flatiron

UK
/ˈflæt.aɪ.ən/
US
/ˈflætˌaɪ.ɚn/

Library

The upper side of a flatiron has a circular or oval depression (A) cast therein, and a spool of slate (B) is made so it will fit into the depression and the high resistance wire (C) is wound around this spool, and insulating material, such as asbestos, must be used to pack around it.
household
fer à repasser
«Flatiron» est un mot ancien ou moins courant pour désigner un fer à repasser.
Electricity for Boys
"Electricity for Boys" by James Slough Zerbe is a practical guide written in the early 20th century. This work falls within the category of educational publications aimed at teaching young boys the fundamental concepts and applications of electricity through hands-on experiments. It emphasizes the importance of practical experience and experimentation over theoretical knowledge alone. The beginning of the text introduces the fascinating world of electricity, stressing the value of learning through practical application while experimenting with various tools and techniques. Zerbe explains that electricity can be understood better when boys engage directly with the material rather than through rote memorization of its principles. He lays out the book's fundamental approach to education, which involves experimenting, building, and discovering the principles that govern electrical phenomena. This foundational philosophy sets the stage for the more detailed chapters on specific electrical concepts and devices, reflecting a broader goal of fostering critical thinking and hands-on learning among young readers.
Electricity for Boys