Science for beginners . Fig. 48.—Removing the dust fromthe indirect lighting bowl. 60 THE PRODUCTION AND USE OF LIGHT effects are avoided and shadows are few; the diffused lightcoming from all parts of the ceiling makes this an ideal sys-tem of artificial lighting (Fig. 49). 61. Semi-indirect Lighting.—A fairly good substitute forindirect lighting is the semi-indirect lightino. A semi-trans-parent bowl, shaped like the indirect bowl, is used. This bowlis smooth and polished on the inside, or upper side, so asto reflect some light to the ceiling. The glass used is opalglass or it is frosted on
Science for beginners . Fig. 48.—Removing the dust fromthe indirect lighting bowl. 60 THE PRODUCTION AND USE OF LIGHT effects are avoided and shadows are few; the diffused lightcoming from all parts of the ceiling makes this an ideal sys-tem of artificial lighting (Fig. 49). 61. Semi-indirect Lighting.—A fairly good substitute forindirect lighting is the semi-indirect lightino. A semi-trans-parent bowl, shaped like the indirect bowl, is used. This bowlis smooth and polished on the inside, or upper side, so asto reflect some light to the ceiling. The glass used is opalglass or it is frosted on the lower side so as to diffuse alllight which passes through
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectscience, bookyear1921
