Fourth Dimension greeting card

'Views of the Tesseract', adapted from 'The Fourth Dimension' by Charles Howard Hinton (1906). Hinton's book attempts to explain the existence of a fourth dimension in space, a concept popular among mystics and artists until Einstein's theory of space-time became mainstream two decades later. Courtesy Boston College Libraries. 170mm x 120mm (6 3/4" x 4 3/4"). Blank inside. Printed with vegetable-based inks on a carbon-neutral press using 100% recycled carbon-neutral paper. Individually wrapped in a compostable bag with a 120gsm recycled kraft envelope.