Cryogenics temperature ranges from ______ to absolute zero.

Cryogenics temperature ranges from ______ to absolute zero.

• A. -300 C
• B. -260 C
• C. -275 C
• D. -250 C

Answer: (D)

Cryogenics deals with temperatures extremely close to absolute zero, which is -273.15 C. When we say a range from a value to absolute zero, that starting value must be warmer than absolute zero. A commonly cited cryogenic boundary is about -250 C, so the range is from -250 C down to absolute zero. Absolute zero is the lowest possible temperature, so you can't go below it. The other numbers either fall below absolute zero (not physically meaningful) or are not the conventional lower bound used to describe the cryogenic range.

Cryogenics deals with temperatures extremely close to absolute zero, which is -273.15 C. When we say a range from a value to absolute zero, that starting value must be warmer than absolute zero. A commonly cited cryogenic boundary is about -250 C, so the range is from -250 C down to absolute zero. Absolute zero is the lowest possible temperature, so you can't go below it. The other numbers either fall below absolute zero (not physically meaningful) or are not the conventional lower bound used to describe the cryogenic range.