Better Fruit With Artificial Sun
In 1946, Mr G. N. Edwick built three large glasshouses in Hertfordshire, England, and, fitted' them with a fluorescent lighting system. ' The object was to grow tomatoes without the aid of sunshine and to for 7 get about difficult climatic conditions. ' The lights threw various rays—yellow, red, white and warm white. By deleting the injurious rays from the spectrum, scientists on the job found they could promote and improve the growth of fruit and vegetables. ’ ’ ! i _ They were also able ,to put their products on the market completely out of season. In 1946, they used forty lights in each glasshouse having 12 candlepower a foot, but they found that to* do the job properly 200 candlepower a foot was necessairy.
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https://paperspast.natlib.govt.nz/newspapers/BPB19480908.2.17
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Bay of Plenty Beacon, Volume 12, Issue 92, 8 September 1948, Page 4
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125Better Fruit With Artificial Sun Bay of Plenty Beacon, Volume 12, Issue 92, 8 September 1948, Page 4
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