Balance beam y telescopio: qué tienen en común

1. Paso 1. Balance beam — forma parte de — Shaduf. A long pole acting as a lever.
2. Paso 2. Shaduf — utiliza — Palanca. A shaduf is a lever with a counterweight.
3. Paso 3. Palanca — se utiliza en — Telégrafo óptico. The arms were moved by a system of levers and rods.
4. Paso 4. Telégrafo óptico — utiliza — Telescopio. Signals were read through a telescope.

Abrir Evothings