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#mesopotamia — Public Fediverse posts

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  1. Gaur ikasi dut babiloniar ordua zer den. Babiloniarrek eguna 24 ordu berdinetan banatzen zuten, baina egunaren hasiera eguzkiarekin bat izaten zen. Eguzkia agertzen zenean 00:00 ordua zen eta orduan hasten zen eguneko lehen ordua. Gaur egungo neurketa batzuetan erabiltzen da oraindik. alcazaren.com/node/748 es.wikipedia.org/wiki/Sistema_ #denbora #eguzkierlojua #Mesopotamia #Babilonia #clock #solarclock #relojsolar #solar #time #tiempo #hora

  2. Gaur ikasi dut babiloniar ordua zer den. Babiloniarrek eguna 24 ordu berdinetan banatzen zuten, baina egunaren hasiera eguzkiarekin bat izaten zen. Eguzkia agertzen zenean 00:00 ordua zen eta orduan hasten zen eguneko lehen ordua. Gaur egungo neurketa batzuetan erabiltzen da oraindik. alcazaren.com/node/748 es.wikipedia.org/wiki/Sistema_ #denbora #eguzkierlojua #Mesopotamia #Babilonia #clock #solarclock #relojsolar #solar #time #tiempo #hora

  3. Copa y cuenco de la tumba real de Ur (c. 2600 a.C.) fabricados con huevos de avestruz decorados con nácar, conchas y piedras en betún. 🏛️Museo Británico #mesopotamia

  4. Copa y cuenco de la tumba real de Ur (c. 2600 a.C.) fabricados con huevos de avestruz decorados con nácar, conchas y piedras en betún. 🏛️Museo Británico #mesopotamia

  5. A 6,000-year-old infant’s broken ribs may be the oldest known case of child abuse in the Middle East. Found at Tell Brak, one of the world’s first cities, the case raises hard questions about urbanization and family stress. #Archaeology #Bioarchaeology #Mesopotamia anthropology.net/p/a-dead-infa

  6. A 6,000-year-old infant’s broken ribs may be the oldest known case of child abuse in the Middle East. Found at Tell Brak, one of the world’s first cities, the case raises hard questions about urbanization and family stress. #Archaeology #Bioarchaeology #Mesopotamia anthropology.net/p/a-dead-infa

  7. Revisiting √2 as written on Babylonian clay tablet YBC 7289.
    (The first half of the Second Millennium: between 1800 and 1600 BC).

    I took the sexagesimal digits from the Wikipedia page (see below) and checked that _all_ of them are correct, in other words, that the value is accurate to the full extent of its precision.
    The program I wrote for this is below.

    (Note that there is nothing else on this side of the tablet (besides a sketch of a square with its diagonal), while usually Mesopotamian clay tablets are completely filled with text, with no or very narrow margins.)

    [Edited, adding comments.]

    Reference:
    <en.wikipedia.org/wiki/YBC_7289>

    Program (Common Lisp):

    (defconstant sqrt-2-ybc-7289 '(1 24 51 10)
    "Sexagesimal digits of √2 in tablet YBC 7289.")

    (defun rational-to-sexagesimal (x)
    "Return a list with the sexagesimal digits of X's fractional part in the cdr.
    The prime factors of X’s denominator must be a subset of those of 60,
    which is good enough for the purpose."
    ;; Naive, but easy to review.
    (if (zerop x) '(0)
    (multiple-value-bind (w f) (floor x)
    (cons w (rational-to-sexagesimal (* f 60))))))

    ;; Assert that all digits on the tablet are correct:
    (assert (= (length sqrt-2-ybc-7289)
    (mismatch sqrt-2-ybc-7289 (rational-to-sexagesimal (rational (sqrt 2.0d0))))))

    ;;; Additional.

    (defun sexagesimal-to-rational (ds)
    "Return the rational value of a sexagesimal fraction.
    DS is the list of its digits, the first element being the whole part."
    (loop for d in ds
    for w from 0
    sum (/ d (expt 60 w))))

    ;; The approximate absolute error (decimal), about 5.99e-7:
    (format t "~E" (abs (- (sexagesimal-to-rational sqrt-2-ybc-7289) (rational (sqrt 2.0d0)))))

    ;; A unit test:
    (let ((x 123456/3600))
    (assert (eql x (sexagesimal-to-rational (rational-to-sexagesimal x)))))

    #CommonLisp
    #MathematicsInAncientMesopotamia
    #Mesopotamia

  8. Revisiting √2 as written on Babylonian clay tablet YBC 7289.
    (The first half of the Second Millennium: between 1800 and 1600 BC).

