💡The Phoebus cartel established a 1,000-hour lifespan standard for incandescent light bulbs.
📉Longer-lasting bulbs were available but produced less light per watt.
⚖️The lifespan-efficiency trade-off was a physical reality that the cartel had to balance.
💡Efficiency was crucial for power generation companies included in the cartel.
🏭Mass-production made light bulbs affordable and not precious objects.