100 Years Ago

摘要

The National Gas Exhibition at Shepherds Bush, which will be open during the whole of October, affords the best object lesson in gas lighting that the public has ever had the opportunity of studying… In domestic heating the grasping of the conditions necessary to make gas a hygienic domestic fuel has been the great factor that has led to progress. In the early days of the gas fire, only 25 to 33 per cent, of the heat was given out as radiant heat, and convection was relied upon largely to give the heating effect, this giving hot air to breathe, and at the same time leaving the objects in the room often so far below the body temperature as to lead to chill… Another very suggestive exhibit is a series of compartments illustrating the effect of the colour and surface of wall-papers on the amount of illumination obtained from equal sources of light.