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).
副
=
刂
+
畐
:
Frieda Fox (fu) has to tidy up the space station's bathroom (Ø4) and therefore has to cut a lot of bubble wrap (畐) with a kitchen knife (刂). As a side effect (副) it is really relaxing to pop the bubbles.