亨
=
亠
+
口
+
了
:
Mnemonic symbol: American scientist Joseph Henry.
Before Henry (亨) invented inductance he used to hang out with Hamlet (h) a lot in front of the engine ((e)ng1). One day he observed Hamlet shifting a mandarin (口) from a price cup (了) to a beret (亠) and vice versa, which gave him the idea of putting an iron core into an electromagnet.
特
=
寺
+
牛
:
Tecumseh (t) has a very special (特) mount: In contrast to the other Indians he rides a bull (牛). Moreover, the bull is so special (特) that it meditates in front of the Buddhist shrine (寺) in the elevator's bathroom (e4) together with Tecumseh.