4. Iron, Crystals, and the Second Law
4.1 A Close Look at Real Iron
4.1.1 Microscopes
4.1.2 Metals are Crystals
4.1.3 Young's Modulus and Bonding
4.2 A Powerful Threesome
4.2.1 Be Dense!
4.2.2 Being Iron
4.3 The Second Law
4.3.1 Nirvana for Crystals
4.4 Inside a Perfect Crystal
4.4.1 Perfect Crystals and the Second Law
4.4.2 Moving Atoms Around
© H. Föll (Iron, Steel and Swords script)