Mesopotamian tablet YBC 7289

A tablet thought to be from southern Mesopotamia, 1800 - 1600 BC. The obverse shows calculation of a square's diagonal, by multiplying the side length by the square root of 2. The reverse is not so easily legible, but seems to treat two separate problems.This tablet is in the Yale Babylonian Collection, catalogue number YBC 7289.Illustration and animations rendered in Blender by Alistair M. Kwan (University of Auckland) from a scan by Chelsea Alene Graham (Yale University Institute for the Preservation of Cultural Heritage Digitization Lab) using an Artec Spider scanner.The animations show the tablet being rotated under static illumination, and the tablet while a light source revolves around a point in front of it.

此为据信源自美索不达米亚南部，公元前1800至1600年的石板。其正面展示了通过将边长乘以根号2来计算正方形对角线的方法。背面虽不易辨认，但似乎涉及两个独立的问题。此石板收藏于耶鲁巴比伦藏品馆，编号为YBC 7289。Alistair M. Kwan（奥克兰大学）利用Artec Spider扫描仪由切尔西·艾伦·格雷厄姆（耶鲁大学文化遗产保护研究所数字实验室）提供的扫描件，在Blender软件中制作了插图和动画。动画展示了石板在静态照明下的旋转，以及光源在石板前方某一点旋转时的情形。