classes ::: author, Polymath, Mathematics, Poetry, Astronomy, Music,
children :::
branches ::: Eratosthenes

bookmarks: Instances - Definitions - Quotes - Chapters - Wordnet - Webgen


object:Eratosthenes
class:author
subject class:Polymath
subject class:Mathematics
subject class:Poetry
subject class:Astronomy
subject class:Music
Wikipedia
see also :::

questions, comments, suggestions/feedback, take-down requests, contribute, etc
contact me @ integralyogin@gmail.com or
join the integral discord server (chatrooms)
if the page you visited was empty, it may be noted and I will try to fill it out. cheers



now begins generated list of local instances, definitions, quotes, instances in chapters, wordnet info if available and instances among weblinks


OBJECT INSTANCES [0] - TOPICS - AUTHORS - BOOKS - CHAPTERS - CLASSES - SEE ALSO - SIMILAR TITLES

TOPICS
SEE ALSO


AUTH

BOOKS

IN CHAPTERS TITLE

IN CHAPTERS CLASSNAME

IN CHAPTERS TEXT

PRIMARY CLASS

author
SIMILAR TITLES
Eratosthenes

DEFINITIONS


TERMS STARTING WITH


TERMS ANYWHERE

sieve of Eratosthenes: A prime number sieve, it is an algorithm for finding prime numbers.



QUOTES [0 / 0 - 11 / 11]


KEYS (10k)


NEW FULL DB (2.4M)

   4 Carl Sagan
   2 Marcus Vitruvius Pollio
   2 Ken Jennings

*** WISDOM TROVE ***

1:Eratosthenes's only tools were sticks, eyes, feet, and brains; plus a zest for experiment. With those tools he correctly deduced the circumference of the Earth, to high precision, with an error of only a few percent. That's pretty good figuring for 2200 years ago. ~ carl-sagan, @wisdomtrove
2:Eratosthenes was the director of the great library of Alexandria, the Centre of science and learning in the ancient world. Aristotle had argued that humanity was divided into Greeks and everybody else, whom he called barbarians and that the Greeks should keep themselves racially pure. He thought it was fitting for the Greeks to enslave other peoples. But Erathosthenes criticized Aristotle for his blind chauvinism, he believed there was good and bad in every nation. ~ carl-sagan, @wisdomtrove

