Nobel prizewinner: We are running out of helium

 作者:段庋     |      日期:2017-11-01 02:01:00
By Clint Witchalls Robert Richardson worked on the superfluid properties of helium – now he worries that we are squandering our supplies of the gas Most of us think of helium as something to fill balloons with or that makes your voice go funny when you inhale it. Why does it matter that helium supplies are running low? There are some substitutes, but it can’t be replaced for cryogenics,