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Home > Category Index for Science Quotations > Category Index A > Category: Ascent

Ascent Quotes (3 quotes)

In Man the brain presents an ascensive step in development, higher and more strongly marked than that by which the preceding subclass was distinguished from the one below it. Not only do the cerebral hemispheres overlap the olfactory lobes and cerebellum, but they extend in advance of the one, and further back than the other. Their posterior development is so marked, that anatomists have assigned to that part the character of a third lobe; it is peculiar to the genus Homo, and equally peculiar is the 'posterior horn of the lateral ventricle,' and the 'hippocampus minor,' which characterize the hind lobe of each hemisphere. The superficial grey matter of the cerebrum, through the number and depth of the convolutions, attains its maximum of extent in Man. Peculiar mental powers are associated with this highest form of brain, and their consequences wonderfully illustrate the value of the cerebral character; according to my estimate of which, I am led to regard the genus Homo, as not merely a representative of a distinct order, but of a distinct subclass of the Mammalia, for which I propose a name of 'ARCHENCEPHALA.'
'On the Characters, Principles of Division, and Primary Groups of the Class MAMMALIA' (1857), Journal of the Proceedings of the Linnean Society of London (1858), 2, 19-20.
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The history of aλronautic adventure affords a curious illustration of the same [dip of the horizon] principle. The late Mr. Sadler, the celebrated aeronaut, ascended on one occasion in a balloon from Dublin, and was wafted across the Irish Channel, when, on his approach to the Welsh coast, the balloon descended nearly to the surface of the sea. By this time the sun was set, and the shades of evening began to close in. He threw out nearly all his ballast, and suddenly sprang upwards to a great height, and by so doing brought his horizon to dip below the sun, producing the whole phenomenon of a western sunrise. Subsequently descending in Wales, he of course witnessed a second sunset on the same evening.
This describes how a rapidly ascending balloonist can see more of a setting sun, from the top down, as the viewer gradually rises more and thus sees further, beyond the curvature of the earth. The sun gradually appears as if at sunrise. It is the reverse of the view of a ship sailing toward the horizon which disappears from its hull up to the tip of the mast. In Outlines of Astronomy (1849), 20. A similar description appeared earlier, in Astronomy (1833), 36, which also footnoted Herschel's comment that he had this anecdote from Dr. Lardner, who was present at the ascent
Science quotes on:  |  Adventure (20)  |  Ballast (2)  |  Balloon (6)  |  Curiosity (49)  |  Descent (8)  |  Dip (2)  |  Evening (9)  |  Height (12)  |  History (151)  |  Horizon (5)  |  Illustration (16)  |  Ireland (2)  |  Phenomenon (113)  |  Principle (96)  |  Sea (56)  |  Sun (109)  |  Sunrise (4)  |  Sunset (6)

What can you conceive more silly and extravagant than to suppose a man racking his brains, and studying night and day how to fly? ... wearying himself with climbing upon every ascent, ... bruising himself with continual falls, and at last breaking his neck? And all this, from an imagination that it would be glorious to have the eyes of people looking up at him, and mighty happy to eat, and drink, and sleep, at the top of the highest trees in the kingdom.
In A Serious Call to a Devout and Holy Life (1732), 168. This was written before Montgolfier brothers, pioneer balloonists, were born.
Science quotes on:  |  Aeronautics (8)  |  Brain (105)  |  Break (18)  |  Climb (6)  |  Day (19)  |  Drink (14)  |  Eating (12)  |  Extravagant (2)  |  Eye (61)  |  Fall (30)  |  Flight (28)  |  Glory (17)  |  Highest (4)  |  Imagination (125)  |  Look (30)  |  Neck (3)  |  Night (24)  |  People (72)  |  Sleep (25)  |  Study (149)  |  Suppose (14)  |  Top (6)  |  Tree (81)


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
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Sophie Germain
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Carl Gauss
Paul Feyerabend
- 90 -
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- 80 -
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- 70 -
Samuel Morse
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Pierre Laplace
Humphry Davy
Thomas Edison
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Carolus Linnaeus
- 60 -
Francis Galton
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- 50 -
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- 40 -
Pierre Fermat
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Thomas Kuhn
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Archimedes
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- 30 -
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- 20 -
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- 10 -
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