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A comment on Helium shortages will impact quantum computer research. Parent comment

Re:Helium shortages will impact quantum computer research by astrodust on Friday April 19, 2019 @09:03PM (#19704224)
Good point but it also means that if you can keep it precisely in the 2.2K to 4.2K range then nothing strange happens.

That's a pretty narrow band to operate in.

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Re:Helium shortages will impact quantum computer research by jeffwass on Saturday April 20, 2019 @02:08AM (#19705062)
It’s a wider range than you think. Temperatures work logarithmically.

The lambda point occurs at roughly half the absolute temperature of the boiling point.

For comparison room temp is roughly 300K, and half of that is 150K or minus 120°C.

Would you call the temperature range between minus 120°C and room temp (call it 20°C) a “narrow band”?

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