3 ms·
This reminds me of how the London Underground used to be much cooler, but the trains have raised the temperature of the clay surrounding the tunnels sufficientl
by michaelbuckbee 5y ago
This reminds me of how the London Underground used to be much cooler, but the trains have raised the temperature of the clay surrounding the tunnels sufficiently that it never cools off:
https://en.wikipedia.org/wiki/London_Underground_cooling https://en.wikipedia.org/wiki/London_Underground_cooling
- mastax 5y agoRelevant: https://youtu.be/Y8RfeAmLfn8 https://youtu.be/Y8RfeAmLfn8 There's also all the body heat, and the resistive braking of the trains which is being phased out.