Helium. Who needs it anyway? Well, as it turns out, helium isn’t just about party balloons and doctors around the world are worried about a global helium shortage. Helium is used in MRI machines - each MRI needs about 2,000 litres of ultra-cold liquid helium to keep the MRI magnets cool enough to work. Helium, a nonrenewable element found deep within the Earth’s crust - is running low. Part of the global helium shortage is due to a failure in a crude helium enrichment plant in Texas and declining or unreliable production from existing sources, and the delay in Russia’s helium facility coming on-line. This is the fourth time the world has suffered a helium shortage since 2006. As well as balloons and MRI, helium is also used in high-speed internet, computer hard drives, airbags in cars, and as a coolant in nuclear reactors. It’s also used in weather balloons - which are released from 900 locations worldwide a couple of times a day. Hopefully the helium supply will improve soon, and that there are plans in place for dealing with Helium Shortage 5.0 should it happen.
Monday, October 24, 2022
Helium
Up front training
How much training should you have before you can run “front of house” at a cafe? We went to our usual Sunday morning venue today - and, admittedly it has had a change of management and it would also seem a change of staff, but you would think they would still be able to run a cafe properly … like knowing how old the croissants are, and when the jam is out of date … and to deliver the take-away coffee order (for multiple cups) to the table, the same way the previous management did. I was not impressed. But then, when collecting the coffees from the barista, that the server (who managed the get our coffee order wrong) was just “filling in” - I would suggest not very well but then again it might have just been that he had no specific training or maybe he was feeling put upon because he had been called in to work on the till. It looked as though there wasn’t much help for him either, so that might have been affecting his performance a little as well.
Saturday, October 22, 2022
In a word
Up in the air
Intelligent AI?
The long and short of it
Why did the T-Rex have such short arms? A study published in the journal Acta Paleontologica Polica suggested that the T-Rex evolved short arms because they fed in packs - and by having short arms it meant they wouldn’t bite off each other’s arms. Or was it a matter of the arms didn’t get shorter but that the legs got longer - that’s a suggestion put forward by John Hutchinson at London’s Royal Veterinary College who is an expert in the biomechanics of movement in large terrestrial animals - both living and extinct - who also noted that there was no way we could really know what was involved or the triggering factors. It is interesting to think about this piece of evolution differently though - because we do tend to think of T-Rex anatomy and the short arms that way.