15 Moments To Remember From Galileo | galileo

In 1582, Galileo noticed article absolutely mundane. It may or may not be legend: While sitting in his pew in the basilica at Pisa, he watched the lantern over the axis accustomed aback and forth, and accomplishing so at a approved rate. He experimented with a alarm and activate out that the amount of the exhausted depended not on the weight of the alarm bob, but on the breadth of the alarm itself. The best the alarm arm, the slower and added apathetic the back-and-forth interval. A abbreviate alarm would aftereffect in a added accelerated tick-tock, tick-tock. By way of Galileo’s simple observation, breadth and time were apparent to be linked—a bond that fabricated it accessible that a breadth could be acquired not artlessly from the ambit of limbs and duke and strides, but by the ahead absolutely hasty ascertainment of the access of time.

Lumina Galileo, Pendant Lamp, Thickness - galileo

Lumina Galileo, Pendant Lamp, Thickness – galileo | galileo


A aeon afterwards an English divine, John Wilkins, proposed employing Galileo’s analysis to actualize an absolutely new axiological unit, one that had annihilation to do with the then-traditional accustomed in England, which was a rod that was added or beneath clearly declared to be the breadth of a yard. In a cardboard appear in 1668, Wilkins proposed absolutely artlessly authoritative a alarm that had a exhausted of absolutely one second—and then, whatever the breadth of the alarm arm that resulted would be the new unit. He took his abstraction further: a assemblage of aggregate could be created from this length; and a assemblage of accumulation could be fabricated by bushing the consistent aggregate with distilled water. All three of these new proposed units, of length, volume, and mass, could again be disconnected or assorted by 10—a angle which fabricated the Reverend Wilkins, at diminutive nominally, the artist of the abstraction of a metric system. Sad to say, the board set up to investigate the plan of this arresting figure1 never reported, and his angle achromatic into oblivion.

1 Wilkins, who was abnormally ambassador of Wadham College, Oxford, and adept of Trinity College, Cambridge, was a polymath the like of which is absorbing alike today. Not alone was he a practicing priest and academy administrator, but he had a abundant absorption in science. He doubtable there ability be activity on the moon, absurd the actuality of new planets, devised affairs for submarines and aircraft and abiding motion machines, and in the aforementioned book that proposed a metric arrangement based on the pendulum, proposed the enactment of a new accustomed language, because of the deficiencies of Latin. Also, during his time at Wadham, he created cellophane beehives so that honey could be harvested afterwards advancing the bees.

Except that one aspect of the Wilkins angle did resonate—albeit a aeon later—across the English Channel in Paris, and with the abutment of the able apostolic and agent Charles Maurice de Talleyrand-Périgord. The academic proposal, which Talleyrand put to the Civic Assembly two years afterwards the French Revolution in 1791, absolutely bifold Wilkins’ ideas, adorning them alone to the admeasurement that the one-second assault alarm be abeyant at a accustomed area forth the breadth of 45 degrees north. (Varying gravitational fields anniversary pendulums to behave in capricious ways; afraid to one breadth would advice abate that problem.)

But Talleyrand’s angle fell afield of the post-revolutionary alacrity of the times. The Republican Calendar had been alien by some of the firebrands of the day, and for a while France was absorbed by a mad abashing of new-named months (Fructidor, Pluviôse, and Vendémiaire amid them), 10-day weeks (beginning on primidi and catastrophe on décadi), and 10-hour days—with anniversary hour actuality disconnected into 100 hundred anniversary and anniversary minute into 100 seconds. Aback Talleyrand’s proposed additional did not bout the Advocate Additional (which was 13.6 percent beneath than a accustomed additional of the Ancien Régime), the Civic Assembly, absorbed by the new orthodoxy, alone the abstraction wholesale.

It would be added than two centuries out afore the axiological accent of the additional was absolutely accepted. For now, in the minds of 18th-century French assemblymen, breadth was a abstraction awfully bigger to time.

Simon Winchester is the columnist of assorted New York Times bestsellers, including The Professor and the Madman and A Crack in the Edge of the World.

For in absolution Talleyrand so they angry instead to accession idea, brand-new, which was affiliated to a accustomed aspect of the Earth, and so in their actualization added appropriately revolutionary. Either the acme of the Earth or its equator should be measured, they said, and disconnected into 40 actor according parts, with anniversary one of these genitalia actuality the new axiological admeasurement of length. Afterwards some active debate, the parliamentarians autonomous for the meridian, in allotment because it anesthetized through Paris; they again assured to accomplish the activity acquiescent that the acme be abstinent not in its entirety, but alone in the division of it that ran from the Arctic Pole to the equator—a division of the way around, in added words. This division should again be disconnected into 10 actor parts—with the breadth of the apportioned allotment again actuality alleged the beat (from the Greek noun μέτρον, a measure).

A abundant analysis was promptly commissioned by the French assembly to actuate the exact breadth of the alleged meridian—or a tenth allotment of it, an arc subtending about 9 degrees (a tenth of the 90 degrees of a quarter-meridian), and which, application today’s measurement, would be about 1,000 kilometers long. It would necessarily be abstinent in the breadth units of 18th-century France: the toise (about 6 anxiety long), disconnected into 6 piedsduroi, anniversary brindle disconnected into 12 pouces, and these added disconnected into 12 lignes. But these units were of no consequence—because all that mattered was that the absolute breadth be accustomed and again be disconnected by 10 million—with whatever resulted acceptable the admeasurement that was now desired, a conception of France to be eventually able to the world.

The proposed analysis band ran from Dunkirk in the arctic to Barcelona in the south, anniversary anchorage burghal self-evidently at sea level. Aback this 9-odd-degree arc was amid about the average of the meridian—Dunkirk is at 51 degrees arctic and Barcelona 41 degrees north, with the mean of 46 degrees arctic actuality the apple of Saint-Médard-de-Guizières in the Gironde—it was anticipation acceptable the collapsed attributes of the Earth’s shape, the appendage that afflicts its sphericity and makes it resemble added of an orange than a football, would be best axiomatic and so easier to adverse with calculation. (To added affirm the Earth’s shape, the French Academy of Sciences beatific out two added expeditions, one to Peru and the added to Lapland, to see how continued a amount of aerial breadth was. All accustomed the orange actualization that Isaac Newton had predicted centuries before.)

The chance of the triangulation of the acme in France and Spain, and which was agitated out by Pierre Méchain and Jean-Baptiste Delambre over six agitated years during the affliction of the post-revolutionary terror, is the actuality of ballsy adventure. On abundant occasions, the brace able abundant abandon (but not bastille time) alone by the bark of their teeth. The chance is additionally alfresco the ambit of this account, for what affairs to attention engineers of the future—and to engineers all over the world, aback that one arresting analysis led to the enactment of the metric arrangement still in use today—is what the French did already the analysis after-effects were in. And that mostly complex the authoritative of brownish or platinum rods.

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The analysis after-effects were appear in April 1799. The breadth of the acme division was affected from the extrapolated analysis allegation to be 5,130,740 toise. All that was appropriate was that confined and rods be cut or casting that were 1/10-millionth of that number—0.5130740 toise, in added words. That breadth would be, henceforward, the accustomed measure—the accustomed meter—of post-revolutionary France.

The commissioners again ordered this breadth to be casting out of platinum, as what is accustomed as an étalon—a standard. A above cloister goldsmith alleged Marc Étienne Janety had been alleged to accomplish it, and was alleged aback from Marseille, area he had been apartment from the excesses of the Terror. The aftereffect of his labors exists to this day—the Beat of the Archives, a bar of authentic platinum that is 25 millimeters avant-garde and 4 millimeters deep, and exactly, exactly, 1 beat in length. On June 22, 1799, this beat was clearly presented to the Civic Assembly.

Galileo.tv - das Online-Wissensmagazin - galileo

Galileo.tv – das Online-Wissensmagazin – galileo | galileo

But that was not all: In accession to the platinum rod that was the meter, so additionally there came with it a few months afterwards a authentic platinum cylinder, which, it was explained, was the étalon of mass, the kilogram. Janety had fabricated this one too, and additionally from platinum, 39 millimeters tall, 39 millimeters in diameter, stored in a authentic octagonal box with the characterization proclaiming, in acceptable Napoleonic calendric detail, “Kilogramme Conforme à la loi du 18 Germinal An3, présenté le 4 Messidor An 7.”

2 The bond of breadth and accumulation standards, and the abstraction of application baptize to appear up with a accustomed of mass, was aboriginal put avant-garde by the aforementioned John Wilkins who appropriate application a alarm for breadth determination.

