A Daily History of Holes, Dots, Lines, Science, History, Math, Physics, Art, the Unintentional Absurd, Architecture, Maps, Data Visualization, Blank and Missing Things, and so on. |1.6 million words, 7500 images, 4.9 million hits| Press & appearances in The Times, Le Figaro, Mensa, The Economist, The Guardian, Discovery News, Slate, Le Monde, Sci American Blogs, Le Pont, and many other places… 5000+ total posts since 2008.

  • Lethal Teeth & Causes of Death in London; Milk Leg, Breakbone Fever and Eel Thing. The Death List for 1665

    JF Ptak Science Books LLC  Post 464

    Blog--bills of mortality
     Coming on the heels of the only post that I’ve made on teeth is this happy
    element, a brief mention of lethal teeth in London in 1665. The listing of the death and
    its introduction (if not the actual dead themselves) comes in the form of a
    publication called The London Bills of Mortality, which was begun (so it seems)
    in 1538.  As an instrument of society the
    Bills were more for legal ramifications than for compiling medical
    information.  The Bill was a necessary
    element for legal burial and the transfer of an estate, composed to make sure
    (or for extent possible at this time) that death had indeed occurred and that
    the legal course could be enacted to disassemble the accumulated physical life
    of the decedent.  The weekly reporting
    and compilations must’ve been wearying, and I imagine that this was not the
    most auspicious or desirable job to have, wringing in the newly dead.  Death’s accounting procedure grew more
    systematized as time wore on, getting a more formal approach as early as
    1603.  And it was not in every English parish
    that the cause of death was recorded, and the recorders were hardly a army of medical
    experts—causes of death were sometimes accurate, sometimes not, sometimes
    whimsical and sometimes all or none of the above.

    The list below attests to a somewhat poetical bent in the naming of lethal
    afflictions; of course most meant something immediate and understandle to the
    reader in 1665, though today many of the names seem quire airy and adventurous,
    hardly things to actual die of.  The list
    comes from the groundbreaking work of London haberdasher and man of
    semi-science, John Graunt, who in 1662 published Natural and Political
    Observations … on the Bills of Mortality
    (1662):  it was a tremendously important work and a
    foundation stone in statistical applications in health and epidemiology, as
    Graunt tried to organize and interpret the collected data. 

    Again, my attraction to this all stems from yesterday’s post on the question
    of the existence of teeth in the Renaissance—“teeth” is listed as a cause of
    death in 39 of these cases, the 6th leading cause of death among the
    39 causes listed.  I guess death might’ve
    been caused by a systemic infection caused by a rotten tooth ; or  perhaps the tabulator observed a dead body,
    saw a mouthful of bad teeth and nothing else obviously wrong with the body, and
    thus dubbed the cause of death as the most heinous looking thing that could be found.

     

    Abortive
    Aged
    Ague
    Apoplexy
    Asthma
    Bloody Flux
    Cancer
    Childbed
    Chrisoms
    [1]
    Colick
    Consumption
    Convulsion
    Dropsie
    Evil
    Fever
    French-Pox
    Gangrene
    Gout
    Griping in the Guts
    Headmouldshot
    [2]

    3
    52
    12
    1
    2
    1
    4
    4
    2
    2
    78
    112
    26
    1
    76
    2
    1
    1
    14
    2

    Jaundies
    Imposthume
    [3]
    Mortification
    Plurisie
    Rash
    Rheumatism
    Rickets
    Rising of the Lights
    [4]
    Rupture
    Small-Pox
    Stilborn
    Stone
    Stoppage in the Stomach
    Suddenly
    Teeth
    Thrush
    Tissick
    [5]
    Twisting of the Guts
    Ulcers

    1
    2
    7
    2
    1
    1
    1
    1
    1
    54
    9
    2
    2
    1
    39
    1
    5
    6
    1

    A few of the obscure terms explained:

