Simply Nuts
Q. What are the chances of picking out a Brazil nut when you plunge your hand into a jar of mixed nuts without looking?
A. Considerably better if you tap the jar on the table a few times first. But why ...?
You will need:
- A jar of mixed nuts
- A tabletop
- A hand
What to do:
- Unscrew the lid of the jar and see which nuts are on the surface. There’s sure to be at least one Brazil nut.
- Push the Brazil nut(s) down below the surface.
- Screw the lid back on and give it a gentle thump on the table a few times.
- Now look inside again. Aha!! How did that happen?
What's happening?
The Brazil nut(s) are larger than the other nuts in the jar. As you tap the jar the Brazils move upwards which allows the other smaller nuts to fall beneath it and take up the space it leaves. Since the Brazil nut is fairly smooth, the friction between it and the other nuts is low which makes it easier for other nuts to slip beneath it. As you continue to shake the jar the Brazil nut will gradually move upwards until it is finally sitting on the surface. Cunning eh?
You can also try this trick with a jar of rice and a marble or small rubber ball.
Now all you have to do is practise this a few times then get someone to video you and hey presto! You could have a winning clip for Planet Scicast. Easy eh? So what are you waiting for? Roll ‘em!
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