Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 331
Fig. 7. ipen circuit type, such as the Leclanche cell, which is used verylargely except for heavy w^ork. This is a zinc-carbon cell in whichthe excitant is sal-ammoniac dissolved in water. Polarization isprevented by peroxide of manganese, which gives up part of itsoxygen, combining with the…
Architecture · Building · Carpentry
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