How a Legacy From the 1800s Is Making Tokyo Dark Today


A strange legacy of the Japanese power system’s infancy in the late 1800s is complicating efforts to keep Tokyo supplied with electricity.

The problem, as explained by IDG News Service’s Martyn Williams, is that half of the country uses power whose current alternates at 60 Hz, while the other half gets its power at 50 Hz.… Read the rest

How a Legacy From the 1800s Is Making Tokyo Dark Today