律

律 = 彳 + 聿 : Loki (lü) wants to prove the inverse square law (律) of electrostatics in the space station's bathroom (Ø4). He repeatedly rubs a decorator's brush (聿) against the soles of his black sneakers (彳) and thereby transfers electrons from the shoe soles to the brush. Now that both are charged, they will attract each other according to the inverse square law (律). To measure the amplitude, Loki uses Hook's law (律): when the black sneaker is attracted to the brush it will bend the bristles of the brush until the two forces cancel each out.

彳 = 丿 + 亻 : Mnemonic symbol for the step with the left foot: a black sneaker, because black sneakers are popular at least with the leftists I met.

Rosa Luxemburg (亻) just finished her banana (丿) and throws the peel over her shoulder in the space station's bathroom (Ø4). Charlie Chaplin (彳), wearing a black sneaker on his left foot, manages to step on the banana peel with his left foot and fall over even in zero gravity.

聿 = 二 + 肀 : Mnemonic symbol: a broad decorator's brush.

Yu the Great (yu) is painting in the space station's bathroom (Ø4). First she paints backgrounds with a decorator's brush (聿), then applies some details using a crayon (肀), and finally she discharges a capacitor (二) on the canvas for special effects.