• Längenmaße

    Units of Length

    Measuring and Calculating

    The DVD starts with a look back into the past. How did peop- le measure in former times? What historical units of measure- ment were there? What is the standard metre? Since when has there been a system of units?

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  • Alles ist Zahl

    All Is Number

    Sometimes Irrational

    “All is number“, this saying already applied in the 5th century B.C. when the brotherhood of the “Pythagoreans“ was founded. Natural, rational and irrational numbers have been an important concept since the creation of the Bible, throughout antiquity up to our modern times.

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