Hat band ribbon and railway track: what they have in common

1. Step 1. Hat band ribbon — is part of — Van de Graaff generator. It carries charge upwards.
2. Step 2. Van de Graaff generator — evolved into — Particle accelerator. Early accelerators.
3. Step 3. Particle accelerator — uses — Electromagnet. Bending magnets.
4. Step 4. Electromagnet — is part of — Electrical telegraph. Morse’s receiver.
5. Step 5. Electrical telegraph — is used in — Time zones. Synchronizing time by telegraph.
6. Step 6. Time zones — was inspired by — Railway track. Introduced because of railway timetables.

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