and sometimes for less" like the pebbles on an abacus. The Greek abacus was a table of wood or marble, pre-set with small counters in wood or metal for mathematical calculations. This Greek abacus was used in Achaemenid Persia, the Etruscan civilization, Ancient Rome, and the Western Christian world until the French Revolution. A tablet found on the Greek island Salamis in 1846 AD (the Salamis Tablet) dates to 300 BC, making it the oldest counting board discovered so far. It is a slab of white marble 149 cm (59 in) in length, 75 cm (30 in) wide, and 4.5 cm (2 in) thick, on which are 5 groups of markings. In the tablet's center is a set of 5 parallel lines equally divided by a vertical line, capped with a semicircle at the intersection of the bottom-most horizontal line and the single vertical line. Below these lines is a wide space with a horizontal crack dividing it. Below this crack is another group of eleven parallel lines, again divided into two sections by a line perpendicular to them, but with the semicircle at the top of the intersection; the third, sixth and ninth of these lines are marked with a cross where they intersect with the vertical line. Also from this time frame, the Darius Vase was unearthed in 1851. It was covered with pictures, including a "treasurer" holding a wax tablet in one hand while manipulating counters on a table with the other. Rome The normal method of calculation in ancient Rome, as in Greece, was by moving counters on a smooth table. Originally pebbles (Latin: calculi) were used. Marked lines indicated units, fives, tens, etc. as in the Roman numeral system. Writing in the 1st century BC, Horace refers to the wax abacus, a board covered with a thin layer of black wax on which columns and figures were inscribed using a stylus. One example of archaeological evidence of the Roman abacus, shown nearby in reconstruction, dates to the 1st century AD. It has eight long grooves containing up to five beads in each and eight shorter grooves having either one or no beads in each. .... Discover the Ettore Carruccio Isabel Quigly popular books. Find the top 100 most popular Ettore Carruccio Isabel Quigly books.
Best Seller Ettore Carruccio Isabel Quigly Books of 2024
-
Finding Cinderella
Colleen Hoover#1 New York Times bestselling author of It Starts with Us and It Ends With Us writes a free novella about the search for happily ever after. A chance encounter in the dark leads ei...
-
Frankenstein
Mary ShelleyAn Apple Books Classic edition. Mary Shelley was just 18 when she had a nightmare vision: “I saw the pale student of unhallowed arts kneeling beside the thing he had put together. ...
-
You Are Kind
Michael GordonA little kindness goes a long way. How can you help encourage your kids to be kind from a young age? Teach kindness to preschoolers Acts of kindness can be fun, easy, and make a ...
-
Brush With Death
Mia HallMy first year at the Dreadmore Academy. What can go wrong? How long do you have? The list of stuff that can go right is much, much shorter.  I'm probably going to fai...
-
A Light in the Window
Marion KummerowMargarete stumbles out of the bombedout house, the dust settling around her like snow. Mistaking her for the dead officer’s daughter, a guard rushes over to gently ask her if she i...
-
No Room For Regret
Janeen Ann O'ConnellThe movement of the ship seals his fate. He could be sailing anywhere, anytime, but he's not, he's going to the other side of the world. He could be anyone, but he's...
-
Dark Psychology and Manipulation
Margaret MorrisonTHE MENTAL MANIPULATOR WILL NO LONGER KEEP SECRETS FROM YOU! Are you fed up with the wool being pulled over your eyes?Are you prepared to stand up to those who believe they can man...
-
Sunrise at Crystal Bay
Mia KentA decadelong secret. A devastating betrayal. And a chance to return to the placeand the boyshe left behind. Leah Turner had it alla happy marriage of twentyfive years, two grown ch...
-
Game Changer
Piper LawsonA steamy, grumpy sunshine sports romance featuring a woman down on her luck, a star basketball player with a filthy mouth, and a connection neither of them can deny. After being du...
-
Imperfect Chemistry
Mary FrameShe's never understood the point of romance, but now he's going to show her. Lucy London puts the word genius to shame. Having obtained her PhD in microbiology by the age...
-
Beautiful Darkness
Autumn GazeYou can have anything you want in life... You just can't have everything you want... Gareth is Fae. Sort of. His mother was a Nymph, and with that cross, he finds himself to b...
