BTW, a factoid just occurred to me that some may not know, which is that the earth's ionosphere—those ionized layers ≈100-200km above ground that reflect radio waves—is called the Heaviside layer: https://en.wikipedia.org/wiki/Kennelly%E2%80%93Heaviside_lay....
...And now some trivia straight from the almost-completely-useless information dept: somewhat strangely, the Heaviside Layer features in the musical Cats. It's at the point where Macavity the Mystery Cat tries to escape to the Heaviside Layer: https://blog.sciencemuseum.org.uk/cats-and-the-heaviside-lay... https://www.themarysue.com/cats-heaviside-layer-real/
"Up, up, up past the Russell Hotel
Up, up, up, up to the Heaviside layer
Up, up, up past the Russell Hotel
Up, up, up, up to the Heaviside layer"
https://www.youtube.com/watch?v=pKH63cRJ3p4
Methinks, Heaviside would not have approved (but then, that's rather presumptuous of me).
Whilst CliffStoll's quote (and link) is from Paul J. Nahin's article in the Royal Society journal it's also worth highlighting the fact that Nahin has written a full bio on Heaviside (it's mentioned in the article's footnotes but might be overlooked). I have a copy of the book, it is excellent, it's likely the most comprehensive and authoritative written on Heaviside, and I'd thoroughly recommend it: Oliver Heaviside–The Life, Work, & Times of an Electrical Genius of the Victorian Age; Paul J. Nahin PJ ©1988-IEEE ©2002-John Hopkins Uni, ISBN 0-8018-6909-9 paperback ed.
It's all very well to praise Heaviside but if one really wants to get a feel for the extent and depth of his work then I refer one to the following works of his that are on the Internet Archive (they're out of copyright so they can be downloaded). Note, as with many works, the Internet Archive has multiple copies some of which are more readable (or better scanned) than others, so the seemingly multiple entries are not duplicates. Two other points to note, this list is not comprehensive and the IA's file-naming conventions are sometimes skewed or confusing (apologies if I've made any typos):
Electromagnetic Theory, Volume-1, Heaviside, Oliver, 1850-1925, 1893 edition: https://archive.org/details/electromagnetic00heavgoog
Electromagnetic Theory, Volume-1, Heaviside, Oliver, 1850-1925, 1894/1912 ed.: https://archive.org/details/electromagnetict01heavrich
Electromagnetic Theory, Volume-2, Heaviside, Oliver, 1850-1925, 1894/1912 ed.: https://archive.org/details/electromagnetict02heavrich
Electromagnetic Theory, Volume-3, Heaviside, Oliver, 1850-1925, 1893 ed.: https://archive.org/details/electromagnetict03heavuoft
Electrical Papers, Volume-1, Heaviside, Oliver, 1850-1925, 1892 ed.: https://archive.org/details/electricalpapers01heavuoft
Electrical Papers, Volume-2, Heaviside, Oliver, 1850-1925, 1894 ed.: https://archive.org/details/electricalpaper01heavgoog
Electrical Papers, Volume-2, Heaviside, Oliver, 1850-1925, 1894 ed.: https://archive.org/details/electricalpapers02heavrich
Electromagnetic Waves, Heaviside, Oliver, 1850-1925, 1889 ed.: https://archive.org/details/electromagnetic01heavgoog