In this photograph, featuring the fifth age of the T3 series “The Seven (or Eight) Ages of Man”, you can just make out a couple of figures:
(Image: © Copyright Keith Edkins and licensed for reuse under Creative Commons Attribution-ShareAlike 2.0 License.)
But fortunately we know what the imagery should represent. Here’s Shakespeare again:
Then a soldier, Full of strange oaths, and bearded like the pard, Jealous in honour, sudden, and quick in quarrel, Seeking the bubble reputation Even in the cannon's mouth.
The phrase “bearded like the pard” means, according to genius.com:
“Pard” was the Old English word for a leopard. The beard of a young man is so patchy that it looks spotted like a leopard.
The strange oaths are shown around the edges as “*!#@?”, as in a comic.
We can decode the symbols using our key:
c l e s o f l i g
o i s o n t q d l
which we’ll flip horizontally:
l e p t o n s i n
y c h p k c p a e
which needs to be flipped both ways:
d a n c i n g c y
Combining all three:
leptons in dancing cycles of lig[ht]
A lepton is, as every schoolchild knows:
an elementary, half-integer spin (spin 1⁄2) particle that does not undergo strong interactions, but is subject to the Pauli exclusion principle. The best known of all leptons is the electron, which is directly tied to all chemical properties. Two main classes of leptons exist: charged leptons (also known as the electron-like leptons), and neutral leptons (better known as neutrinos).
The little triangle contains “Ne”. The other triangles we’ve seen contain “A”, “N2”, “O2”, “CO2”, “i”, and “r”. Ne is presumably Neon. Surprisingly, Neon is the fifth most abundant element in the universe (after Hydrogen, Helium, Oxygen, and Carbon), but it’s much rarer on the Earth (about 0.001% of the atmosphere). And that’s partly because, being lighter than air, it all floats away!