Science – Page 31 – artdiamondblog.com

Magdeburg Sphere Let Scientists “See” the Vacuum

(p. 68) When we think of technological advances powering scientific discovery, the image that conventionally comes to mind is a specifically visual one: tools that expand the range of our vision, that let us literally see the object of study with new clarity, or peer into new levels of the very distant, the very small. Think of the impact that the telescope had on early physics, or the microscope on bacteriology. But new ways of seeing are not always crucial to discovery. The air pump didn’t allow you to see the vacuum, because of course there was nothing to see: but it did allow you to see it indirectly, in the force that held the Magdeburg Sphere together despite all that horsepower.

Source:
Johnson, Steven. The Invention of Air: A Story of Science, Faith, Revolution, and the Birth of America. New York: Riverhead Books, 2008.

World Astonished that an American Tradesman Tamed Lightning

(p. 24) Within five years of his speculative note to Collinson, lightning rods had become a common sight on church steeples throughout Europe and America. Franklin’s biographer Carl Van Doren aptly describes the astonishment that greeted these events around the world: “A man in Philadelphia in America, bred a tradesman, remote from the learned world, had hit upon a secret which enabled him, and other men, to catch and tame the lightning, so dread that it was still mythological.”

Source:
Johnson, Steven. The Invention of Air: A Story of Science, Faith, Revolution, and the Birth of America. New York: Riverhead Books, 2008.

Environmentalists Abandon Science

In honor of “Earth Day,” some thoughtful comments by a co-founder of Greenpeace:

(p. A23) In 1971 an environmental and antiwar ethic was taking root in Canada, and I chose to participate. As I completed a Ph.D. in ecology, I combined my science background with the strong media skills of my colleagues. In keeping with our pacifist views, we started Greenpeace.
But I later learned that the environmental movement is not always guided by science. As we celebrate Earth Day today, this is a good lesson to keep in mind.
At first, many of the causes we championed, such as opposition to nuclear testing and protection of whales, stemmed from our scientific knowledge of nuclear physics and marine biology. But after six years as one of five directors of Greenpeace International, I observed that none of my fellow directors had any formal science education. They were either political activists or environmental entrepreneurs. Ultimately, a trend toward abandoning scientific objectivity in favor of political agendas forced me to leave Greenpeace in 1986.
The breaking point was a Greenpeace decision to support a world-wide ban on chlorine. Science shows that adding chlorine to drinking water was the biggest advance in the history of public health, virtually eradicating water-borne diseases such as cholera. And the majority of our pharmaceuticals are based on chlorine chemistry. Simply put, chlorine is essential for our health.
My former colleagues ignored science and supported the ban, forcing my departure. Despite science concluding no known health risks – and ample benefits – from chlorine in drinking water, Greenpeace and other environmental groups have opposed its use for more than 20 years.

For the full commentary, see:

PATRICK MOORE. “Why I Left Greenpeace.” The Wall Street Journal (Tues., April 22, 2008): A23.

An Intellectual Collaboration Beyond the Grave

There is something touchingly noble in this:

(p. 11) There is no direct evidence in the historical record, but it is entirely probable that it was the waterspout sighting that sent Priestley off on his quest to measure the temperature of the sea, trying to marshal supporting evidence for a passing conjecture his friend had made a decade before. Franklin had been dead for nearly four years, but their intellectual collaboration continued, undeterred by war, distance, even death.

Source:
Johnson, Steven. The Invention of Air: A Story of Science, Faith, Revolution, and the Birth of America. New York: Riverhead Books, 2008.

