#BTCWhaleTracker 🕰️ Before Alarm Clocks — Time Signals with Candle and Pins. Before alarm clocks were invented, people used “Candle Clock Alarms” by sticking pins into candles at measured points. As the candle melted, the pin would fall — creating a sou

#BTCWhaleTracker 🕰️ Before Alarm Clocks — Time Signals with Candle and Pins.
Before alarm clocks were invented, people used “Candle Clock Alarms” by sticking pins into candles at measured points.
As the candle melted, the pin would fall — creating a sound that worked as an alarm!
✅ Simple materials
✅ Accurate time calculation
✅ Popular in the Middle Ages
How do you like this surprising tech fact?
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