    Ague: 
    deep fever
    Body Flux: sepsis? 
    Childbed: 
    a baby or mother who dies during childbirth
    Crisoms: 
    refers to a white baptisimal robe worn by an infant, meaning that this
    was a very young baby born    before baptism occurred.
    Dropsie: 
    lethal inflammation or edema
    French-pox: 
    syphilis (called “French” because of a decimating outbreak of teh
    disease in the French army.  That, or the
    prescribed treatment, which was the ingestion of mercury. 
    Headmouldshot: edema of the brain
    Imposthume: Abcesses or cysts
    Rising of the Lights:  inflammation of the lungs or general lung
    problesms
    Thrush—an infection of the mouth (especially
    in babies).
    Tissixk: 
    tuberculosis

    According to the website Magic-Nation “other causes of death included affrighted, bladder in the throat, breakbone
    fever, canine madness, commotion, eel thing, frogg, gathering, grocer’s itch,
    hectic fever, kink, milk leg, screws, stranguary, stuffing, rag picker’s
    disease, St. Anthony’s fire, tympany, worm fit, wolf, and being planet struck”.
    Most of these I have little  insight on,
    and even though they caused someone’s death, they still have a lilting, lyrical
    quality about them.  I particularly like
    and am curious about “eel thing”, “milk leg”, and “Stuffing”

  • Women in the War Effort: London, 1918

    JF Ptak Science Books LLC  Post 465
    0 blog jan 10 brit women strt371

    In England,
    women were welcomed to the (paid) workforce during the years of the First World
    War (1914-1918)—their employment in traditionally male positions enabled those
    they replaced to go out to the front and die for their country.  Thus the women seen here in the News Photo
    Service Agency photograph (taken in 1918), working at spraying tar in the
    streets of London,
    were appreciated, and tolerated.  For
    women in England the War
    blasted away the contrivances of formally scheduled employment:  something like 12% of fall women in England were
    working as servants and house cleaners.  
    Come the War, women were offered jobs of revolutionary stature in a wide
    range and variety of work.  The Civil
    Service employment for women went from 33,000 in 1911 to 102,000 in 1921, and trade
    union membership rose 160% (357,000 in 1914 to 1,000,000 in 1918 (with men
    showing a 44% increase at the same time); for the most part, though, employers
    took advantage of the situation, and the women still generally earned less than
    half of the salary as comparable male workers did (or the men they
    replaced). 

    0 blog jan 10 brit women strt372

    When the end of the War came,
    so did the appreciation for the women replacement workers—there was bitter feelings
    in the post-war period because of the weak British economy and a scarcity of
    jobs.  So the women who took the jobs of men
    to help the country’s war effort and free up hundreds of thousands of men for
    war service became an atavistic action, “taking” the jobs of men who had gone
    out to fight for their country. This of course cost many women their jobs, but
    the damage had already been deeply done to the pre-1914 British world of the
    sexual politics of business-being-done, though it would take World war Ii to
    really ingrain the appearance of women in the workforce into the national
    psyche.

    (Madonna of the tars, right)

    0 blog jan 10 brit women strt373

  • Looking into the Future, a Little: the Edge’s Survey for 2008

    JF Ptak Science Books LLC  Post  465
    Wordle--the edge future JPG

    This is a list of wide-thinking thinkers
    ideas about revolutionary scientific changes will come in the next 20-50 years,
    an outline list of the author and subjects appearing below.  There are 157 entries, and I’ve included a
    link to the full text HERE so that the full entry can be read.  I haven’t read them all—the full text runs
    about 150k words—though what I’ve picked around so far looks not terribly inspired
    in spite of the high-pop value of the assembly. 
    I think that if you placed yourself back in time somewhat and viewed these
    from a 1980’s mindset (and upping the 20-50 year timeframe to 40-70 years) the
    ideas start to look very sharp.  But we
    aren’t in the ‘80’s and the ideas for the most part aren’t very big, and some
    of them (I hate to say) are just goofy (and some of these come tagged along
    some very big names). A bit on the project is taken from Newsweek, below  

    I’ve also constructed a Wordle of the entire document to see if anything interesting popped out, though the secret of interest remained hidden.

