Question

ਪ੍ਰਸ਼ਨ , ਸਭਿਆਚਾਰ ਤੇ ਉਪ-ਸਭਿਆਚਾਰ ਵਿਚ ਕੀ ਫ਼ਰਕ ਹੁੰਦਾ ਹੈ ?
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Answer 1

Good afternoon........... ✌️✌️At extremely low temperatures, silicon and germanium expand with cooling rather than heating. The effect is called negative thermal expansion. The same applies to carbon fibres and certain exotic glass-like materials and metal alloys.