Steven Johnson’s The Invention of Air

Source of book image: http://stevenberlinjohnson.typepad.com/photos/uncategorized/2008/09/10/invention_final_81908.jpg

Steven Johnson’s The Ghost Map, about the determined entrepreneurial detective work that uncovered the cause of cholera, is one of my all-time favorite books, so I am now in the mode of reading everything else that Steven Johnson has written, or will write.
The most recent book, The Invention of Air, is not as spectacular as The Ghost Map, but is well-written on a thought-provoking topic. It focuses on Joseph Priestley’s role in the American Revolution. Priestley is best known as an early chemist, but Johnson paints him as a poly-math whose science was of a piece with his philosophy, politics and his religion.
Johnson’s broader point is that for many of the founding fathers, science was not a compartment of their lives, but part of the whole cloth (hey, it’s my blog, so I can mix as many metaphors as I want to).
And the neat bottom line is that Priestley’s method of science (and polity) is the same broadly empirical/experimental/entrepreneurial method that usually leads to truth and progress.
Along the way, Johnson makes many amusing and thought-provoking observations, such as the paragraphs devoted to his coffee-house theory of the enlightenment. (You see, coffee makes for clearer thinking than beer.)

The book:
Johnson, Steven. The Invention of Air: A Story of Science, Faith, Revolution, and the Birth of America. New York: Riverhead Books, 2008.

Atmospheric Carbon Dioxide that is Probably Not Caused by Human Activity

“This artist’s concept shows a cloudy Jupiter-like planet that orbits very close to its fiery hot star.” Source of caption and image: online version of the NYT article quoted and cited below.

(p. A31) Astronomers testing techniques to search for extraterrestrial life have detected carbon dioxide in the atmosphere of a planet 63 light-years away.

This carbon dioxide, though, is certainly not coming from plants or automobiles. The planet, HD 189733b, is far too large (about the mass of the Jupiter) and too hot (1,700 degrees Fahrenheit) for any possibility of life.

For the full story, see:
KENNETH CHANG. “Carbon Dioxide (No S.U.V.’s) Detected on Distant Planet.” The New York Times (Thurs., December 11, 2008): A31.

“Little Risk the Ice Sheet Will Collapse”

“To probe the underside of Greenland’s glaciers, NASA researcher Alberto Behar released 90 specially tagged rubber ducks into a fissure of the Jakobshavn Isbrae glacier in Greenland, tracking their progress along underground melt-water streams.” Source of caption: typed from print version of the WSJ article quoted and cited below. Source of photo: edited screen capture from the online version of the WSJ article quoted and cited below.

(p. A13) As researchers learn more about the mechanics of Greenland’s glaciers, they are becoming convinced that, by itself, the sub-surface water slide created by so much melting ice may be a short-lived seasonal effect, says University of Washington polar scientist Ian Joughin. The glaciers speed up in the summer but slow down in the fall. If that’s true, there may be little risk the ice sheet will collapse as some scientists recently feared — at least not for the foreseeable future.

For the full story, see:
ROBERT LEE HOTZ. “The Sober Science of Migrating Rubber Duckies; An Armada of Tub Toys Sets Sail in New Research Discipline, ‘Flotsam Science,’ and Helps Unravel Enduring Planetary Mysteries.” Wall Street Journal (Mon., November 14, 2008): A13.

“A Splendid Birthday Present” for Charles Darwin

Source of the book image: http://images.barnesandnoble.com/images/34510000/34519930.jpg

(p. A13) . . ., on Feb. 12, biologists the world over will celebrate Charles Darwin’s 200th birthday. Throughout the year, at festivals galore marking his bicentennial, “On the Origin of Species,” a mere 150 years old, will be hailed as one of the greatest works in the history of the sciences.
. . .
Mr. Coyne begins with a succinct account of what is at stake. “Life on earth evolved gradually beginning with one primitive species — perhaps a self-replicating molecule — that lived more than 3.5 billion years ago; it then branched out over time, throwing off many and diverse species; and the mechanism for most (but not all) of evolutionary change is natural selection.”
Darwinism is thus a claim with several basic components, and the book is structured by carefully exhibiting the evidence for each. Making that structure explicit allows readers to recognize just where they are in the argument. As they follow Mr. Coyne’s parade of evidence — his discussions of the fossil record, of vestigial traits, of the ways in which living things constantly make novel use of the bits and pieces they have inherited, of the distribution of plants and animals — the components of Darwin’s thesis are sequentially supported. We have a list of things to be shown, they are shown and the truth of evolution is established.
. . .
Yet will any defense of Darwin, however painstaking and lucid, succeed in substantially modifying the public-opinion survey results? Mr. Coyne has seen the opposition first-hand, recounting his experience of talking to a group of businessmen about evolution and eliciting the reaction: “Very convincing — but I don’t believe it.” This sort of skepticism is often rooted in a sense that Darwinism somehow discredits morality — a perception that Mr. Coyne argues against, cogently, in a brief final chapter. But he does not seem to appreciate the depth of popular hostility toward Darwin.
. . .
Whether or not he succeeds in bringing Americans en masse to learn to love evolution, he has offered Darwin a splendid birthday present.

