writing in the water

I think this is amazing!
Some Japanese researchers discovered a way to use multiple waves to create letters. This set up can write every letter of the Roman alphabet 4cm high.
I say again, i think this is amazing!

I think this is amazing!
Some Japanese researchers discovered a way to use multiple waves to create letters. This set up can write every letter of the Roman alphabet 4cm high.
I say again, i think this is amazing!
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