Engranaje planetario y Placa de Petri: qué tienen en común

1. Paso 1. Engranaje planetario — forma parte de — Máquina de vapor de Watt. Watt’s “sun and planet” gear got around the patent on the crank.
2. Paso 2. Máquina de vapor de Watt — utiliza — Carbón. Steam engines were fired with coal.
3. Paso 3. Carbón — es material para — Tinte sintético. Aniline from coal tar.
4. Paso 4. Tinte sintético — evolucionó en — Sulfonamidas. Prontosil was a red dye.
5. Paso 5. Sulfonamidas — funciona como — Antibiótico. The first mass-market antibacterial drugs were synthetic sulfonamides; penicillin was discovered earlier (1928) but went into production later.
6. Paso 6. Antibiótico — utiliza — Placa de Petri. Fleming noticed mould in a Petri dish.

Abrir Evothings