Find science on or your birthday

Today in Science History - Quickie Quiz
Who said: “I seem to have been only like a boy playing on the seashore, ... finding a smoother pebble or a prettier shell ... whilst the great ocean of truth lay all undiscovered before me.”
more quiz questions >>
Home > Category Index for Science Quotations > Category Index P > Category: Pump

Pump Quotes (4 quotes)

In fact, the thickness of the Earth's atmosphere, compared with the size of the Earth, is in about the same ratio as the thickness of a coat of shellac on a schoolroom globe is to the diameter of the globe. That's the air that nurtures us and almost all other life on Earth, that protects us from deadly ultraviolet light from the sun, that through the greenhouse effect brings the surface temperature above the freezing point. (Without the greenhouse effect, the entire Earth would plunge below the freezing point of water and we'd all be dead.) Now that atmosphere, so thin and fragile, is under assault by our technology. We are pumping all kinds of stuff into it. You know about the concern that chlorofluorocarbons are depleting the ozone layer; and that carbon dioxide and methane and other greenhouse gases are producing global warming, a steady trend amidst fluctuations produced by volcanic eruptions and other sources. Who knows what other challenges we are posing to this vulnerable layer of air that we haven't been wise enough to foresee?
In 'Wonder and Skepticism', Skeptical Enquirer (Jan-Feb 1995), 19, No. 1.
Science quotes on:  |  Air (84)  |  Assault (5)  |  Atmosphere (42)  |  Carbon Dioxide (14)  |  Challenge (15)  |  Concern (30)  |  Death (183)  |  Diameter (5)  |  Earth (250)  |  Eruption (3)  |  Freezing Point (2)  |  Global Warming (19)  |  Globe (20)  |  Greenhouse Gas (2)  |  Layer (8)  |  Life (460)  |  Light (117)  |  Methane (3)  |  Nurture (6)  |  Ozone (3)  |  Ratio (9)  |  School (36)  |  Source (33)  |  Stuff (8)  |  Sun (115)  |  Surface (37)  |  Technology (98)  |  Temperature (23)  |  Thickness (4)  |  Thin (3)  |  Trend (8)  |  Volcano (24)  |  Vulnerability (2)  |  Water (122)  |  Wisdom (91)

Pervasive depletion and overuse of water supplies, the high capital cost of new large water projects, rising pumping costs and worsening ecological damage call for a shift in the way water is valued, used and managed.
From a study Postel wrote for Worldwatch Institute, quoted in New York Times (22 Sep 1985), 19.
Science quotes on:  |  Capital (9)  |  Cost (15)  |  Dam (2)  |  Damage (9)  |  Depletion (3)  |  Ecology (21)  |  High (12)  |  Large (22)  |  Management (6)  |  Pervasive (2)  |  Project (5)  |  Shift (9)  |  Supply (15)  |  Use (54)  |  Value (63)  |  Water (122)

The first experiment a child makes is a physical experiment: the suction-pump is but an imitation of the first act of every new-born infant.
'On the Study of Physics', From a Lecture delivered in the Royal Institution of Great Britain in the Spring of 1854. Fragments of Science for Unscientific People: A Series of Detached Essays, Lectures, and Reviews (1892), Vol. 1, 283.
Science quotes on:  |  Act (22)  |  Child (90)  |  Experiment (369)  |  First (42)  |  Imitation (7)  |  Infant (6)  |  New-born (2)  |  Physics (156)

[The steamboat] will answer for sea voyages as well as for inland navigation, in particular for packets, where there may be a great number of passengers. He is also of opinion, that fuel for a short voyage would not exceed the weight of water for a long one, and it would produce a constant supply of fresh water. ... [T]he boat would make head against the most violent tempests, and thereby escape the danger of a lee shore; and that the same force may be applied to a pump to free a leaky ship of her water. ... [T]he good effects of the machine, is the almost omnipotent force by which it is actuated, and the very simple, easy, and natural way by which the screws or paddles are turned to answer the purpose of oars.
[This letter was written in 1785, before the first steamboat carried a man (Fitch) on 27 Aug 1787.]
Letter to Benjamin Franklin (12 Oct 1785), in The Works of Benjamin Franklin (1882), Vol. 10, 232.
Science quotes on:  |  Danger (32)  |  Ease (20)  |  Fuel (16)  |  Leak (3)  |  Machine (56)  |  Natural (48)  |  Navigation (6)  |  Oar (2)  |  Omnipotent (3)  |  Packet (2)  |  Passenger (3)  |  Screw (3)  |  Sea (57)  |  Ship (18)  |  Simplicity (92)  |  Steamboat (3)  |  Tempest (3)  |  Violent (2)  |  Voyage (2)


Sitewide search within all Today In Science History pages:
Custom Quotations Search - custom search within only our quotations 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 |
Author Icon
who invites your feedback

Today in Science History

Most Popular

Thank you for sharing.
Today in Science History
Sign up for Newsletter
with quiz, quotes and more.
- 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