How cold can it get?

Cryogenics is the science of cold. But how cold is cold? In this video, Fermilab scientist Dr. Don Lincoln tells us about some of the most amazing achievements in cryogenic science. And there is no truth to the rumor that he sings at the end.

Fermilab physics 101:

Fermilab home page:

[FireAngelOfLondon]

OK, now I would love a video about negative temperatures please! Thanks for this one too, I had no idea they had come so close to absolute zero.

[austincrain]

You can’t drop a gem like “negative kelvin” without a follow up video! Looking forward to it!

[bobbyd.roberson]

I’d absolutely love to see a video about negative temperatures

[turboenterprise]

Dont stop the videos man. Keep them rolling

[shadowatl]

Never stop making these videos Dr. Lincoln!!! I have learned so much with your down to Earth teaching style. And from that I dug deeper into topics that intrigued me and learned so much more. The way you taught relativity and gravity finally got me past the hurdle I had been having fully understanding those concepts and their implications. Thank you so much and see you on 12/9/22. I'll be prepared with lots of questions if there is a Q&A.

[NotJustBikes]

I got so annoyed that you kept mentioning the temperature in Fahrenheit, but never once mentioned the temperature in Rankine. smh

[andrewpinkham]

i like your sense of humor.i also enjoy the way you simplify the concepts without coming off as condescending.Thats a trait of someone that's genuinely intelligent

[David-dibo]

Pretty sure the coldest spot in the universe is my bathroom floor in the morning.

[mdwoods]

I love the Fermilab videos. The presentation makes it easy to understand what are often difficult subjects

[tigertiger]

What is an absolute privilege.🙏🙏 for all of us who never went to uni.., and certainly no where near a lab.. to get to hear from / share in Fermilab..
way cool👍… cheers

[jacoblashley]

Definitely want to know more about negative temperatures now!

[siddharthsingh]

Measuring it to be 38picokelvin is another genius.

[nathanmays]

I’m more interested in how a thermometer is capable of measuring those temperatures, than how the temperatures were achieved.

[DavidBeddard]

I once saw the coldest place in the known universe. It was in a cupboard in the Physics department at Lancaster University in 2008. At they time, they held the record for the coldest temperature yet achieved. They've lost that record since then, of course, to those Rubidium atoms Don mentioned.

[tastethejace]

Fascinating! Excellent vid as always! Keep up the great work! 👍

[robertfletcher]

Dr. Don, we need a video to explain the other end of hot, as with Absolute Zero and the explanation of Planck Temperature. There is stuff on the Internet but a Dr Don explanation would be much better.

[luvhateluv]

Dude, glad you are still rockin the fermilab vids! Your articulation and humor are Absolute.

[OriginalStachuJones]

Thank you for all the effort you put into your videos

[sapelesteve]

I must say Dr. L that this was a very very cool video! Good seeing you back here! 👍👍💥💥

[andresdelaguardia]

I'd love to see a video on how those nano and pico-Kelvin temperatures are measured. The instruments to measure those crazy cold temperatures must be as amazing as the processes to create the crazy cold temperatures.