Quotes about circumference

A collection of quotes on the topic of circumference, circle, center, earth.

Quotes about circumference

Blaise Pascal photo

“Nature is an infinite sphere whose center is everywhere and whose circumference is nowhere.”

Blaise Pascal (1623–1662) French mathematician, physicist, inventor, writer, and Christian philosopher
Voltaire photo

“God is a circle whose center is everywhere and circumference nowhere.”

Voltaire (1694–1778) French writer, historian, and philosopher

For a discussion of this quotation, which is uncertain in origin but was quoted long before Voltaire, see the following: http://symbio.trick.ca/HomeSashaOnePageBible[2016-05-29]
Misattributed

Nicholas of Cusa photo

“The universe has no circumference”

Nicholas of Cusa (1401–1464) German philosopher, theologian, jurist, and astronomer

ibid.
Context: The universe has no circumference, for if it had a center and a circumference there would be some and some thing beyond the world, suppositions which are wholly lacking in truth. Since, therefore, it is impossible that the universe should be enclosed within a corporeal center and corporeal boundary, it is not within our power to understand the universe, whose center and circumference are God. And though the universe cannot be infinite, nevertheless it cannot be conceived as finite since there are no limits within which it could be confined.

Ernst Bloch photo
Vitruvius photo
James Bradley photo

“If we suppose the distance of the fixed stars from the sun to be so great that the diameter of the earth's orbit viewed from them would not subtend a sensible angle, or which amounts to the same, that their annual parallax is quite insensible; it will then follow that a line drawn from the earth in any part of its orbit to a fixed star, will always, as to sense, make the same angle with the plane of the ecliptic, and the place of the star, as seen from the earth, would be the same as seen from the sun placed in the focus of the ellipsis described by the earth in its annual revolution, which place may therefore be called its true or real place.
But if we further suppose that the velocity of the earth in its orbit bears any sensible proportion to the velocity with which light is propagated, it will thence follow that the fixed stars (though removed too far off to be subject to a parallax on account of distance) will nevertheless be liable to an aberration, or a kind of parallax, on account of the relative velocity between light and the earth in its annual motion.
For if we conceive, as before, the true place of any star to be that in which it would appear viewed from the sun, the visible place to a spectator moving along with the earth, will be always different from its true, the star perpetually appearing out of its true place more or less, according as the velocity of the earth in its orbit is greater or less; so that when the earth is in its perihelion, the star will appear farthest distant from its true place, and nearest to it when the earth is in its aphelion; and the apparent distance in the former case will be to that in the latter in the reciprocal proportion of the distances of the earth in its perihelion and its aphelion. When the earth is in any other part of its orbit, its velocity being always in the reciprocal proportion of the perpendicular let fall from the sun to the tangent of the ellipse at that point where the earth is, or in the direct proportion of the perpendicular let fall upon the same tangent from the other focus, it thence follows that the apparent distance of a star from its true place, will be always as the perpendicular let fall from the upper focus upon the tangent of the ellipse. And hence it will be found likewise, that (supposing a plane passing through the star parallel to the earth's orbit) the locus or visible place of the star on that plane will always be in the circumference of a circle, its true place being in that diameter of it which is parallel to the shorter axis of the earth's orbit, in a point that divides that diameter into two parts, bearing the same proportion to each other, as the greatest and least distances of the earth from the sun.”

James Bradley (1693–1762) English astronomer; Astronomer Royal

Miscellaneous Works and Correspondence (1832), Demonstration of the Rules relating to the Apparent Motion of the Fixed Stars upon account of the Motion of Light.

