Binoculars and computer: what they have in common

1. Step 1. Binoculars — has part — Prism. Porro prisms flip the image.
2. Step 2. Prism — is part of — Spectroscope. A prism.
3. Step 3. Spectroscope — is used in — Helium. Helium was discovered by spectroscopy in the solar spectrum.
4. Step 4. Helium — is material for — MRI. The magnet is cooled with liquid helium.
5. Step 5. MRI — uses — Computer. Image reconstruction.

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