Celebrating 20 Years on the Web
TODAY IN SCIENCE HISTORY ®
Find science on or your birthday

Today in Science History - Quickie Quiz
Who said: “Every body perseveres in its state of being at rest or of moving uniformly straight forward, except insofar as it is compelled to change its state by forces impressed.”
more quiz questions >>
Home > Category Index for Science Quotations > Category Index P > Category: Ponderable

Ponderable Quotes (4 quotes)

As soon as matter took over, the force of Newtonian gravity, which represents one of the most important characteristics of “ponderable” matter, came into play.
In Conclusion of The Creation of the Universe (1952, 2012), 136.
Science quotes on:  |  Characteristic (148)  |  Force (488)  |  Gravity (133)  |  Important (210)  |  Matter (801)  |  Most (1729)  |  Newtonian (3)  |  Represent (154)  |  Soon (186)

In defining an element let us not take an external boundary, Let us say, e.g., the smallest ponderable quantity of yttrium is an assemblage of ultimate atoms almost infinitely more like each other than they are to the atoms of any other approximating element. It does not necessarily follow that the atoms shall all be absolutely alike among themselves. The atomic weight which we ascribe to yttrium, therefore, merely represents a mean value around which the actual weights of the individual atoms of the “element” range within certain limits. But if my conjecture is tenable, could we separate atom from atom, we should find them varying within narrow limits on each side of the mean.
Address to Annual General Meeting of the Chemical Society (28 Mar 1888), printed in Journal of the Chemical Society (1888), 491.
Science quotes on:  |  Absolutely (39)  |  Actual (117)  |  Alike (60)  |  All (4107)  |  Approximation (31)  |  Ascribe (17)  |  Assemblage (17)  |  Atom (358)  |  Boundary (51)  |  Certain (550)  |  Conjecture (49)  |  Definition (224)  |  Element (310)  |  External (57)  |  Find (999)  |  Follow (379)  |  Individual (404)  |  Infinitely (13)  |  Limit (281)  |  Mean (809)  |  Merely (316)  |  More (2559)  |  Narrow (84)  |  Necessarily (135)  |  Other (2236)  |  Quantity (132)  |  Range (99)  |  Represent (154)  |  Say (984)  |  Separate (143)  |  Side (232)  |  Smallest (9)  |  Tenable (4)  |  Themselves (433)  |  Ultimate (146)  |  Value (368)  |  Variation (90)  |  Weight (136)  |  Yttrium (3)

One word characterises the most strenuous of the efforts for the advancement of science that I have made perseveringly during fifty-five years; that word is failure. I know no more of electric and magnetic force, or of the relation between ether, electricity and ponderable matter, or of chemical affinity, than I knew and tried to teach to my students of natural philosophy fifty years ago in my first session as Professor.
Address (16 Jun 1896), at Celebration for his Jubilee as Professor, at Glasgow University. Printed in The Electrician (19 Jun 1896), 37, 247.
Science quotes on:  |  Advancement (62)  |  Affinity (27)  |  Chemical (292)  |  Chemical Affinity (2)  |  Effort (227)  |  Electric (76)  |  Electricity (160)  |  Ether (35)  |  Failure (161)  |  First (1284)  |  Force (488)  |  Know (1519)  |  Magnetic (44)  |  Matter (801)  |  More (2559)  |  Most (1729)  |  Natural (796)  |  Natural Philosophy (52)  |  Persevere (5)  |  Philosophy (382)  |  Professor (129)  |  Relation (157)  |  Science (3880)  |  Strenuous (5)  |  Student (301)  |  Teach (278)  |  Word (622)  |  Year (932)

[On Oxygen, Chlorine, Iodine, Fluorine:] The most important division of ponderable substances seems to be that which represents their electrical energies or their respective inherent states. When the poles of a voltaic apparatus are introduced into a mixture of the simple substances, it is found that four of them go to the positive, while the rest evince their state by passing to the negative pole. As this division coincides with one resulting from a consideration of their most important properties, it is that which I shall adopt as the first.
From 5th Lecture in 1816, in Bence Jones, The Life and Letters of Faraday (1870), Vol. 1, 217-218.
Science quotes on:  |  Adopt (19)  |  Apparatus (68)  |  Chlorine (15)  |  Consideration (139)  |  Division (65)  |  Electrical (57)  |  First (1284)  |  Fluorine (5)  |  Importance (287)  |  Inherent (42)  |  Introduce (63)  |  Iodine (7)  |  Mixture (42)  |  Most (1729)  |  Negative (63)  |  Oxygen (67)  |  Passing (76)  |  Polarity (5)  |  Pole (47)  |  Positive (94)  |  Property (169)  |  Represent (154)  |  Rest (281)  |  Simple (406)  |  State (491)  |  Substance (248)  |  Voltaic (9)