    NEWSWEEK  Crystal-Ball Time  Newsweek, 31 december 2008 
    By Sharon Begley

    Every December the
    online intellectual salon called Edge, presided over by literary agent John
    Brockman, asks a select (virtual) assembly of scientists to ponder a question,
    such as what they are optimistic about (2007), what “dangerous” ideas
    they have (2006) and what they believe is true but cannot prove (2005). As the
    bell tolls on 2008 and rings in 2009, Edge is unveiling this year’s: “What game-changing scientific ideas and
    developments do you expect to live to see?”


    *KEVIN KELLY
    Editor-At-Large, Wired; Author, New Rules for the New Economy
    A NEW KIND OF MIND
    _____

    *HOWARD GARDNER
    Psychologist, Harvard Graduate School of Education; Author, Five Minds for
    the Future
    CRACKING OPEN THE LOCKBOX OF TALENT
    _____

    TIMOTHY TAYLOR
    Archaeologist, University of Bradford; Author, The Buried Soul
    CULTURE
    _____

    JOHN GOTTMAN
    Psychologist; Founder of Gottman Institute; Author (with Julie Gottman),
    And Baby Makes Three
    LABORATORY EARTH COLONIES
    _____

    ED REGIS
    Science Writer, Author, What Is Life?
    MOLECULAR MANUFACTURING
    _____

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  • Things that Are Just Simply Wrong: War Gases and Babies; Protective Suits for Children and Babies, 1943

    JF Ptak Science Books LLC  Post 466

    0 blog jan 12 baby gas380

    There’s nothing that shouts “WRONG” with greater voice than images like this.  Like pornography and art, things that are just plain wrong are instantly recognizable.  And this, my dear reader, is a fine example of that thinking. Anti-Gas Protective Helmet for Babies, Manual of Instructions was prepared for the Office of the Director of Civil Air Raid Precautions of Ottawa, Canada, and published in 1943.  I’m not sure that the image of the nurse in the gas mask isn’t as disturbing, but the two of them together is just too much.  

    I wasn’t aware of the gas attack preparations in Canada–the situation was entirely different in Britain, where everyone was required to own one, and by 1940 more than 38 million had been distributed to the population.  But the planning was underway in Ottawa in ’43 for the worst, as removed and distant from the war as just about any other place on earth–but the Air Raid Precautions people pulled no punches in their hearts and minds campaign, and I’m sure that it was very effective.  This little pamphlet certainly caught my attention.

    0 blog jan 12 baby gas381

    Blog gas poster

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  • Looking Deeply at Group Portraits from World War I

    JF Ptak Science Books LLC Post 467

    0 blog jan 12baker377

    This is another magnificent group portrait from my collection of News Service Photographs from World War I.  This is image is from mid-1918 and depicts nurses, wounded and recovering soldiers and an assortment of volunteers preparing relief packages for other wounded soldiers in filed hospitals.  My experience with these images is that are many levels of portraits within the larger group portrait–looking at them under magnification is an addictive process, and quite often there are some lovely surprises. 
    0 blog jan 12baker379

