Effect of use upon the quality of iron
โ
C.
๐
Article
๐
1880
๐
Elsevier Science
๐
English
โ 52 KB
~ect of Use on 5"o~. 417 top one will slide off by its own weight at the least inclination of the lower one. โข ~ยข[uch of this interposed fihn of air can be displaced by a sliding of one plate on the other, starting, say at one corner, with the plates in close contact, and carefhlly pushing one over