Topography / How Things Work

12 lessons and 37 connections between them, based on the cross-references in each lesson. Lines show references. For reading order, seethe How Things Work track page.

• Entropy - why time only points forward2 lessons link here
• Cold Is a Lie - fridge, AC, heat pump8 lessons link here
• Your Remote Throws Invisible Light - the EM spectrum2 lessons link here
• Why a Fan Cools You, Not the Room - evaporation & boundary layers3 lessons link here
• The Socket Is a Waterfall - volts, amps, watts and the bill5 lessons link here
• Spin From a Wire - motors, generators, speakers and the induction hob2 lessons link here
• Twice the Speed, Four Times the Stop - braking, crumple zones and seatbelts4 lessons link here
• Three Lights Pretending to Be Every Colour - screens, eyes and cameras2 lessons link here
• Every Plug Ends at a Spinning Magnet - power stations, fission and the solar exception2 lessons link here
• The Lid That Cooks Faster - boiling point, pressure cookers, tyres and taps2 lessons link here
• Why You Can See Through Sand - band gaps, glass, metal and silicon3 lessons link here
• Your Home, Estimated - Fermi problems and a home energy audit2 lessons link here