Question

ਜਦੋ ਅਸੀਂ ਜੁਬਾਨੀ ਸੰਚਾਰ ਕਰ ਦੇਹਾਂਤਾ ਅਸੀਂ ਕੀ ਵਰਤਦੇ ਹਾਂ​

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.