Leeds & Northrup apparatus at the Louisiana Purchase Exposition 1904 (1904)
Leeds and Northrup Company · Leeds and Northrup Company · leaf 32
cross bars and may be connected inseries or parallel or in combinations of the two. Allot the blocks areinsulated on independent pieces of hard rubber and the c seg- ments are thoroughly insulated inside of the 1 THE LEEDS & NORTH R UP COMPANY 31 Self-induction Apparatus Our line of… … 5316 5316. Ayrton & Perrys Variable Standard of Self-induc-tion $125 00 As shown in the illustration this instrument consists of two coilswound on sections of concentric spherical surfaces, the inside one ofwinch can be rotated with reference to the outside one, and thus theirco-efficient of…
Electricity · Electrical Equipment · Electric Circuits · Electronics
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