When we talk of lighting the modern home, there is generally but one idea that enters our minds - electric lighting. Even those dwellings remote from any power-house are installing small generators in preference to the oil or gas lighting systems.
Then, too, when we refer to good lighting we no longer think of glaring bulbs of light, exposing all the harsh glow of the white, hot filaments, causing one's eyes to squint and strain to find things in the corners of the room; but we picture a room flooded with mellow illumination emitted from fixtures which shield the direct rays of light from our vision.
Another change that has come about in our conception of good illumination is the quantity and intensity of the light we expect from the incandescent bulb. It was only a few years ago that we marvelled at the yellow light given off by the 16-candle-power carbon-filament bulb. But to-day if a bulb gave off as feeble an attempt at lighting as did these old ones we would think it on its way to the graveyard of lightning-bugs. We cannot talk of 16-candle-power lamps when the glow of a modern Mazda light is around. We used to specify on the plans so many 16-candle-power lights for the dining-room or living-room fixtures, and it is hard to change our habits to refer to the modern 40 or 50 watt lamps which have taken their place in the home.
The modern 50-watt bulb.
Thus within a period of not more than ten years our whole conception of illumination has been jolted out of a rut.