Sandstone varieties

• Book ID: 104120290
• Publisher: Elsevier Science
• Year: 1915
• Tongue: English
• Weight: 69 KB
• Volume: 180
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/s0016-0032(15)90105-9

✦ Synopsis

51o CURRENT TOPICS. lJ. F. ~.

cast by one strand on the next, and on the varying brightness over the curved surfaces of each individual strand. Both these factors depend on the unidirectional character of the light incident on the material and the inefficiency of thoroughly-diffused (that is, indirect) light, for such work is most marked. The writer has for ten years used indirect lighting for domestic use, and for a long time ridiculed the assertion that was often made that it was a most unsatisfactory light by which to do needlework, particularly darning. After experiment, however, it is clear that the contention is sound, and that there is nothing so good as unidirectional light giving harsh shadows for the discrimination of detail in needlework of all kinds. Indirect lighting, with its soft shadows, is an ideal light for domestic use except in respect to this one particular.