Electromagnetic control of liquid crystals is from 1927 (and original research on the chemistry/material side being from 1888) .. things did take a long time to

Electromagnetic control of liquid crystals is from 1927 (and original research on the chemistry/material side being from 1888) .. things did take a long time to evolve. https://en.wikipedia.org/wiki/Fr%C3%A9edericksz_transition https://en.wikipedia.org/wiki/Fr%C3%A9edericksz_transition