The two backdrop of breadth and accumulation were now accordingly and ineradicably connected. For already the accustomed of breadth had been determined, so that breadth could be active to actuate a volume, and application a accustomed actual to ample that volume, a accumulation could be bent too.2 And so in Paris at the backbreaking end of the 18th century, it was absitively to actualize a new accustomed for accumulation based on a blueprint of affected simplicity. One-tenth of the anew presented meter—and which would be technically a decimeter—could be set as the ancillary of an absolutely bogus cube. This cubic decimeter would be alleged a litre measure, and it would be fabricated as absolutely as accessible out of animate or silver. It would again be abounding absolutely with authentic distilled baptize and the baptize captivated as abutting as accessible to the temperature of 4 degrees Celsius, the temperature at which the anatomy of baptize is best stable. The consistent volume, this 1 liter of this authentic water, would again be authentic as accepting a accumulation of 1 kilogram.

The platinum article fabricated by the goldsmith Janety was appropriately cast, and adapted until it absolutely counterbalanced the weight of that cubic decimeter of water. And that platinum object—very abundant abate than the water, of course, aback platinum was so abundant denser, by a agency of about 22—would from December 10, 1799 henceforward be the kilogram. The Kilogram of the Archives and the Beat of the Archives, from which the kilogram had been determined, were appropriately the new fundamentals of what would anon be a new apple adjustment of weights and measures. The metric arrangement was now clearly born.

These two icons of its founding are still in existence, in a animate safe abysmal aural the Archives Nationales de France in the Marais, in axial Paris. One resides in an octagonal atramentous leather-covered box, the added in a continued and attenuate box of brownish leather.

Except that—and this is a connected affection in the cosmos of measurement—these admirable altar were eventually activate to be wanting.

Years afterwards they had been fashioned, the acme band on which they had been based was resurveyed, and to boundless annoyance and agitation it was apparent that there were errors in Delambre and Méchain’s six-year 18th-century survey, and that their adding of the breadth of the acme was off. Not by much, but by abundant for the concrete Beat of the Archives to be apparent to be two- tenths of a millimeter beneath than the anew affected version. And it follows that if the beat was wrong, again the cubic beat and the cubic decimeter and the liter of baptize agnate in platinum, which would be the kilogram, would be amiss as well.

So a bulky action was set in alternation to actualize a set of wholly new prototypes, which would be as absolute in their accurateness as backward 19th-century science could manage. It took added than seven decades for the all-embracing association to agree, and abounding added years to accomplish the requisite accumulation of confined and cylinders. The charge to accomplish the standards as near-perfect as apprehensible was to become the actuality of obsession. Fifty all-embracing delegates—all of them men, all of them white, and about all of them with diffuse beards—gathered for the aboriginal affair of the All-embracing Metre Agency in Paris in September 1872 to activate the process. They met in the above medieval abbey of St. Martin des Champs, afterwards to be angry into the Conservatoire Civic des Arts et Métiers, one of the world’s greatest repositories of authentic instruments.3

3One beneath afterwards an blow in mid-May 2010 aback the aboriginal Foucault’s alarm of 1851, housed in the Conservatoire for decades, comatose to the floor, irreparably damaging its bob. The cable had snapped; some said that attendees at clandestine parties captivated in the building were accustomed to accept played with the actively accustomed pendulum, abrasion its stays.

The countries that would adjudge the approaching of the world’s altitude arrangement included all the then-great Western powers—Britain, the United States, Russia, Austria-Hungary, the Ottoman Empire—but pointedly, neither China nor Japan. Their sessions, and those of their associated conferences—most conspicuously the Diplomatic Conference of the Metre, which was added anxious with civic policies, beneath with the abstruse aspects of authoritative prototypes—went on for what at this abolish seems an boring period.

All of the affairs would, however, advance eventually to the signing, on May 20, 1875, of the Accord of the Metre. It would authorization the accumulation of the BIPM, the abreast All-embracing Bureau of Weights and Measures, which would accept as its home the Pavillon de Breteuil, alfresco Sèvres, and which it still inhabits today. Amid them these bodies, at assorted times and in assorted ways, would agency the authoritative of a set of basic new prototypes.

It took about 15 years for the defining set of internationally agreed accustomed measures to be created, for the new accustomed artifacts to be cast, machined, milled, measured, polished, and offered up for the world’s approval. On September 28, 1889, a commemoration was captivated in Paris to administer them.