-
The Next Girl
Carla KovachIF YOU ONLY READ ONE BOOK THIS YEAR, MAKE IT THE NEXT GIRL... You thought he’d come to save you. You were wrong. ‘ Absolutely the best thriller I’ve read this year! ’ Goodreads Rev...
-
The Hookup Equation
Roxie NoirTeach me everything. My whole life, I’ve been a good girl. I follow rules like nobody’s business. I obey guidelines like I was born to it. Show me a line, and I’ll toe it. I’m even...
-
Teach Me The Ropes
Vanessa ValeMeet the Manning brothers in this steamy small town cowboy series from USA Today Bestselling author Vanessa Vale! A bachelor auction. I was in a fing bachelor auction. I wasn'...
-
The Power of Unlimited Faith
Kynan BridgesTake The Limits Off Your Faith! Do you ever hear people talk about “getting more faith” or “increasing their faith?”  When we buy into this idea, we never have enough. Tho...
-
The Odyssey
HomerAn Apple Books Classic edition. Homer’s eighthcentury epic poem is a companion to The Iliad . It tells the story of Odysseus, who journeys by ship for 10 years after the Trojan War...
-
Doubly Claimed
C.D. GorriWill this curvy redhead find her match with two smexy shifters? Needing a break from her nightmare boss, Ginger is more than ready for the Freeman sisters' annual vacation. Sh...
-
The Wedding Bet
Susan HatlerA fun and uplifting story that will make you swoon and smile as two best friends fall in love. Kennedy needs to slow down, which is why her last boyfriend broke up with her. No mat...
-
Behind Closed Doors
Sherri HayesFalling For His New Neighbor Was Never Part of the Plan  Chris Daniels is single, and he prefers to keep it that way. Women are trouble. One look at his new neighbor has a...
-
When the Night is Over
Lily FosterAre the bonds of our first true love as strong as they feel when we’re young, innocent and consumed with the promise of forever? The last time Charlotte Mason saw Simon Wade, he wa...
-
Moby Dick
Herman MelvilleAn Apple Books Classic edition. Herman Melville’s classic begins with one of the most famous opening lines in world literature: “Call me Ishmael.” Moby Dick was a commercial failur...
-
Close to the Ridge
Lexy TimmsClimb the mountain so you can see the world, not so the world can see you. In the end, all I learned was how to be strong. Alone. Lincoln is a former Navy Seal, hiding away in the ...
-
Anna Karenina
Leo TolstoyAn Apple Books Classic edition. “Happy families are all alike; every unhappy family is unhappy in its own way.” Thus begins what many consider the world’s greatest novel. Leo Tolst...
-
The Scarlet Letter
Nathaniel HawthorneAn Apple Books Classic edition. Hester Prynne lives in infamy. After committing adultery and bearing a child with a man whose name she refuses to divulge, the heroine of Nathaniel ...
-
Wormwood Abbey
Christina BaehrAs a Victorian clergyman's daughter, Edith Worms has seen everything until a mythical salamander tumbles out of the fireplace into her lap. When a letter arrives from estrang...
-
Pride and Prejudice
Jane AustenAn Apple Books Classic edition. Jane Austen’s beloved classic opens with this witty and very memorable line: “It is a truth universally acknowledged, that a single man in possessio...
-
A Tempest of Discovery
Sarah M. Cradit“Absolutely riveting!” "Cradit's delivery of mystery and intrigue is flawless." "Be still my heart. Nicolas Deschanel is back and better than ever." “A mus...
-
Destined Magic
Ruby RaineI'm twentyeight, still single, no career, just inherited a mansion filled with magical secrets, three cats, plus a demon hellbent on killing kill me because supposedly, I'...
-
The Art of War
Sun TzuAn Apple Books Classic edition. It’s believed that Sun Tzu wrote this Chinese military primer during the 5th century BChundreds of years before the Bible. The book’s 13 chapters ex...
-
Enemies With Benefits
Roxie NoirI don’t love him. I don’t even like him. I just want him. Eli Loveless was my nemesis from the first day of kindergarten until we graduated high school. Everything I did, he had to...
-
Rascal
Katie McCoy"My hot new neighbor is keeping me up all night..." Discover the fakedating steamy romance, perfect for fans of Tessa Bailey, Elle Kennedy, and Hannah Grace! Emerson Haye...
