二
=
一
:
Mnemonic symbol: a capacitor, because the two strokes remind me of the symbol in electrical drawings. Albert Einstein (Ø) is experimenting with a capacitor (二) in the space station's bathroom (Ø4). He finds that it's uncomfortable to discharge a capacitor using two flutes (一).
价
=
亻
+
介
:
Joan of Arc (ji) and Rosa Luxemburg (亻) are plotting their escape from the ashram in the bathroom (a4). They plan to use the ashram's rocket (介), but unfortunately, the price (价) for rockets is sky-high.