On the smokeless fire-place : chimney-valves, and other means, old and new, of obtaining healthful warmth and ventilation (1855)
Arnott, Neil, 1788-1874 · London : Longman, Brown, Green, and Longmans · leaf 44
evel field. The rays from the fire arenearly all shooting upwards from the surface, and thefew which approach it slant very obliquely along, ornearly parallel to, the surface, scarcely touching, andtherefore not sensibly warming it. The use, latelybecome common, of radiating surfaces of… … Fig. 2. c represents a fire-place or centre of radiation, withrays diverging from it into all free space around.a c the wall in which the grate is set, and which 30 THE SMOKE-CONSUMllSrG evidently can receive none of the direct rays,—as isnearly true also of the floor, c d, if the fire be on…
Heating · Ventilation · Fireplaces
Internet Archive · Medical Heritage Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-340-231.webp)
