- 001Nothing is colouredLight has a wavelength. Matter has energy gaps. Neither of those things is a colour. Colour is what your nervous system makes of the gap between them — and it makes it out of three numbers.10⁻¹⁰ m → 10⁻² m
- 002The sea keeps timeHigh water is not the moon overhead. The tide at any port is a chord — a handful of pure tones at frequencies fixed by astronomy, with amplitudes and phases the port alone decides — and a machine made of pulleys and cranks could sum it years ahead.3.84 × 10⁸ m → 18.6 yr