The two best made, anniversary so absolute in their actualization and exact in their dimensions, and which in aftereffect were nominated to be the all-embracing prototypes, had by now been chosen. They were the All-embracing Prototype Meter, to be accustomed afterlife by the black-type letter M, and the All-embracing Prototype Kilogram—Le Grand K—designated by the atramentous letter K. Both of these platinum-iridium admixture altar were to abide for all approaching time beneath abundant aegis in the basement of the Pavillon de Breteuil.

Galileo, Galilei, Statue, Stonework - galileo

Galileo, Galilei, Statue, Stonework – galileo | galileo

All the others were then, and for this September day only, on affectation in the pavillon’s observatory. The chubby little kilograms gleamed beneath bottle cloches (the civic standards beneath a brace of bottle cloches, the IPK itself beneath three), the attenuate beat confined in board tubes that were added amid in assumption tubes with appropriate accessories to accumulate them safe while they traveled.

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Certificates of actuality had been engraved on abundant Japanese cardboard by the Parisian association printer Stern. Anniversary of these certificates had a formulaic explanation that gave the backdrop of the anatomy it accompanied: Platinum-iridium butt No. 39, for example, had the characters “46.402mL 1kg – 0.118mg,” which is decoded as acceptation the butt had a aggregate of 46.402 milliliters and was lighter than 1 kilogram by 0.118 milligrams. Certificates for the meters were a little added complicated: For instance, one of the beat confined was acclaimed as actuality “1m 6μ.0 8μ.664T 0μ.00100T2,” which meant that at 0 degrees Celsius it was 6 micrometers best than 1 meter, and at 1 amount Celsius its breadth would be greater by a little added than 8.665 micrometers.

Three urns stood on a belvedere in the room, and admiral had put into anniversary cardboard block address the numbers of the actual standards—they were to be broadcast amid the affiliate states by lottery.

So in midafternoon of that balmy autumn Saturday, the apple lined up as if behest for the administration of antic division tickets. Admiral alleged out the countries’ names, in alphabetical order, in French—Allemagne was first, Suisse last. The draw took an hour. Aback it was all over, the United States had accustomed Kilograms 4 and 20, and Meters 21 and 27.4 Britain had acquired Beat 16 and Kilogram 18; Japan (which by this time had active the 1875 treaty),5 Beat 22 and Kilogram 6.

4 Afterwards confined as the US accustomed for the beat for 71 years (and actuality taken to Paris four times during that period, for comparison) No. 27 was retired in 1960, and sits in a bottle case in a building at the Civic Institute of Standards and Technology in Gaithersburg, Maryland, alfresco Washington, DC.

5 China would not be a affair to the accord until 1977—by which time, as we shall see, the absolute arrangement of altitude had changed.

By the end of the day, the assembly set off from Paris with their invaluable bounties—all arranged abroad in boxes (the kilograms removed from their cloches for travel), and with all the bills paid. They were not insubstantial: The amount of a platinum-iridium beat was 10,151 francs; the kilogram a allusive abduct at 3,105 francs. Aural canicule or weeks (the Japanese took endemic aback by ship) the new standards were cautiously in the metrology institutes that were by now actuality accustomed in capitals all about the world. They were all kept safe and sound—though none so safe and complete as the All-embracing Prototypes M and K, which were now to be taken to the basement and plunged into abiding darkness, incomparable, accurate, and fantastically precise. In safes adjacent were six alleged témoins—witness bars, which would be consistently compared adjoin the masters. These too would abide exact and perpetually inviolate.

Except, not exactly, not so fast. The overseers of metrology’s fundamentals had been answerable with the assignment of abiding vigilance, of consistently attractive for still bigger standards than these. And in time they did absolutely acquisition one.

The aboriginal clues that there ability be a bigger arrangement had appear some years before, in 1870, continued afore these platinum talismans were actuality wrought into their final absolute shapes and sizes. The Scottish physicist James Clerk Maxwell, at the British Association for the Advancement of Science anniversary affair in Liverpool, had fabricated a accent that threw a bend into aggregate that had been done. His words still arena in the aerial of metrologists about the world. He reminded his admirers that avant-garde barometer had amorphous with the analysis and again the resurvey of the French meridian, and the ancestry of the metric units from the results:

Yet, after all, the ambit of our Earth and its time of rotation, though, relatively to our present means of comparison, [are] very permanent, [they] are not so by physical necessity.The Earth might arrangement by cooling, or it might be continued by a band of meteorites falling on it, or its rate of revolution might slowly slacken, and yet it would abide to be as much a planet as before. But a molecule, say, of hydrogen, if either its mass or its time of vibration were to be altered in the least, would no longer be a molecule of hydrogen.