    0 blog jan 12baker378

  • Highpoint of Northern Renaissance History and Cartography: Olaus Magnus, 1565

    JF Ptak Science Books LLC  Post 467


    0 blog jan 08 magnus366
    Olaus Magnus
    (Swedish historian and geographer,
    born. at Skeninge, Sweden, 1490; and died at Rome., 1558) wrote the legendary
    and Renaissance-high-point  Historia
    delle genti et della natura delle cose setentrionale…
    (“Historia de
    gentibus septentrionalibus”, and translated as  “Olaus Magnus Gothus’, the Upsala Archbishops’, history of the nordic
    people’s different manners and camps, also about the wonderful
    differences in customs, holy practices, superstitions, bodily
    exercises, government and food keeping; further on war, buildings and
    wonderful aids; further on metals and different kinds of animals, that
    live in these neighbourhoods “) published in Rome,
    1555 (as well as Antwerp, 1558; Basle,
    1567; Frankfort, 1618, and also in translation
    in German (Strasburg and Basle,
    1567); Italian (Venice ,
    1565); English (London,
    1658); and Dutch, (Amsterdam, 1665)).  It was mostly a response to earlier histories
    treating the geography, fauna, flora and general history of Scandinavia, which
    Magnus found to be wanting, wrong and fanciful. (The image to the left,  a mixture of fact and fiction, does depict snowshoes for about the very first time in a printed book.) 
    His own book, the Historia, corrected and strangled many earlier wrongs and
    fanciful affronts committed by other authors.  It is still seen as a useful book on Scandinavian mythology and folklore, along with some interest in the origin of the material that Magnus contributed from his own imagination when sources went wanting.  

    Blog--magnus

    Magnus’ map of the great northland was a fantastic achievement, its
    stature undeterred by the liberal use of sea monsters and other
    fanciful creatures.  The detail in the coastlines (as well as the depiction of currents between Iceland and the Faroe Islands) as well as interior
    features make these among the most detailed maps of the north yet
    printed in the 16th century.

    Blog magnus map

  • Things that Are and Aren’t Dept: the Names of Colors


    JF Ptak Science Books                                          Part of the series Naming Things

    GoetheFarbkreis

    (Almost) in the beginning were monsters.  The epic battle that Moses wages early on is not with Pharaohs, but with the dragon(s?) that the creator itself had fought on the opening whisper of creation (Book of Job 26:12, Psalms 89:10) and who would again meet at the very last bits of the closing days.  Behemoth, Leviathan, Rehab may all well have been monsters to these ancient folks, but they very well might look like rhinoceros or crocs or hippos to us.  Monster demons like Rehab (Psalm 87:4), a slaughtering beast who would be reintroduced to a different part of the world as Tiamar who would or could also be known as the Red Sea,  lifted straight from Mesopotamian mythology and placed directly into that of the Old Testament among the rest of the borrowed stories and beliefs, a problem by any other name.

    Following names and their cyclonic twists, and absences and sudden  re-emergence through the history of storytelling is dizzying—just consult your Robert Graves on myths  if you want to have  your memory plumbed (the great poet and writer doing not such a poetical or writerly job in this effort in my opinion though most people love it).  Keeping an eye on the mix and mash of gods and goddess and associated super beings from thousands of years ago, the god of the Old Testament makes it very clear and precise about just who he is in his self-introduction to Moses:  “I am the God thy Father, the God of  Abraham, the God of Isaac, and the God of Jacob” (Exodus 3:6)

    Equally almost in the beginning, again so far as the Bible is concerned, are colors—before that maybe everything was black and white, or just white, or maybe just black, depending on your epistemological concept of everythingness or nothingness.  (It looks like green may be the first color mentioned in the bible, (Gen 1:30 And to every beast of the earth, and to every fowl of the air, and to every thing that creepeth upon the earth, wherein there is life, I have given every green herb for meat: and it was so) though the mixing up of meat and veggie is a little confusing to me.))

    Over the years color names themselves have creepethed among themselves like a vocabularic ocean, a fluid dynamic of naming.  Names have flowed across their individual spectra, some names sticking, some not; the originator of the concept of the naming of “red”, the original namer of the color, lost to the earliest and deepest part f the collective human memory.

    I don’t know where many of the names of colors come from, or why.  Index to Color Names and Color Numbers of the Standard and Season Color Cards of America (published and created by the Textile Color Card Association), and published in 1923, is filled with color names whose meaning and origin are a mystery and whose necessity seem to hinge on sunspots.  Which is fine, though it might be interesting to have had color names more dependent on that which went before. Like the names of the streets on most of Connecticut Avenue in D.C. are alphabetical, and once the first 26 letters or so are monosyllabicly employed, the second set starts with two syllables, and then three.  It is a system that usefully indicates where long the long avenue you might be. It might be useful to employ such a method in color names; or not. 