Carl Sagan Thumbnail In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion. (1987) -- Carl Sagan
Quotations by: • Albert Einstein • Isaac Newton • Lord Kelvin • Charles Darwin • Srinivasa Ramanujan • Carl Sagan • Florence Nightingale • Thomas Edison • Aristotle • Marie Curie • Benjamin Franklin • Winston Churchill • Galileo Galilei • Sigmund Freud • Robert Bunsen • Louis Pasteur • Theodore Roosevelt • Abraham Lincoln • Ronald Reagan • Leonardo DaVinci • Michio Kaku • Karl Popper • Johann Goethe • Robert Oppenheimer • Charles Kettering  ... (more people)

Quotations about: • Atomic  Bomb • Biology • Chemistry • Deforestation • Engineering • Anatomy • Astronomy • Bacteria • Biochemistry • Botany • Conservation • Dinosaur • Environment • Fractal • Genetics • Geology • History of Science • Invention • Jupiter • Knowledge • Love • Mathematics • Measurement • Medicine • Natural Resource • Organic Chemistry • Physics • Physician • Quantum Theory • Research • Science and Art • Teacher • Technology • Universe • Volcano • Virus • Wind Power • Women Scientists • X-Rays • Youth • Zoology  ... (more topics)
Sitewide search within all Today In Science History pages:
Visit our Science and Scientist Quotations index for more Science Quotes from archaeologists, biologists, chemists, geologists, inventors and inventions, mathematicians, physicists, pioneers in medicine, science events and technology.

Names index: | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |

Categories index: | 1 | 2 | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
- 100 -
Sophie Germain
Gertrude Elion
Ernest Rutherford
James Chadwick
Marcel Proust
William Harvey
Johann Goethe
John Keynes
Carl Gauss
Paul Feyerabend
- 90 -
Antoine Lavoisier
Lise Meitner
Charles Babbage
Ibn Khaldun
Euclid
Ralph Emerson
Robert Bunsen
Frederick Banting
Andre Ampere
Winston Churchill
- 80 -
John Locke
Bronislaw Malinowski
Bible
Thomas Huxley
Alessandro Volta
Erwin Schrodinger
Wilhelm Roentgen
Louis Pasteur
Bertrand Russell
Jean Lamarck
- 70 -
Samuel Morse
John Wheeler
Nicolaus Copernicus
Robert Fulton
Pierre Laplace
Humphry Davy
Thomas Edison
Lord Kelvin
Theodore Roosevelt
Carolus Linnaeus
- 60 -
Francis Galton
Linus Pauling
Immanuel Kant
Martin Fischer
Robert Boyle
Karl Popper
Paul Dirac
Avicenna
James Watson
William Shakespeare
- 50 -
Stephen Hawking
Niels Bohr
Nikola Tesla
Rachel Carson
Max Planck
Henry Adams
Richard Dawkins
Werner Heisenberg
Alfred Wegener
John Dalton
- 40 -
Pierre Fermat
Edward Wilson
Johannes Kepler
Gustave Eiffel
Giordano Bruno
JJ Thomson
Thomas Kuhn
Leonardo DaVinci
Archimedes
David Hume
- 30 -
Andreas Vesalius
Rudolf Virchow
Richard Feynman
James Hutton
Alexander Fleming
Emile Durkheim
Benjamin Franklin
Robert Oppenheimer
Robert Hooke
Charles Kettering
- 20 -
Carl Sagan
James Maxwell
Marie Curie
Rene Descartes
Francis Crick
Hippocrates
Michael Faraday
Srinivasa Ramanujan
Francis Bacon
Galileo Galilei
- 10 -
Aristotle
John Watson
Rosalind Franklin
Michio Kaku
Isaac Asimov
Charles Darwin
Sigmund Freud
Albert Einstein
Florence Nightingale
Isaac Newton


by Ian Ellis
who invites your feedback
Thank you for sharing.
Today in Science History
Sign up for Newsletter
with quiz, quotes and more.