# Oliver Heaviside (1850 - 1925, England)

Oliver Heaviside was an important pioneer in the study of electronics.

Some highlights of Heaviside's constributions:

- Heaviside caught scarlet fever when he was a young child and this affected his hearing.
- At age 16 he left school. He taught himself Morse code and electricity. He was helped by his uncle Charles Wheatstone (after whom the Wheatstone bridge* was named).
- Heaviside introduced
**operational calculus**to enable him to solve the ordinary DEs which came out of the theory of electrical circuits. He replaced the differential operator `d/dx` - Had the idea for an
**induction coil**to increase induction, but it was patented in 1904 in the United States by AT&T. - His nails were always exquisitely manicured, and painted a glistening cherry pink...(!)

*He developed the **Wheatstone bridge**, used for determining an unknown resistance:

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