What can I learn right now in just 10 minutes that could be useful for the rest of my life?

Answer by Vishnu Haridas:

This one I discovered recently: If you get an unusable headphones, don’t throw it away. You can cut & remove the wire, and use the TRS jack as the FM antenna for your smartphone.

All you need is to plug-in this TRS jack into your phone’s headphones plug, and open the FM radio app, then start listening through your loudspeaker.

How it works: The headphones wire works as the FM antenna for mobile phones. Usually FM transmission will have a very strong signal, which needs a small piece of wire to receive the signal.

What can I learn right now in just 10 minutes that could be useful for the rest of my life?

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