Template:Motd/2020-06-28 (en)
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![](https://upload.wikimedia.org/wikipedia/commons/thumb/9/97/GWM_HahnEchoDecay.gif/300px-GWM_HahnEchoDecay.gif)
Spin echo animation showing the response of spins (red arrows) in the blue Bloch sphere to the green pulse sequence.
![](https://upload.wikimedia.org/wikipedia/commons/thumb/9/97/GWM_HahnEchoDecay.gif/300px-GWM_HahnEchoDecay.gif)
This is the English translation of the Media of the day description page from 28 June 2020.
Descriptions in other languages: