Measurement of elastic strains in concrete structures

• Publisher: Elsevier Science
• Year: 1928
• Tongue: English
• Weight: 148 KB
• Volume: 206
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/s0016-0032(28)91672-5

✦ Synopsis

September 14 and September 29 , I928, the autumnal equinox period. At certain times on four different days the natural and artificial daylight were in practically perfect color match. At other times the natural daylight was slightly yellowish, purplish, or bluish, relative to the standard.

Standard artificial daylight is thus available, accurately reproducible from specification, and may be readily prepared in any laboratory. The specifications of this filter are sifiailar to those of other Davis-Gibson filters. The exact proportions of the ingredients are as follows:

A.