Every week in Brain Train, an expert is asked about their specialist subject - then the following week, the expert becomes the novice, asking an expert in a totally different subject what they've always wanted to know. This process repeats in a glorious Brain Train!
https://soundcloud.com/brain-train-podcast
Brain Train Podcast #11 - Alexandra Lamont and Jonathan Williams
This episode Alexandra Lamont asks NPL standards expert Jonathan Williams "where are you going with that massive silicon ball?" and other pressing questions about kilograms, seconds, mols and candelas. Martin Zaltz Austwick is this week's biscuit sourcer and audio sourcerer.