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These pictures explore how using objective disciplines such as geometry, arithmetic, number series and colour theory can create abstract images with optical illusion effect.

Calvendo calendars are premium products - a bit more pricey than others but with added benefits: Our calendars always look beautiful on your wall because we produce them locally with premium paper and sophisticated spiral binding, ensuring easy turning of pages and flat hanging against the wall. A protective transparent plastic cover sheet provides added stability and each calendar comes in five languages. Treat yourself to a Calvendo calendar and you get something that looks better all year round.

This successful calendar was re-released this year with the same pictures and updated calendar.
Dieser erfolgreiche Kalender wurde dieses Jahr mit gleichen Bildern und aktualisiertem Kalendarium wiederveröffentlicht.