Pila voltaica y Telar Jacquard: qué tienen en común
- Paso 1. Pila voltaica — utiliza — Corriente continua. It produces direct current.
- Paso 2. Corriente continua — se utiliza en — Amperímetro. In a school circuit the ammeter shows the direct current from the battery.
- Paso 3. Amperímetro — utiliza — Electromagnetismo. Current in the coil creates a magnetic field, and the needle turns further the larger the current.
- Paso 4. Electromagnetismo — se utiliza en — Tabuladora de Hollerith. The counters click with electromagnets.
- Paso 5. Tabuladora de Hollerith — utiliza — Tarjeta perforada. The 1890 census data was encoded on punched cards.
- Paso 6. Tarjeta perforada — se utiliza en — Telar Jacquard. Each punched card sets one pass of the pattern.