This section is from the "Studio Light Incorporating The Aristo Eagle - The Artura Bulletin 1912" book, by Aristo Motto. Also see Amazon: Studio Light Incorporating The Aristo Eagle - The Artura Bulletin 1912.
English and German Investigators ABLE TO MATCH SHADES by process. Filtered through glass. Expected to be fine for art galleries and other large buildings.
Special Cable Despatch to the "Sun."
London, Aug. 20. - How to produce artificial daylight seems to have been discovered almost simultaneously in England and Germany, and the results promise that artists will soon be able to paint by "daylight lamps," and that art classes may be held in the night time. Housewives will not have to wait for a bright day in order to match dress materials.
Dr. C. E. Kenneth Mees, who has been working on the new idea in England, in a lecture to-day described to the Illuminating and Engineering Society of London successful experiments with the new invention. "Daylight lamps" were originally intended for measuring the sensitiveness of photograph plates. He stated that he first constructed a filter by means of dyes adjusted to follow a spectrophotometer curve which, after an initial failure, was satisfactory for his own work, but was not a permanent affair and hence he devised another with permanent dyes.
The difficulty was to find a satisfactory blue. He recently discovered this and got a permanent as well as an almost perfect resemblance to daylight. However, light power loses by absorption 85 per cent. Therefore, so far it was only suitable in small rooms, but was most useful in the correct matching of delicate shades.
Simultaneously Dr. Voege of Hamburg contributes to the Illuminating and Engineering Society's organ an elaborate description of his method of studying color by artificial illu-minants, showing the effects of gas, electric and the existing daylight lamps on colors as compared with daylight itself. The doctor shows that most of the present illuminants have an excess of red and a deficiency of blue.
In the German "daylight lamps" an enclosed arc is screened with suitable absorption glasses and the resultant light approaches daylight closely in blue and green, but there is a deficiency in red, which it is thought can be remedied by a combination with carbon filament lamps.
Art galleries and other large buildings may be expected to be more like daylight at night, by an improved type of inverted arc lamp if the flickering can be overcome.
The truth of the above dispatch to The New York Sun and the; fact that Dr. Mees, who is a member of the scientific staff'of the Eastman Kodak Company, has returned to the United States and taken up his permanent residence in Rochester, will be of particular interest to the photographic profession.
A laboratory is now being erected at Kodak Park which will be used by Dr. Mees and his staff in continuing his scientific research work as well as reducing to a practical commercial manufacturing basis many of his recent discoveries.
While the method of artificially producing daylight was the culmination of a series of experiments by Dr. Mees made with the idea of obtaining an artificial light for measuring the sensitiveness of photographic dry plates, its commercial value is readily apparent. The niters will be manufactured at Kodak Park.
From An Artura Iris Print By Helmar Lerski Milwaukee, Wis.