Solutions Branch of physics concerned with producing very low temperatures has 5 entries with similar clues

• 6-letter words
• freezeBecome solid because of low temperatures
• 9-letter words
• cryogenicConcerned with creating ultralow temperatures
• 12-letter words
• fluorescenceLight emission at low temperatures through chemical or atomic process
• luminescenceLight emission at low temperatures through chemical or atomic process
• 15-letter words
• phosphorescenceLight emission at low temperatures through chemical or atomic process