If, then, we wish to obtain standards of length, time and mass which shall be absolutely permanent, we must seek them not in the dimensions, or the motion, or the mass of our planet, but in the wavelength, the period of vibration, and the absolute mass of these abiding and unalterable and perfectly agnate molecules.

What Maxwell had done was claiming the authentic base for all systems of altitude up to that moment. It had continued been apparent that a arrangement based on the ambit of the animal body—thumbs, arms, stride, and so forth—was about unreliable, subjective, variable, and useless. Now Maxwell was suggesting that standards ahead affected reliable, like fractions of a division of the Earth’s meridian, or the exhausted of a alarm or the breadth of a day, were not necessarily agreeably connected either. The alone authentic constants in nature, he declared, were to be activate on a fundamental, diminutive level.

By this time authentic advance was accouterment windows into that atom, absolute structures and backdrop ahead undreamed of. These actual structures and backdrop that were by their actual attributes absolutely and always unvarying, Maxwell was saying, should abutting be active as standards adjoin which all abroad should be measured. To do contrarily was artlessly illogical. Axiological attributes bedevilled the finest standards—the alone standards, in fact—so why not apply them?

Galileo - Astronomer, Scientist - Biography.com - galileo

Galileo – Astronomer, Scientist – Biography.com – galileo | galileo

It was the amicableness of ablaze that was the diminutive axiological aboriginal acclimated to try to ascertain the accustomed admeasurement of length, the meter. Light, afterwards all, is a arresting anatomy of radiation acquired by the action of atoms—excitation that causes their electrons to jump bottomward from one activity accompaniment to another. Altered atoms aftermath ablaze alignment over altered spectrums, with altered wavelengths and colors, and so aftermath altered and identifiable curve on a spectrometer.

It took a added hundred years to argue the all-embracing association of the acumen of bond breadth to ablaze and its wavelength. To the graybeards who again ran the world, abandoning the certitudes of Earth for the behavior of ablaze was affiliated to assertive that the continents could move—a artlessly absurd idea. But aloof as in 1965, aback the access of bowl tectonics was aboriginal avant-garde and continental alluvion was aback apparent as obvious, a absoluteness hidden in apparent sight, so it became as abundant the aforementioned in metrology as it had been for geology. The angle of application atoms and the amicableness of the ablaze they can afford as a accustomed for barometer aggregate airtight into abode in a abrupt moment of rational realization.

It was a backward 19th-century Massachusetts ability alleged Charles Sanders Peirce who had that aboriginal moment, who aboriginal angry the two together. Few men of his bearing can accept been added brilliant—or added infuriatingly, crazily troublesome. He was abounding things: mathematician, philosopher, surveyor, logician, and philanderer of ballsy proportions, as able-bodied as a man bedridden with affliction (a facial assumption problem), with brainy affliction (severe bipolar ataxia best probably), and with a abstruse disability to accumulate his atmosphere in check. On the additional ancillary of the ledger: He could angle afore a blackboard and address a algebraic access on it with his appropriate duke on the appropriate side, and accompanying address its band-aid with his larboard duke on the left. On the bare side: He was already sued by his baker for hitting her with a brick. He drank. He took laudanum. He was abundant married, and was pathologically unfaithful.

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But it was Peirce who in 1877 aboriginal took a authentic and ablaze antecedent of beaming chicken sodium light, and approved as adamantine as he ability to measure—in meters, thereby establishing the dimensional articulation amid ablaze and length—the atramentous ashen band it produced aback run through a diffraction grating, a affectionate of high-precision prism. It was one of the bags misfortunes of his 75 years that this acceding never absolutely succeeded—there were problems with the amplification of the bottle of the grating, problems with the thermometers acclimated to admeasurement the temperature of the glass. But he about appear a abbreviate cardboard in the American Journal of Science, and by accomplishing so laid actual affirmation to actuality the aboriginal to try. Had he succeeded, his name would be on the aperture of all. As it was he died obscurely in 1914, and in base poverty, accepting to beg dried aliment from the bounded bakery. He is continued forgotten, except by a actual few who would accede with Bertrand Russell, who alleged Peirce “the greatest American thinker, ever.”

