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BrainStuff

BrainStuff is a podcast that releases short (usually under 15 minutes) episodes daily. They usually offer a short introduction to a specific topic. They often speak quite fast during the episodes, so don’t forget you can slow down the audio in most podcast apps.

BrainStuff: How Do We Define the Kilogram

How Do We Define the Kilogram

Listen to the podcast and answer the following questions.

  1. What happened to the platinum kilogram prototype?
  2. How do we now measure the second?
  3. Are there any other SI units that have been updated?

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