That classical failure at short wavelengths is called the ultraviolet:

Question

Accepted Answer

B. Catastrophe

1. The prediction blows up at high frequency.
2. Observation shows nothing of the sort.
3. The failure is the ultraviolet catastrophe.
_Source: OpenStax University Physics Volume 3, Chapter 6, Photons and Matter Waves._

Answer

Cartilage

Answer

Cartography

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Cataloguing

That classical failure at short wavelengths is called the ultraviolet:

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