Brechner, Claude H., 1887- [from old catalog] · Boston, New York [etc.] Allyn and Bacon · leaf 55
g enough to get the food and heatingslabs hot. 44 HEAT TRANSFERENCE The non-conducting material used may be wool, felt,mineral wool, asbestos, leather, paper, straw, shavings, orsawdust. 52. The Refrigerator. — The refrigerator (Figure 28)uses non-conducting substances for its walls. On the… … Mineral Wool or Felt Rough WoodPaper or AsbestosFinished Wood Figure 28.—The Cross Section of a Refrigerator Wall. enamel, or zinc. The ice is put into the top of the refrigera-tor, and the things to be kept cool on the shelves below orbeside it. The insulating walls allow little heat to comein…
Physics
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![An illustration from M. Vitrvvii viri svae professionis pertissimi De architectvra libri decem, ad Avgvstum Cæsarem accuratiss. conscripsit & nvnc primvm in Germania qva potuit diligentia excusi, atq[ue] hinc inde schematibus non iniucundis exornati (1543)](https://img.insideoutlibrary.com/img/200/ia-mvitrvviivirisva00vitr-108-32.webp)