*** NEWFULLDB 2.4M ***

1:Eratosthenes, the mapmaker who was the first man to accurately measure the size of the Earth, was a librarian. ~ Ken Jennings,
2:Eratosthenes, the mapmaker who was the first man to accurately measure the size of the Earth, was a librarian. ~ Ken Jennings,
3:Today Eratosthenes' method [of calculating the circumference of the earth] seems almost banal... yet it is inaccessible to prescientific civilizations, and in all of Antiquity not a single Latin author succeeded in stating it coherently. ~ Lucio Russo,
4:Some people do indeed say that Eratosthenes could not have inferred the true measure of the earth. Whether true or untrue, it cannot affect the truth of what I have written on the fixing of the quarters from which the different winds blow. ~ Marcus Vitruvius Pollio,
5:Eratosthenes's only tools were sticks, eyes, feet, and brains; plus a zest for experiment. With those tools he correctly deduced the circumference of the Earth, to high precision, with an error of only a few percent. That's pretty good figuring for 2200 years ago. ~ Carl Sagan,
6:From the shadow length in Alexandria, the angle A can be measured. But from simple geometry (“if two parallel straight lines are transected by a third line, the alternate interior angles are equal”), angle B equals angle A. So by measuring the shadow length in Alexandria, Eratosthenes concluded that Syene was A = B = 7° away on the circumference of the Earth. ~ Carl Sagan,
7:Remembering that Eratosthenes of Cyrene, employing mathematical theories and geometrical methods, discovered from the course of the sun, the shadows cast by an equinoctial gnomon, and the inclination of the heaven that the circumference of the earth is two hundred and fifty-two thousand stadia, that is, thirty-one million five hundred thousand paces. ~ Marcus Vitruvius Pollio,
8:The Greek geographers of Alexandria, when they prepared their world map using the circumference of Eratosthenes, had in front of them source maps that had been drawn without the Eratosthenian error, that is, apparently without any discernible error at all. We shall see further evidence of this, evidence suggesting that the people who originated the maps possessed a more advanced science than that of the Greeks. ~ Charles H Hapgood,
9:Archimedes to Eratosthenes greeting. ... certain things first became clear to me by a mechanical method, although they had to be demonstrated by geometry afterwards because their investigation by the said method did not furnish an actual demonstration. But it is of course easier, when we have previously acquired by the method, some knowledge of the questions, to supply the proof than it is to find it without any previous knowledge. ~ Archimedes,
10:Eratosthenes was the director of the great library of Alexandria, the Centre of science and learning in the ancient world. Aristotle had argued that humanity was divided into Greeks and everybody else, whom he called barbarians and that the Greeks should keep themselves racially pure. He thought it was fitting for the Greeks to enslave other peoples. But Erathosthenes criticized Aristotle for his blind chauvinism, he believed there was good and bad in every nation. ~ Carl Sagan,
11:For the observed difference in the shadow lengths, the distance between Alexandria and Syene had to be about seven degrees along the surface of the Earth; that is, if you imagine the sticks extending down to the center of the Earth, they would there intersect at an angle of seven degrees. Seven degrees is something like one-fiftieth of three hundred and sixty degrees, the full circumference of the Earth. Eratosthenes knew that the distance between Alexandria and Syene was approximately 800 kilometers, because he hired a man to pace it out. Eight hundred kilometers times 50 is 40,000 kilometers: so that must be the circumference of the Earth. ~ Carl Sagan,

IN CHAPTERS [0/0]









WORDNET



--- Overview of noun eratosthenes

The noun eratosthenes has 1 sense (no senses from tagged texts)
                
1. Eratosthenes ::: (Greek mathematician and astronomer who estimated the circumference of the earth and the distances to the Moon and sun (276-194 BC))


--- Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun eratosthenes

1 sense of eratosthenes                        

Sense 1
Eratosthenes
   INSTANCE OF=> astronomer, uranologist, stargazer
     => physicist
       => scientist
         => person, individual, someone, somebody, mortal, soul
           => organism, being
             => living thing, animate thing
               => whole, unit
                 => object, physical object
                   => physical entity
                     => entity
           => causal agent, cause, causal agency
             => physical entity
               => entity
   INSTANCE OF=> mathematician
     => scientist
       => person, individual, someone, somebody, mortal, soul
         => organism, being
           => living thing, animate thing
             => whole, unit
               => object, physical object
                 => physical entity
                   => entity
         => causal agent, cause, causal agency
           => physical entity
             => entity


--- Hyponyms of noun eratosthenes
                                    


--- Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun eratosthenes

1 sense of eratosthenes                        

Sense 1
Eratosthenes
   INSTANCE OF=> astronomer, uranologist, stargazer
   INSTANCE OF=> mathematician