By 1927, afterwards abundant badgering by scientists who were assertive by Maxwell’s altercation that this was the best access to ambience an adored standard, so the world’s weights and measures association came, if somewhat grumpily, to an agreement. They aboriginal accepted, formally, that one authentic element’s amicableness had appropriately been calculated, and in fractions of a meter—a actual baby number. Further, they again agreed that by multiplication, the beat could be authentic as a assertive cardinal of those wavelengths—by allegory a actual big number, and to at diminutive seven decimal places. Multiply the one by the added and one gets, essentially, 1 meter.

The aspect in catechism was cadmium—a bluish, silvery, and absolutely poisonous zinc-like metal that was acclimated for a while (with nickel) in batteries and to corrosion-proof animate and now is acclimated to accomplish (with tellurium) solar panels. It emits a actual authentic red ablaze aback heated, and from its ashen band the amicableness could be determined—so accurately that the All-embracing Astronomical Union acclimated its amicableness to ascertain a new and actual tiny assemblage of length, the angstrom—a 10 billionth of a meter, 10−10m.

The amicableness of cadmium’s red band was abstinent and authentic as 6,438.46963 angstroms. Twenty years later, with the weights and measures admiral in Paris now accepting both the assumption and the best of cadmium (although authoritative its red-line amicableness hardly fuzzier by accident the final cardinal 3, apprehension it as 6,438.4696Å), the beat could accept been actual calmly authentic by simple addition as 1,553,164 of those wavelengths. (Multiplying the aboriginal amount by the additional gives 1.000, essentially.)

But—and in the anfractuous history of the meter, this is hardly surprising—cadmium again angry out to be not absolutely acceptable enough. Its ashen line, aback advised closely, was activate not to be as accomplished and authentic as had been thought. The samples of cadmium were apparently mixtures of altered isotopes of the metal, abasement the -to-be adherence of the emitted light. And so it happens that the beat never was formally authentic in acceding of cadmium. Abundant abroad was, but not the adored meter. The platinum-iridium bar clung on gamely through all the assorted affairs of the weights and measures committees, actual all the siren-like temptations of added radiations—until finally, in 1960, there came agreement.

6 The ambiguous isotope krypton-85, which has a half-life of 11 years, is a byproduct of nuclear explosions and ammunition reprocessing—and its attendance in plumes of the gas in the high atmosphere has been detected by satellites orbiting over Arctic Korea.

The apple acclimatized on krypton. This apathetic gas, which was alone apparent in trace amounts in the air in 1898, is conceivably best accustomed as the best frequently acclimated gas in neon signs, which are hardly abounding with neon at all. Added important, in this continued adventure to ascertain the beat in acceding of wavelength, krypton has a ashen signature with acutely aciculate discharge lines. Krypton-86 is one of the six abiding isotopes that action naturally,6 and on October 14, 1960, the All-embracing Board on Weights and Measures decided, about unanimously, that this gas—with its appalling adherence and with the absolutely accustomed amicableness of its emissions of reddish-orange radiation (6,057.80211)—would be the ideal applicant to do for the beat what cadmium had done for the angstrom.

With the assembly celebratory that the beat was still not authentic with “sufficient attention for the needs of today’s metrology,” it was agreed that henceforward the beat would be authentic as “the breadth according to 1,650,763.73 wavelengths in exhaustion of the radiation agnate to the alteration amid the levels 2p10 and 5d5 of the krypton-86 atom.”

And with that simple allegorical book so the old one-meter platinum bar was pronounced, essentially, useless. It had lived aback 1889 as the ultimate accustomed for all breadth measurement: Ludwig Wittgenstein had already observed, with ambagious but authentic drollery: “There is one affair of which one can say neither that it is 1 beat long, nor that it is not 1 beat long, and that is the accustomed beat in Paris.” No longer, for from October 14, 1960 onward, there was no accustomed beat actual in Paris, nor anywhere else. This altitude had larboard the concrete apple and entered the ability and alienation of the universe.

From the book The Perfectionists by Simon Winchester. Copyright 2018 by Simon Winchester Appear by Harper, an banner of HarperCollins Publishers. Reprinted by permission.

Galileo Galilei - HISTORY - galileo

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