Talk:Purcell effect

original paper citation?
the citation Phys. Rev. 69, 681 (1946) is incorrect: no such article exists. does anyone have a correct citation ?

What is n?
Number density of particles? If so, why is λ_c/n a wavelength? 89.217.11.36 (talk) 09:09, 22 February 2015 (UTC)

n is the refractive index. --88.217.170.249 (talk) 16:23, 9 February 2017 (UTC)

What is υ?
It's frequency ($$\nu$$, not $$\upsilon$$). Evgeny (talk) 16:03, 14 September 2022 (UTC)