Early recording heads were fabricated by wrapping wire around a laminated iron core analogous to the horseshoe-shaped electromagnets found in elementary school physics classes.
(Early recording heads; were fabricated; ) (Early recording heads; by wrapping; wire; around a laminated iron core analogous to the horseshoe-shaped electromagnets) (the horseshoe-shaped electromagnets; found; L:in elementary school physics classes)
Early recording heads Early recording heads the horseshoe-shaped electromagnets
were fabricated by wrapping found
wire around a laminated iron core analogous to the horseshoe-shaped electromagnets
L:in elementary school physics classes