    And I suspect it would be “or not”, unless the poetry and art and music inherent in these formulations would be imaginatively employed

    But on to the color names:  Ambulance, Basketball, Bosom,  Cowboy,  Squirrel, Chit, Old, Nymph, Old mephisto, Pelt, Racket are examples of some of the mystery colors.                             

    Some names which were part of institutionalized racism I’m sure are now gone:  Arab, Negro, African; Bagdahd (?), Bombay Brown,  Coolie Yellow, Coolie, Congo Brown, Egyptian Husk, Hankow (yellow), Kyoto Yellow, Korea Yellow, Mandarin Yellow, Punjab Brown, Kafir, Tar Baby.

    Colororgan But I’ve got to say, even though the names may not have much to do with the colors, most of the names in the pamphlet sound quite lovely, and many are yummy: London Smoke, Log Cabin, Leadville, Madonna, Naked, Pitchpine, Pompeii, Prelate, Smoked Pearl, Swamp, Lucky Stone, to name a few. Overall I doubt that this is what Newton, Goethe, Chevreul, Rood, Maxwell and the rest had in mind when they were figuring out what color *is*, but I do think that all of them had large enough poetic natures (Newton the weakest and Goethe by far the strongest) to appreciate the occasional beauty of naming.  The unbelievable Shakespeare seems not to have spent that much time on color (so far as I know, and I don;’t much about the Bard), but (in a dear-sweet-god understatement) other people did:  people like Richard Feynman synesthesically thought in mathematical color terms, others created musical  instruments which would produce color from music while most of the rest of the world produced music which conveyed color, and on and on.  And then of course there’s the whole world of art.

    But I won’t go there now–I just wanted to follow this loose thread in what seemed to be a pretty inert pamphlet–in the end it opened itself to a lot of possibilities with just a little thinking. 

  • The Thin White Line: Concrete Ribbons as the Answer to the Air Raid Problems of London (1938)

    JF Ptak Science Books LLC   Post 469

    0 blog jan 07 evacuate london365The Illustrated London News for 16 July 1938 was screaming at its readers–14 months away from the British involvement in WWII–that the MOST EFFECTIVE form of ARP (air-raid protection) was via the evacuation of London.  And of course what the “article” meant was the orderly evacuation of London, as decentralized evac during a crisis (i.e. bombing) would be an “appalling” and chaotic mess.  

    The answer was elevated highways. 

    The reader was told that “the cost of such roads will necessarily be high”, but the high ticket price wouldn’t be quite as bad as tearing down buildings and widening streets through central London.  The tearing/widening idea is so original and so shockingly bad I don’t know what to say, if there was actually anything to say at all.  But then it is second only to the idea of building elevated roadways for evacuation purposes–road that look from the picture like they were four lanes wide.  These roads would have “the additional merit that under them the traditional appearance of London can be maintained unimpaired”.  Stress that part about the appearance “underneath”.  Not only that, the heartbeat of London evacuation=, these elevated roads, were evidently immune from bombs themselves; or at the very least nothing is mentioned about these roads being targets in themselves.  One bomb, one hit, one severed artery. (Looking back through the Bad Ideas Department I see Buckminster Fuller’s tragically goofy idea for building a mile-high dome over midtown Manhattan that was “radiation proof”…he didn’t say anything about it being impervious to actually being the direct target of a nuclear weapon, though.)

    Generally when ideas are this terrificly bad there is usually a reason for it, a reason that transcends logic and honest coherent thought.  And that reason in this case was money. 

    At a time when Nazi Germany was bursting at the seams for more people to fight and for  nations to devour, when there was a true and real fear of London being a target of German bombs, this simple and weak and strategically indefensible solution was proposed by one large and interested party.

    The “article” is signed by the Cement and Concrete Association of Grosvenor Gardens, London.  And thus all is clear.

