Suitable for ages 9 to 12 years, this title helps children discover the wonder of lighthouses and the geography that made lighthouses necessary, as well as the science that improved the strength of the light itself. It shows the kinds of lights including the spider lamp, reflected light, fresnel light, and lights of different brightness.
- Limba : Engleza
- Data Publicarii : 01 Apr 2007
- Format : Paperback
- Numar pagini : 96
- ISBN : 9780824967901