In 1964, a zoologist at UCL shone a mercury lamp through a glass slide and measured — for the first time, in living cells — the gap between a cell membrane and a substrate.
No fluorescent labels. Just interference fringes.
👉 jfattaccioli.substack.com/p/2-1964-one...
jfattaccioli.substack.com
#2 — 1964: One gap, one fringe
How a zoology paper invented a technique it didn't know it was inventing