What a pity!
IN Eyring, Walter, and Kimball's classic 1944 edition of "Quantum Chemistry", the authors, on pg. 23, call "E=hv" as the "Einstein Principle". Old Planck may weep in his grave when he hears this!!
If at first you don't succeed, put it all back they way it was and keep lumbering along
7 hours ago in The Phytophactor