--- Coordinate Terms (sisters) of noun eratosthenes

1 sense of eratosthenes                        

Sense 1
Eratosthenes
  -> astronomer, uranologist, stargazer
   => astrophysicist
   => cosmologist
   HAS INSTANCE=> Alhazen, Alhacen, al-Haytham, Ibn al-Haytham, Al-Hasan ibn al-Haytham
   HAS INSTANCE=> Anaximander
   HAS INSTANCE=> Aristarchus of Samos
   HAS INSTANCE=> Bessel, Friedrich Wilhelm Bessel
   HAS INSTANCE=> Bowditch, Nathaniel Bowditch
   HAS INSTANCE=> Brahe, Tycho Brahe
   HAS INSTANCE=> Celsius, Anders Celsius
   HAS INSTANCE=> Copernicus, Nicolaus Copernicus, Mikolaj Kopernik
   HAS INSTANCE=> Eddington, Sir Arthur Stanley Eddington
   HAS INSTANCE=> Eratosthenes
   HAS INSTANCE=> Galileo, Galileo Galilei
   HAS INSTANCE=> Hale, George Ellery Hale
   HAS INSTANCE=> Hall, Asaph Hall
   HAS INSTANCE=> Halley, Edmond Halley, Edmund Halley
   HAS INSTANCE=> Herschel, William Herschel, Sir William Herschel, Sir Frederick William Herschel
   HAS INSTANCE=> Herschel, John Herschel, Sir John Herschel, Sir John Frederick William Herschel
   HAS INSTANCE=> Hipparchus
   HAS INSTANCE=> Huggins, Sir William Huggins
   HAS INSTANCE=> Hypatia
   HAS INSTANCE=> Kepler, Johannes Kepler, Johan Kepler
   HAS INSTANCE=> Kuiper, Gerard Kuiper, Gerard Peter Kuiper
   HAS INSTANCE=> Langley, Samuel Pierpoint Langley
   HAS INSTANCE=> Laplace, Marquis de Laplace, Pierre Simon de Laplace
   HAS INSTANCE=> Lovell, Sir Bernard Lovell, Sir Alfred Charles Bernard Lovell
   HAS INSTANCE=> Lowell, Percival Lowell
   HAS INSTANCE=> Mitchell, Maria Mitchell
   HAS INSTANCE=> Muller, Johann Muller, Regiomontanus
   HAS INSTANCE=> Newcomb, Simon Newcomb
   HAS INSTANCE=> Omar Khayyam
   HAS INSTANCE=> Oort, Jan Hendrix Oort
   HAS INSTANCE=> Peirce, Benjamin Peirce
   HAS INSTANCE=> Ptolemy, Claudius Ptolemaeus
   HAS INSTANCE=> Rittenhouse, David Rittenhouse
   HAS INSTANCE=> Russell, Henry Russell, Henry Norris Russell
   HAS INSTANCE=> Schiaparelli, Giovanni Virginio Schiaparelli
   HAS INSTANCE=> Shapley, Harlow Shapley
   HAS INSTANCE=> Sitter, Willem de Sitter
   HAS INSTANCE=> Thales, Thales of Miletus
   HAS INSTANCE=> Tombaugh, Clyde Tombaugh, Clyde William Tombaugh
  -> mathematician
   => algebraist
   => arithmetician
   => geometer, geometrician
   => number theorist
   => probability theorist
   => statistician, mathematical statistician
   => trigonometrician
   HAS INSTANCE=> Abel, Niels Abel, Niels Henrik Abel
   HAS INSTANCE=> Alhazen, Alhacen, al-Haytham, Ibn al-Haytham, Al-Hasan ibn al-Haytham
   HAS INSTANCE=> Archimedes
   HAS INSTANCE=> Bayes, Thomas Bayes
   HAS INSTANCE=> Bernoulli, Jakob Bernoulli, Jacques Bernoulli, James Bernoulli
   HAS INSTANCE=> Bernoulli, Johann Bernoulli, Jean Bernoulli, John Bernoulli
   HAS INSTANCE=> Bessel, Friedrich Wilhelm Bessel
   HAS INSTANCE=> Boole, George Boole
   HAS INSTANCE=> Bowditch, Nathaniel Bowditch
   HAS INSTANCE=> Condorcet, Marquis de Condorcet, Marie Jean Antoine Nicolas Caritat
   HAS INSTANCE=> Descartes, Rene Descartes
   HAS INSTANCE=> Diophantus
   HAS INSTANCE=> Eratosthenes
   HAS INSTANCE=> Euler, Leonhard Euler
   HAS INSTANCE=> Fermat, Pierre de Fermat
   HAS INSTANCE=> Fourier, Jean Baptiste Joseph Fourier, Baron Jean Baptiste Joseph Fourier
   HAS INSTANCE=> Galois, Evariste Galois
   HAS INSTANCE=> Gauss, Karl Gauss, Karl Friedrich Gauss
   HAS INSTANCE=> Godel, Kurt Godel
   HAS INSTANCE=> Hamilton, William Rowan Hamilton, Sir William Rowan Hamilton
   HAS INSTANCE=> Hero, Heron, Hero of Alexandria
   HAS INSTANCE=> Hilbert, David Hilbert
   HAS INSTANCE=> Hipparchus
   HAS INSTANCE=> Jacobi, Karl Gustav Jacob Jacobi
   HAS INSTANCE=> Klein, Felix Klein
   HAS INSTANCE=> Kronecker, Leopold Kronecker
   HAS INSTANCE=> Laplace, Marquis de Laplace, Pierre Simon de Laplace
   HAS INSTANCE=> Leibniz, Leibnitz, Gottfried Wilhelm Leibniz, Gottfried Wilhelm Leibnitz
   HAS INSTANCE=> Lobachevsky, Nikolai Ivanovich Lobachevsky
   HAS INSTANCE=> Mandelbrot, Benoit Mandelbrot
   HAS INSTANCE=> Markov, Andrei Markov, Markoff, Andre Markoff
   HAS INSTANCE=> Minkowski, Hermann Minkowski
   HAS INSTANCE=> Mobius, August F. Mobius, August Ferdinand Mobius
   HAS INSTANCE=> Muller, Johann Muller, Regiomontanus
   HAS INSTANCE=> Napier, John Napier
   HAS INSTANCE=> Newton, Isaac Newton, Sir Isaac Newton
   HAS INSTANCE=> Noether, Emmy Noether
   HAS INSTANCE=> Omar Khayyam
   HAS INSTANCE=> Pascal, Blaise Pascal
   HAS INSTANCE=> Peirce, Benjamin Peirce
   HAS INSTANCE=> Pythagoras
   HAS INSTANCE=> Riemann, Bernhard Riemann, Georg Friedrich Bernhard Riemann
   HAS INSTANCE=> Turing, Alan Turing, Alan Mathison Turing
   HAS INSTANCE=> Veblen, Oswald Veblen
   HAS INSTANCE=> Vernier, Paul Vernier
   HAS INSTANCE=> von Neumann, Neumann, John von Neumann
   HAS INSTANCE=> Weil, Andre Weil
   HAS INSTANCE=> Whitehead, Alfred North Whitehead
   HAS INSTANCE=> Wiener, Norbert Wiener




