Material that has a transition from a stiff outside to a flexible inside can distribute an impacting force over a larger area,” says researcher Marie-Christin Klein.
Onimdefo bi kyerɛkyerɛ mu sɛ: “Biribiara a akyire yɛ den kyɛn emu no, sɛ biribi bɔ so a, entumi nsɛe no ntɛm.