N010 stop-time calc · run 2026-10-18T19:23:46.076Z · node v24.21.0

1. Normal time
  Light, phone 1 ft from your eyes: 1.02 ns
  Sound, friend 6 ft away: 5.45 ms

2. Time-scale ladder (world speed s; wizard's own clock)
  s = 1e+0: light 1 ft -> 1.02 ns · sound 6 ft -> 0.005 s
  s = 1e-3: light 1 ft -> 1,020 ns · sound 6 ft -> 5.45 s
  s = 1e-6: light 1 ft -> 0.001 s · sound 6 ft -> 1.52 h
  s = 1e-9: light 1 ft -> 1.02 s · sound 6 ft -> 63.1 days
  s = 0 (stopped): light 1 ft -> never · sound 6 ft -> never

3. Toy sim: photons in flight (100,000 evenly spaced over 1 ft) that reach the eye in 1 s of wizard time
  s = 1e+0: 100,000 of 100,000
  s = 1e-9: 98,357 of 100,000
  s = 1e-12: 98 of 100,000
  s = 0 (stopped): 0 of 100,000

4. Air molecules (ideal gas, 101.325 kPa, 20 C)
  per cubic centimeter: 2.503e+19 (~25 billion billion)

5. Hau 1999 slow light
  17 m/s = 38 mph; c / 17 m/s = 17,600,000 times slower
  Hau 2001: stopped for ~1 ms (source, not computed)