Jayant Narlikar photo
Chanakya photo
Heinrich Hertz photo

“When a constant electric current flows along a cylindrical wire, its strength is the same at every part of the section of the wire. But if the current is variable, self-induction produces a deviation from this… induction opposes variations of the current in the centre of the wire more strongly than at the circumference, and consequently the current by preference flows along the outer portion of the wire. When the current changes its direction… this deviation increases rapidly with the rate of alternation; and when the current alternates many million times per second, almost the whole of the interior of the wire must, according to theory, appear free from current, and the flow must confine itself to the very skin of the wire. Now in such extreme cases… preference must be given to another conception of the matter which was first presented by Messrs. 0. Heaviside and J. H. Poynting, as the correct interpretation of Maxwell's equations as applied to this case. According to this view, the electric force which determines the current is not propagated in the wire itself, but under all circumstances penetrates from without into the wire, and spreads into the metal with comparative slowness and laws similar to those which govern changes of temperature in a conducting body.
…Inasmuch as I made use of electric waves in wires of exceedingly short period in my experiments on the propagation of electric force, it was natural to test by means of these the correctness of the conclusions deduced. As a matter of fact the theory was found to be confirmed by the experiments…”

Heinrich Hertz (1857–1894) German physicist

"On the Propagation of Electric Waves by Means of Wires" (1889) Wiedemann's Annalen. 37 p. 395, & pp.160-161 of Electric Waves
Electric Waves: Being Researches on the Propagation of Electric Action with Finite Velocity Through Space (1893)

Adam Weishaupt photo
Nikola Tesla photo
Gustave Flaubert photo
E. W. Hobson photo

“The first period embraces the time between the first records of empirical determinations of the ratio of the circumference to the diameter of a circle until the invention of the Differential and Integral Calculus, in the middle of the seventeenth century. This period, in which the ideal of an exact construction was never entirely lost sight of, and was occasionally supposed to have been attained, was the geometrical period, in which the main activity consisted in the approximate determination of π by the calculation of the sides or the areas of regular polygons in- and circum-scribed to the circle. The theoretical groundwork of the method was the Greek method of Exhaustions. In the earlier part of the period the work of approximation was much hampered by the backward condition of arithmetic due to the fact that our present system of numerical notation had not yet been invented; but the closeness of the approximations obtained in spite of this great obstacle are truly surprising. In the later part of this first period methods were devised by which the approximations to the value of π were obtained which required only a fraction of the labour involved in the earlier calculations. At the end of the period the method was developed to so high a degree of perfection that no further advance could be hoped for on the lines laid down by the Greek Mathematicians; for further progress more powerful methods were required.”

E. W. Hobson (1856–1933) British mathematician

Source: Squaring the Circle (1913), pp. 10-11

Alauddin Khalji photo
Thomas Guthrie photo
Nicholas of Cusa photo

“God is an infinite circle whose center is everywhere and whose circumference is nowhere.”

Nicholas of Cusa (1401–1464) German philosopher, theologian, jurist, and astronomer

ibid.

Northrop Frye photo
Aristarchus of Samos photo
Aristarchus of Samos photo
Nicholas of Cusa photo
Pierre Teilhard De Chardin photo

“The world can no more have two summits than a circumference can have two centres.”

Pierre Teilhard De Chardin (1881–1955) French philosopher and Jesuit priest

Epilogue, In Expectation of the Parousia, p. 154
The Divine Milieu (1960)

Emily Dickinson photo
Vitruvius photo
Paul Carus photo
Aryabhata photo

“Translates to: Add four to 100, multiply by eight, and then add 62,000. By this rule the circumference of a circle with a diameter of 20,000 can be approached. Thus according to the rule ((4 + 100) × 8 + 62000)/20000 = 62832/20000 = 3.1416, which is accurate to five significant figures.”

Aryabhata (476–550) Indian mathematician-astronomer

The irrationality of pi was proved by Lambert in Europe in the year 1761.
Source: Arijit Roy The Enigma of Creation and Destruction http://books.google.co.in/books?id=JFmUQqYzA7wC&pg=PA27, Author House, 28 October 2011, p. 27

Vitruvius photo
Frithjof Schuon photo
Amir Khusrow photo
John James Ingalls photo

“Every man is the center of a circle, whose fatal circumference he can not pass.”

John James Ingalls (1833–1900) American politician

Eulogy on Benjamin Hill, United States Senate, Jan. 23, 1882.

