Magnifying glass e r-7 rocket: o que têm em comum

1. Passo 1. Magnifying glass — evoluiu para — Óculos. Reading stones — magnifying lenses — preceded glasses.
2. Passo 2. Óculos — evoluiu para — Telescope. The first telescopes were assembled by spectacle makers.
3. Passo 3. Telescope — inclui — Space telescope. A space telescope is a telescope above the atmosphere, so air does not blur the view.
4. Passo 4. Space telescope — tem como parte — Gyroscope. Pointing gyroscopes.
5. Passo 5. Gyroscope — faz parte de — V-2 rocket. A gyroscopic guidance system.
6. Passo 6. V-2 rocket — evoluiu para — R-7 rocket. The Soviet rocket programme began by studying the V-2 (the R-1 was its copy).

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