Technology
Why Do Blackouts Happen, and Why a Grid Protects Itself
The picture of a grid running out of electricity is wrong. There is no tank, frequency is the live readout of the balance, and a cascade is the protection working.
Topic
Infrastructure
2 stories
Technology
How Does GPS Work, and Why It Cannot Track You
Your phone sends nothing to the satellites. What the fourth satellite is actually for, why orbital clocks run 38 microseconds fast a day, and where tracking really comes from.