Lucio Russo photo

“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 (1944) Italian historian and scientist

3.2, "Geodesy and Mathematical Geography", p. 68
The Forgotten Revolution: How Science Was Born in 300 BC and Why It Had to Be Reborn (2004)

“We live on the circumference of a hollow circle. We draw the circumference, like spiders, out of ourselves: it is all criticism of criticism.”

Laura Riding Jackson (1901–1991) poet, critic, novelist, essayist and short story writer

"The Corpus", from Anarchism Is Not Enough (London: Jonathan Cape, 1928)

“… each dot: the center of a circle without circumference …”

Frederick Franck (1909–2006) Dutch painter

Source: Echoes from the Bottomless Well (1985), p. 2

Thomas Chalmers photo
John Cowper Powys photo
Starhawk photo

“This is the stillness behind motion, when time itself stops; the center is also the circumference of all.”

Starhawk (1951) American author, activist and Neopagan

The Spiral Dance: A Rebirth of the Ancient Religion of the Goddess (1979)
Context: This is the stillness behind motion, when time itself stops; the center is also the circumference of all. We are awake in the night. We turn the Wheel to bring the light. We call the sun from the womb of night. Blessed Be!

Edwin Abbott Abbott photo

“As the number of the sides increases, a Polygon approximates to a Circle; and, when the number is very great indeed, say for example three or four hundred, it is extremely difficult for the most delicate touch to feel any polygonal angles. Let me say rather, it WOULD be difficult: for, as I have shown above, Recognition by Feeling is unknown among the highest society, and to FEEL a Circle would be considered a most audacious insult. This habit of abstention from Feeling in the best society enables a Circle the more easily to sustain the veil of mystery in which, from his earliest years, he is wont to enwrap the exact nature of his Perimeter or Circumference.”

Source: Flatland: A Romance of Many Dimensions (1884), PART I: THIS WORLD, Chapter 11. Concerning our Priests
Context: p>With us, our Priests are Administrators of all Business, Art, and Science; Directors of Trade, Commerce, Generalship, Architecture, Engineering, Education, Statesmanship, Legislature, Morality, Theology; doing nothing themselves, they are the Causes of everything worth doing, that is done by others.Although popularly everyone called a Circle is deemed a Circle, yet among the better educated Classes it is known that no Circle is really a Circle, but only a Polygon with a very large number of very small sides. As the number of the sides increases, a Polygon approximates to a Circle; and, when the number is very great indeed, say for example three or four hundred, it is extremely difficult for the most delicate touch to feel any polygonal angles. Let me say rather, it WOULD be difficult: for, as I have shown above, Recognition by Feeling is unknown among the highest society, and to FEEL a Circle would be considered a most audacious insult. This habit of abstention from Feeling in the best society enables a Circle the more easily to sustain the veil of mystery in which, from his earliest years, he is wont to enwrap the exact nature of his Perimeter or Circumference.</p

Eratosthenes photo
Harry Gordon Selfridge photo
Annie Besant photo

“A man who is a spiritual man--a religious teacher--regards the universe from the standpoint of the Spirit from which everything is seen as coming from the One. When he stands, as it were, in the centre, and he looks from the centre to the circumference, he stands at the point whence the force proceeds, and he judges of the force from that point of radiation and he sees it as one in its multitudinous workings, and knows the force is One; he sees it in its many divergencies, and he recognises it as one and the same thing throughout. Standing in the centre, in the Spirit, and looking outwards to the universe, he judges everything from the standpoint of the Divine Unity and sees every separate phenomenon, not as separate from the One but as the external expression of the one and the only Life. But science looks at the thing from the surface. It goes to the circumference of the universe and it sees a multiplicity of phenomena. It studies these separated things and studies them one by one. It takes up a manifestation and judges it; it judges it apart; it looks at the many, not at the One; it looks at the diversity, not at the Unity, and sees everything from outside and not from within: it sees the external difference and the superficial portion while it sees not the One from which every thing proceeds.”

Annie Besant (1847–1933) British socialist, theosophist, women's rights activist, writer and orator

Source: Essays and Addresses, Vol. III- Evolution and Occultism (1913)