Hot, hot, hot. That’s what happens when something—say, the wheel of an F1 car—is spinning so impossibly fast and then gets immediately clamped down by the brakes. It glows and pulsates a wonderful orange that looks almost like molten steel.
This footage from Brembo testing their brakes shows how it all happens.
This article originally appeared on Sploid, a Gizmodo blog of delicious brain candy