For the full review, see:
PHILIP KITCHER. “Bookshelf; Following the Evidence.” Wall Street Journal (Thurs., JANUARY 29, 2009): A13.
(Note: ellipses added.)

The reviewed book is:
Coyne, Jerry A. Why Evolution Is True. New York: Viking, 2009.

A classic paper on whether the speed of a scientist’s acceptance of evolution was related to the scientist’s age, is:
David L. Hull, Peter D. Tessner and Arthur M. Diamond. “Planck’s Principle: Do Younger Scientists Accept New Scientific Ideas with Greater Alacrity than Older Scientists?” Science 202 (November 17, 1978): 717-723.

Leeuwenhoek’s Great Discovery Was at First Rejected by the “Experts”

In the passage quoted below, Hager discusses the reception that Leeuwenhoeck received to his first report of the “animalcules” seen under his microscope:

(p. 42) He hired a local artist to draw what he saw and sent his findings to the greatest scientific body of the day, the Royal Society of London.

(p. 43) Van Leeuwenhoek’s raising of the curtain on a new world was greeted with what might kindly be called a degree of skepticism. Three centuries later a twentieth-century wit wrote a lampoon of what the Royal Society’s secretary might well have responded:

Dear Mr. Anthony van Leeuwenhoek,
Your letter of October 10th has been received here with amusement. Your account of myriad “little animals” seen swimming in rainwater, with the aid of your so-called “microscope,” caused the members of the society considerable merriment when read at our most recent meeting. Your novel descriptions of the sundry anatomies and occupations of these invisible creatures led one member to imagine that your “rainwater” might have contained an ample portion of distilled spirits—imbibed by the investigator. Another member raised a glass of clear water and exclaimed, “Behold, the Africk of Leeuwenhoek.” For myself, I withhold judgement as to the sobriety of your observations and the veracity of your instrument. However, a vote having been taken among the members—accompanied, I regret to inform you, by considerable giggling—it has been decided not to publish your communication in the Proceedings of this esteemed society. However, all here wish your “little animals” health, prodigality and good husbandry by their ingenious “discoverer.”

The satire was not far from the truth. Although very interested in the Dutchman’s discoveries, so many English scientists were doubtful about his reports that van Leeuwenhoek had to enlist an English vicar and several jurists to attest to his findings. Then Hooke himself confirmed them. All doubt was dispelled.

“In Spite of the Economic Crisis and Unemployment . . . Civilization’s Progress is Going Faster and Faster”

The Palace of Discovery mentioned in the passage below was a part of the 1937 Paris Exposition.

(p. 206) The mastermind behind the Palace of Discovery, French Nobel Prize laureate Jean Perrin, wrote, “In spite of the wars and the revolutions, in spite of the economic crisis and unemployment, through our worries and anxieties, but also through our hopes, civilization’s progress is going faster and faster, thanks to ever-more flexible and efficient techniques, to farther- and farther-reaching lengths. . . . Almost all of them have appeared in less than a century, and have developed or applied inventions now known by all, which seem to have fulfilled or even passed the desires expressed in our old fairy tales.”

Source:
Hager, Thomas. The Demon under the Microscope: From Battlefield Hospitals to Nazi Labs, One Doctor’s Heroic Search for the World’s First Miracle Drug. New York: Three Rivers Press, 2007.
(Note: ellipsis in the title is added; ellipsis in the quoted passage is in the original.)