In the News
North Korea's Sixth Nuclear Test
4th September 2017
Here's a practical activity involving logarithms. North Korea conducted its sixth nuclear test on 3 September 2017. The effect of this detonation was detected using a seismometer. Here's an activity where students compare the amplitude of the tremors that resulted from the detonation, using the formula for magnitude on the Richter scale and logarithms.
![](https://tutor2u-net.imgix.net/subjects/maths/North-Koreas-Sixth-Nuclear-Test.png?auto=compress%2Cformat&fit=clip&q=80&w=800)