--- Grep of noun eratosthenes
eratosthenes



IN WEBGEN [10000/0]




convenience portal:
recent: Section Maps - index table - favorites
Savitri -- Savitri extended toc
Savitri Section Map -- 1 2 3 4 5 6 7 8 9 10 11 12
authors -- Crowley - Peterson - Borges - Wilber - Teresa - Aurobindo - Ramakrishna - Maharshi - Mother
places -- Garden - Inf. Art Gallery - Inf. Building - Inf. Library - Labyrinth - Library - School - Temple - Tower - Tower of MEM
powers -- Aspiration - Beauty - Concentration - Effort - Faith - Force - Grace - inspiration - Presence - Purity - Sincerity - surrender
difficulties -- cowardice - depres. - distract. - distress - dryness - evil - fear - forget - habits - impulse - incapacity - irritation - lost - mistakes - obscur. - problem - resist - sadness - self-deception - shame - sin - suffering
practices -- Lucid Dreaming - meditation - project - programming - Prayer - read Savitri - study
subjects -- CS - Cybernetics - Game Dev - Integral Theory - Integral Yoga - Kabbalah - Language - Philosophy - Poetry - Zen
6.01 books -- KC - ABA - Null - Savitri - SA O TAOC - SICP - The Gospel of SRK - TIC - The Library of Babel - TLD - TSOY - TTYODAS - TSZ - WOTM II
8 unsorted / add here -- Always - Everyday - Verbs


change css options:
change font "color":
change "background-color":
change "font-family":
change "padding":
change "table font size":
last updated: 2022-04-29 17:44:43
144665 site hits