    I took the sexagesimal digits from the Wikipedia page (see below) and checked that _all_ of them are correct, in other words, that the value is accurate to the full extent of its precision.
    The program I wrote for this is below.

    (Note that there is nothing else on this side of the tablet (besides a sketch of a square with its diagonal), while usually Mesopotamian clay tablets are completely filled with text, with no or very narrow margins.)

    [Edited, adding comments.]

    Reference:
    <en.wikipedia.org/wiki/YBC_7289>

    Program (Common Lisp):

    (defconstant sqrt-2-ybc-7289 '(1 24 51 10)
    "Sexagesimal digits of √2 in tablet YBC 7289.")

    (defun rational-to-sexagesimal (x)
    "Return a list with the sexagesimal digits of X's fractional part in the cdr.
    The prime factors of X’s denominator must be a subset of those of 60,
    which is good enough for the purpose."
    ;; Naive, but easy to review.
    (if (zerop x) '(0)
    (multiple-value-bind (w f) (floor x)
    (cons w (rational-to-sexagesimal (* f 60))))))

    ;; Assert that all digits on the tablet are correct:
    (assert (= (length sqrt-2-ybc-7289)
    (mismatch sqrt-2-ybc-7289 (rational-to-sexagesimal (rational (sqrt 2.0d0))))))

    ;;; Additional.

    (defun sexagesimal-to-rational (ds)
    "Return the rational value of a sexagesimal fraction.
    DS is the list of its digits, the first element being the whole part."
    (loop for d in ds
    for w from 0
    sum (/ d (expt 60 w))))

    ;; The approximate absolute error (decimal), about 5.99e-7:
    (format t "~E" (abs (- (sexagesimal-to-rational sqrt-2-ybc-7289) (rational (sqrt 2.0d0)))))

    ;; A unit test:
    (let ((x 123456/3600))
    (assert (eql x (sexagesimal-to-rational (rational-to-sexagesimal x)))))

    #CommonLisp
    #MathematicsInAncientMesopotamia
    #Mesopotamia

  9. A conceptual atlas-style map of a proposed future Kurdistan, redrawing borders from historical Kurdish-majority regions across Turkey, Syria, Iraq and Iran. Not an official claim, but a visual way to discuss history, identity, self-determination and disputed borders.

    #Kurdistan #Kurds #Kurdish #MiddleEast #History #Geography #Maps #Cartography #Geopolitics #Turkey #Syria #Iraq #Iran #Armenia #Azerbaijan #Anatolia #Mesopotamia #Zagros #Diaspora #Minorities #SelfDetermination #Borders

  10. A conceptual atlas-style map of a proposed future Kurdistan, redrawing borders from historical Kurdish-majority regions across Turkey, Syria, Iraq and Iran. Not an official claim, but a visual way to discuss history, identity, self-determination and disputed borders.

    #Kurdistan #Kurds #Kurdish #MiddleEast #History #Geography #Maps #Cartography #Geopolitics #Turkey #Syria #Iraq #Iran #Armenia #Azerbaijan #Anatolia #Mesopotamia #Zagros #Diaspora #Minorities #SelfDetermination #Borders

  11. Introducing the Royal Game of Ur - a timeless classic that traces its roots back to 2600–2400 BCE in the Royal Tombs of Ur, Mesopotamia. Transport yourself to the ancient world with this meticulously crafted reproduction brought to you by Ancient Origins, now featuring a unique wooden box. shop.ancient-origins.net/colle
    #AncientGames #HistoryRevived #RoyalGame #BoardGames #Mesopotamia #AncientHistory

  12. Introducing the Royal Game of Ur - a timeless classic that traces its roots back to 2600–2400 BCE in the Royal Tombs of Ur, Mesopotamia. Transport yourself to the ancient world with this meticulously crafted reproduction brought to you by Ancient Origins, now featuring a unique wooden box. shop.ancient-origins.net/colle
    #AncientGames #HistoryRevived #RoyalGame #BoardGames #Mesopotamia #AncientHistory