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Blacklight 2019 : Monthly calendar, 14 pages, Calendar Book

Blacklight 2019 : Monthly calendar, 14 pages Calendar

Part of the Calvendo Science series

Calendar

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Description

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. 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.

Treat yourself to a Calvendo calendar and you get something that looks better all year round.

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£16.99

£14.85

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