  • Great and Unbuildable Department: Floating a Missing Manhattan (1975)

    JF Ptak Science Books LLC  Post 470

    “Heard melodies are sweet, but those unheard
    Are sweeter…” John Keats,
    “Ode on a Grecian Urn”

    0 blog jan 16 manhattan386 Agreeing with Mr. Keats or not, Robert Grosvenor had a delectable and memorable idea for a project in 1975:  testing the sea-worthiness of Manhattan island.  Grosvenor (b. 1937) was a well-known kinetic sculptor in Manhattan by the time of his detaching-Manhattan idea.  I found the summary of his project in Unbuilt America, by Alison Sky and Michelle Stone, of SITE, Inc. (seventh in a series called ON SITE), and published in 1976.  The book is a treasure trove of the unbuilt and the unbuildable, or the undoable, or the unnecessarily unattainable, though Grosvenor’s part in this book is clearly one of the very few who did not (really) take his/her project seriously.  I do though like the simplicity of the presentation of the project, right down to the “Step 2” of preparation, which was the umbilical snipping of the bedrock of Manhattan and the attachment of the “flotation collar”, which, I guess, would allow it to be moved around so long as flotation devices were attached. 

    I’m not sure, but I don’t think that Manhattan ever learned how to swim.  I’m also not so sure about where Manhattan would “go”,exactly; but what would it matter, since the people living in Manhattan were already where they wanted to be?

    0 blog jan 16 manhattan387

  • Portraits within Portraits: Found sub-Images in WWI Photography

    JF Ptak Science Books LLC

    0 blog jan 12baker374

    In my collection of WWI News Photo Service Agency photographs I would say that half or so of them show  scenes like this–semi-informal group portraits of military support groups.  500 portraits like this seem to be a lot, and I’m not sure why these images are so well represented. Except of course that there weren’t that many images (overall) of active-battle scenes. 

    These bakers, working at a front-line support station, from my read were probably taking a break, and the photographer took the opportunity to draw them together for the portrait.  I don’t know why they’re separated so, but they do look as though they have a real camaraderie–it is just a wonderful picture, full of friendship and loyalty, and I’m sure it has never been published before.  

    0 blog jan 12baker375

    0 blog jan 12baker376

  • Really Big Bangs: On Massive Explosions and Billion-Mile-Long Trains Filled with High Explosives

    JF Ptak Science Books LLC  Post 473

    The largest, greatest explosion of all time as time itself, being the Big Bang, as explosion of immeasurable, incomprehensible magnitude.  Among the sub-infinite explosions in deep space, the largest “observed” explosion  was 120 star mass supernova 240 million light years away through the veil of Perseus.

    Nuclear explosions are of course the largest man-made terrestrial explosions, the largest of these being the 50 megaton “Tsar Bomb” exploded over Noveya Zemlga by the Soviet Union—this is known as the Father of all Bombs.  (The Soviets were making these enormous bombs to make up in destructive capacity and real estate damage for what they lacked in missile control—they couldn’t match the accuracy of the American weapons, so they developed bombs big enough so that the accuracy factor fizzled away by sheer nuclear tonnage.)

    I guess though that the largest explosion is yet to come, not in the Rapture but in the Rupture:  the possibility that a meteor will at some time strike the earth.  A massive mass 30 kilometers across, say, hitting at the wrong place at a high speed could cause a Pacific-ocean sized disruption in the surface of the planet, the result being something like 150 trillion tons of explosive.  I’m not sure how to illustrate this sort of tonnage, except that it might be something on the order of filling up the Manhattan skyline with TNT and blowing it up.

    [ NOTE:  I just found the memory that produced that last statement.  In The Loom of God, Mathematical Tapestries at the Edge of Time, published by Plenum Trade in 1997), author Clifford Pickover thinks about craters and impacts of asteroids and such, calculating that an asteroid with a diameter of 20 km arriving at Earth at 40 km/sec would leave a crater size of 439 km (!) and have the equivalent power of 140 billion Hiroshima bombs, which would be about 20 of these bombs per person for everyone on the planet.  The hole would be about the width of New Mexico, and have the equivalent firepower, as Pickover points out, of a coal train filled with high explosives that was 1.4 billion miles long.]

