Imperial diptych Imperial diptych In Late Antiquity, an imperial diptych is a theoretical type of ivory diptych, made up of two leaves of five panels each and each with a central panel representing the emperor or empress. They are so-named in contrast to consular diptychs. They were produced as unique examples, whereas each consular diptych was produced in large numbers to offer to the emperor on certain occasions, principally a nobleman's entry to the consulship. No complete example of an imperial diptych survives and so their existence is contested. The ivories specialist R. Delbrück has theorised that the 19 surviving fragments of
Altarpiece Reformation regarded the Word of God – that is, the gospel – as central to Christendom, and Protestant altarpieces often displayed the actual words from the bible, sometimes at the expense of pictures. With time, Protestant though gave birth to the so-called pulpit altar, or "Kanzelaltar" in German, in which the altarpiece and the pulpit are combined, thus making the altarpiece quite literally the abode of the Word of God. Canvas painting started to replace other types of altarpieces during the mid-16th century and onwards. The Middle Ages was the heyday of the production and use of altarpieces. While many