Theory of evolution and electrical telegraph: what they have in common

1. Step 1. Theory of evolution — uses — Cell theory. Biology.
2. Step 2. Cell theory — uses — Microscope. Observing cells.
3. Step 3. Microscope — evolved into — Electron microscope. Overcoming the limit of optics.
4. Step 4. Electron microscope — uses — Electromagnet. Magnetic lenses.
5. Step 5. Electromagnet — is part of — Electrical telegraph. Morse’s receiver.

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