    The more non-nuclear terrestrial explosions:

    In 2005 the Hertfordshire Oil Storage Terminal fire resulted in the explosion of 60,000,000 imperial gallons;

    In 1985, the Defense Military Agency introduced the   Minor Scale and Misty Picture explosions, which used 4744 and 4,685 short tons of ANFO, with a yield of about 4 kiltotons of TNT.

    Texas City, Texas just about exploded in 1947 when the SS Grandcamp, loaded with 8,500 short tons (7,700 t) of ammonium nitrate (the equivalent roughly of 2.7 kilotons of energy) exploded in port (killing  581 and injuring over  5,000).

    Also in 1947 was the Heligoland explosion, a 3.2 kilotons explosion of 4,000 long tons of WWII surplus ammo.

     A 2.9 kt TNT explosion resulted from the collision of the SS Imo and the SS Mont Blanc in the harbor of Hallifax; the Mont Blanc carried 2,653 tons of explosives, including picric acid, killing 2000.

    A miserable social tragedy took place in 1944 in Chicago (at the Port Chicago Naval Magazine) where questionable procedures of offloading munitions from a  naval ship resulted in an explosion equivalent to about 1.8 kt, killing 320 sailors and civilians, most of the sailors being African Americans performing a task that was probably all screwed up.  Just a month later a similar procedure was being undertaken, the Black sailors, this time refusing to participate and carry out what they saw as needlessly dangerous order, the result being the court martial of the 50 sailors (Port Chicago 50).

    Some Bits in the Chronology of the Detonations of Nuclear Weapons (of the 2000 or so that have been used or tested in the last 54 years):

    1945-07-16 Trinity, (USA) First fission device test, first plutonium implosion detonation

    1945-08-06 Little Boy 15 kt (USA) Bombing of Hiroshima, Japan, first detonation of an enriched uranium gun-type device

    1945-08-09 Fat Man 21 kt  (USA) Bombing of Nagasaki, Japan

    1949-08-29  RDS-1 22 kt (USSR) First fission weapon test by the USSR

    1952-10-03 Hurricane 25 kt (UK) First fission weapon test by the UK, Montebello Islands, Western Australia

    1952-11-01 Ivy Mike 10,400 kt (USA) First “staged” thermonuclear device test, not meant to be a deployable weapon

    1953-08-12 Joe 4 400 kt (USSR) First fusion weapon test by the USSR (not “staged”, but deployable)

    1954-03-01 Castle Bravo 15,000 kt(USA) First deployable “staged” thermonuclear weapon using dry fusion fuel; fallout accident

     1955-11-22 RDS-37 1,600 kt (USSR) First “staged” thermonuclear weapon test by the USSR (deployable)

     1957-11-08 Grapple X 1,800 kt (UK) First (successful) “staged” thermonuclear weapon test by the UK

     1960-02-13 Gerboise Bleue 70 kt  (France) first fission weapon test by France

     1961-10-31 Tsar Bomba 50,000 kt USSR Largest thermonuclear weapon ever tested.

     1964-10-16 596 22 kt (PR China) First fission weapon test by the People’s Republic of China

     1967-06-17 Test No. 6 3,300 kt  (PR China) First “staged” thermonuclear weapon test by the People’s Republic of China

     1968-08-24 Canopus 2,600 kt (France) First “staged” thermonuclear test by France

     1974-05-18 Smiling Buddha 12kt  (India) First fission nuclear explosive test by India

     1998-05-11 Shakti I 45 kt  (India) First potential fusion/boosted weapon test by India 

     1998-05-11 Shakti II 12 kt (India) First deployable fission weapon test by India

     1998-05-28 Chagai-I 9–12kt (Pakistan) First fission weapon test by Pakistan

     

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