TO FILL A SMALL ROOM WITH LIGHT as bright as midsummer sunlight takes about 30 kilowatts of power, and it is difficult to avoid roasting everything in the room. Problems like this have to be solved in designing a controlled-climate laboratory. In the prototype climate units at the Plant Physiology Division, this one has been met by passing the light through a layer of running water and providing an efficient air cooling system. This picture was taken from above one of the controlled-climate rooms. Seen through the water layer are Dr. K. J. Mitchell (left), director of the division, and Dr. R. G. Thomas inspecting some of the plants under trial. Above them is the battery of lamps used to create the artificial sunlight.

Press, Volume CII, Issue 30230, 7 September 1963, Page 12

TO FILL A SMALL ROOM WITH LIGHT as bright as midsummer sunlight takes about 30 kilowatts of power, and it is difficult to avoid roasting everything in the room. Problems like this have to be solved in designing a controlled-climate laboratory. In the prototype climate units at the Plant Physiology Division, this one has been met by passing the light through a layer of running water and providing an efficient air cooling system. This picture was taken from above one of the controlled-climate rooms. Seen through the water layer are Dr. K. J. Mitchell (left), director of the division, and Dr. R. G. Thomas inspecting some of the plants under trial. Above them is the battery of lamps used to create the artificial sunlight.