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For discussing anything related to a software developer's life but is not for programming questions. Got a programming question?

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 Re: Your mileage may vary W∴ Balboos, GHB10-Dec-20 3:07 W∴ Balboos, GHB 10-Dec-20 3:07
 Re: Your mileage may vary Gerry Schmitz10-Dec-20 4:41 Gerry Schmitz 10-Dec-20 4:41
 Re: Your mileage may vary W∴ Balboos, GHB10-Dec-20 5:15 W∴ Balboos, GHB 10-Dec-20 5:15
 Re: Your mileage may vary Marc Clifton10-Dec-20 5:15 Marc Clifton 10-Dec-20 5:15
 Article Wizard Borked #realJSOP9-Dec-20 12:31 #realJSOP 9-Dec-20 12:31
 Re: Article Wizard Borked Rage9-Dec-20 20:23 Rage 9-Dec-20 20:23
 Re: Article Wizard Borked RickZeeland9-Dec-20 20:27 RickZeeland 9-Dec-20 20:27
 How do you create extremely low temperatures? trønderen9-Dec-20 11:06 trønderen 9-Dec-20 11:06
 This is way beyond my professional field. I have no clue at all, that is why I ask: This corona vaccine must be stored at -70C or lower. The common technology for a fridge, a freezer or a heat pump, is to spray some cooling liquid through a nozzle so that it goes from a liquid to a gas - 'evaporates', if you like. This state transition draw a lot of energy from the environment. But there is a limit to that. If the evaporated gas never goes below, say, -35C, then the environment will not be drawn below that. So how to you, artificially, create extremely low temperatures? I guess that there exist (most likely extremely expensive) fluids that, by evaporation, can go several degrees below what is used in our deep freezers. But 'several degrees' is not enough when you need forty to fifty of those degrees... The learning I did in my school days simply doesn't cut it! How to they create super-cold temperatures nowadays? I'd be satisfied with appropriate links to replace explanations. Even suggestions for focused google search terms would be nice!
 Re: How do you create extremely low temperatures? `Randor` 9-Dec-20 11:23 `Randor` 9-Dec-20 11:23
 Re: How do you create extremely low temperatures? Chris Maunder9-Dec-20 11:24 Chris Maunder 9-Dec-20 11:24
 Re: How do you create extremely low temperatures? Chris Maunder9-Dec-20 11:23 Chris Maunder 9-Dec-20 11:23
 Re: How do you create extremely low temperatures? Mycroft Holmes9-Dec-20 12:26 Mycroft Holmes 9-Dec-20 12:26
 Re: How do you create extremely low temperatures? Chris Maunder9-Dec-20 12:53 Chris Maunder 9-Dec-20 12:53
 Re: How do you create extremely low temperatures? Jörgen Andersson9-Dec-20 11:25 Jörgen Andersson 9-Dec-20 11:25
 Re: How do you create extremely low temperatures? BobbyStrain9-Dec-20 11:43 BobbyStrain 9-Dec-20 11:43
 Re: How do you create extremely low temperatures? OriginalGriff9-Dec-20 11:27 OriginalGriff 9-Dec-20 11:27
 Re: How do you create extremely low temperatures? Gary R. Wheeler9-Dec-20 13:30 Gary R. Wheeler 9-Dec-20 13:30
 Re: How do you create extremely low temperatures? raddevus9-Dec-20 11:46 raddevus 9-Dec-20 11:46
 Re: How do you create extremely low temperatures? Mike Hankey9-Dec-20 12:02 Mike Hankey 9-Dec-20 12:02
 Re: How do you create extremely low temperatures? #realJSOP9-Dec-20 12:20 #realJSOP 9-Dec-20 12:20
 Re: How do you create extremely low temperatures? DRHuff9-Dec-20 13:49 DRHuff 9-Dec-20 13:49
 Re: How do you create extremely low temperatures? Rage9-Dec-20 20:18 Rage 9-Dec-20 20:18
 Re: How do you create extremely low temperatures? GenJerDan9-Dec-20 22:37 GenJerDan 9-Dec-20 22:37
 Re: How do you create extremely low temperatures? Maximilien10-Dec-20 0:28 Maximilien 10-Dec-20 0:28
 Re: How do you create extremely low temperatures? W∴ Balboos, GHB10-Dec-20 3:26 W∴ Balboos, GHB 10-Dec-20 3:26
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