Blacklight (Wall Calendar 2024 DIN A4 landscape), CALVEND...
Bryson, David This calendar shows a range of photographs taken of everyday and not so everyday objects and shows their reaction to Blacklight bulbs, another name for ultraviolet light, UV-A. The glass used by blacklight bulbs was invented by Robert Williams Wood in 1903 and the terms Wood's light or blacklight. Blacklight as the bulbs only produce UV light with very limited visible light so light can't be seen only its effects.
High-quality wall calendar...