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Who said: “A change in motion is proportional to the motive force impressed and takes place along the straight line in which that force is impressed.”
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Home > Category Index for Science Quotations > Category Index I > Category: Iron Age

Iron Age Quotes (3 quotes)

As the world has seen its age of stone, its age of bronze, and its age of iron, so it may before long have embarked on a new and even more prosperous era—the age of aluminium.
Magazine
Concluding remark in uncredited 'Topics of the Day' article, 'The Future of Aluminium', The Spectator (15 Jul 1893), 77.
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Since [World War I] we have seen the atomic age, the computer age, the space age, and the bio-engineering age, each as epochal as the Bronze Age, the Iron Age, the Renaissance and the Industrial Revolution. And all these have occurred in one generation. Man has stood on the moon and looked back on the earth, that small planet now reduced to a neighbourhood. But our material achievements have exceeded the managerial capacities of our human minds and institutions.
As quoted in Colin Bingham (ed.), Wit and Wisdom: A Public Affairs Miscellany (1982), 227.
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“Bitzer,” said Thomas Gradgrind. “Your definition of a horse.”
“Quadruped. Graminivorous. Forty teeth; namely, twenty-four grinders, four eye-teeth, and twelve incisive. Sheds coat in the Spring; in marshy countries, sheds hoofs, too. Hoofs hard, but requiring to be shod with iron. Age known by marks in mouth.” Thus (and much more) Bitzer.
“Now girl number twenty,” said Mr. Gradgrind. “You know what a horse is.”
Spoken by fictional character Thomas Gringrind in his schoolroom with pupil Bitzer, Hard Times, published in Household Words (1 Apr 1854), Vol. 36, 3.
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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)
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Sophie Germain
Gertrude Elion
Ernest Rutherford
James Chadwick
Marcel Proust
William Harvey
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Carl Gauss
Paul Feyerabend
- 90 -
Antoine Lavoisier
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Charles Babbage
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Euclid
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Robert Bunsen
Frederick Banting
Andre Ampere
Winston Churchill
- 80 -
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Bible
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Jean Lamarck
- 70 -
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- 60 -
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- 50 -
Stephen Hawking
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Henry Adams
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John Dalton
- 40 -
Pierre Fermat
Edward Wilson
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Giordano Bruno
JJ Thomson
Thomas Kuhn
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Archimedes
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- 30 -
Andreas Vesalius
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Richard Feynman
James Hutton
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- 20 -
Carl Sagan
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- 10 -
Aristotle
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