3 ms·
One MRI machine uses about 2,000L of liquid He, which expands to around 1:770 in gaseous form. So roughly 1,540,000L of helium gas per machine.
by joezydeco 2y ago
One MRI machine uses about 2,000L of liquid He, which expands to around 1:770 in gaseous form. So roughly 1,540,000L of helium gas per machine.
- banish-m4 2y agoMRI machines borked the MEMS accelerometers in iPhone due to helium contamination. I assume most smartphone sensors are now helium-tolerant.
- joezydeco 2y agoNope. They just added a warning so it's your fault if you get any helium atoms in your oscillator. https://support.apple.com/guide/iphone/important-safety-information-iph301fc905/ios#:~:text=Exposing%20iPhone%20to%20environments%20having,damage%20or%20impair%20iPhone%20functionality https://support.apple.com/guide/iphone/important-safety-info....
- lazide 2y agoLegalese - even cheaper than engineering, apparently.
- Y_Y 2y agoGE says over its lifetime (roughly 13 years) an MRI machine will use about 1e4 litres of liquid helium. Two thousand litres is a good estimate for the capacity of a machine, but it's not a useful figure unless you know how often you need to replenish it.