diff --git a/photon.md b/photon.md
index ca9a12125..5935f2596 100644
--- a/photon.md
+++ b/photon.md
@@ -3,4 +3,6 @@
   - "…two photons, as seen by a single observer, differ in direction of motion, in energy and in polarisation".
   - "If we were moving with rapid acceleration toward a wireless station, its photons would appear to possess increasing amounts of energy, and would pass over the whole spectral scale through the visible and into the ultraviolet"
   - "Even so fundamental a process as the flow of heat must involve two factors, the amount of energy and the number of photons transferred"
-- > The name photon derives from the Greek word for light, [[φῶς]] (transliterated phôs).
+- From Wikipedia:
+  - > The name photon derives from the Greek word for light, [[φῶς]] (transliterated phôs).
+  - > Although Wolfers's and Lewis's theories were contradicted by many experiments and never accepted, the new name was adopted by most physicists very soon after Compton used it.