-
The Girls on Chalk Hill
Alison BelshamThey lie on the hillside, wearing matching white dresses, tiaras in their blonde hair. Each of them clutches a red rose. They could be sleeping, but frost shines on the lashes of t...
-
Winnie-the-Pooh
A.A. MilneAn Apple Books Classic edition. If you haven’t met Winnie the Pooh yet, stop reading this, and start reading the bookyou’ll be so glad you did. The jovial stuffed bear and his ragt...
-
Dracula
Bram StokerAn Apple Books Classic edition. Few characters have seized readers’ imaginations quite like Count Dracula of Transylvania, the hero of Bram Stoker’s classic. The 1897 novel put vam...
-
Bedtime Stories
Uncle AmonBedtime Stories: 5 Magical Adventures for Little Dreamers Embark on a whimsical journey to dreamland with "Bedtime Stories: Magical Adventures for Little Dreamers". This ...
-
If I Break
Portia Moore~THIS BOOK IS BEST ENJOYED WHEN YOU DON'T READ ANY REVIEWS OR SPOILERS BEFORE READING. GOING IN BLIND IS HIGHLY RECOMMENDED. I PROMISE!~ Cal effin' Scott. Hell in a Arman...
-
Scorned Queen
Lisa Renee JonesThe protégé king wants the king unseated but it will be war, and a bloody one. And you can only push a future queen so far before she says enough, and proves she's as worthy f...
-
Serendipity
Carly PhillipsHe’s from the wrong side of the tracks. She lived in the house on the hill. Now their fortunes have reversed…but their longago attraction still burns. From high school golden girl ...
-
10-Minute Social Psychology
Albert RutherfordWould you like to instantly catch people's thoughts, emotions, motivations, and intentions through mere observation? If yes, you've come to the...
-
Last Resort
Jill SandersWhen Cassey's business is in jeopardy, she gets an interesting offer from a local hotel owner. He has been trying to run her business into the ground so his family can snat...
-
The Great Gatsby
F. Scott FitzgeraldAn Apple Books Classics edition. The Roaring Twenties are in full effect in F. Scott Fitzgerald’s riveting classic. Manabouttown Jay Gatsby seems to have it all, including loads of...
-
Opal
Freya BarkerWhen Opal goes undercover in a youth center several teenagers have disappeared from, she’s shocked to find a ghost of her own traumatic past at the helm. However, her worry for the...
-
The Count of Monte Cristo
Alexandre DumasAn Apple Books Classic edition. Alexandre Dumas’ classic paints a portrait of Edmond Dantès, a dark and calculating man who is willing to wait years to exact his perfect plan for r...
-
The Good Knight
Sarah WoodburyDON'T MISS THE SALE ON THE NEXT BOOKS IN THE SERIES! When a king is murdered on the way to his wedding, Gareth & Gwen join forces in their first mystery together! Five...
-
The Duke Who Knew Too Much
Grace CallawayA #1 National Bestselling Regency Romance He's a rake accused of murder. She's the spinster accusing him. Enemies make the hottest lovers. "Readers looking for a goo...
-
The Grumpy Dinosaur
Michael GordonEmotions & Feelings Series Book 2 A little Dinosaur gets annoyed easily, sometimes for no reason at all! Anger is a normal, healthy emotion. It's OK to feel a...
-
Protect Me
Margaret WatsonPolice officer Mia Donovan is studying for the detective's exam when her captain offers her an assignment – be Finn O'Rourke's personal bodyguard for the next three ...
-
Wrong Places
Teralyn MitchellSometimes the path to happily ever after runs through all the wrong places… Romance never did Maggie Anthony any favors. So now that she’s back in her small hometown as a divorced ...
-
Just One Time
Samantha BacaThere are worse things than turning forty.    However, I can't seem to evade my worry of my biological clock, and my fear that time is running out. I've...
-
Secrets of the Cottage by the Sea
Rebecca Alexander‘Heartwrenching… a delightful page turner’ ⭐⭐⭐⭐⭐ ‘I loved this’ ⭐⭐⭐⭐⭐ ‘Absolutely spectacular’ ⭐⭐⭐⭐⭐ ‘Heartbreaking… stunning’ ⭐⭐⭐⭐⭐   As Ellie stood on the boat, watching...