By sending a sound wave intothe wall and reading the echo, we can detect how thick it is...
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By sending a sound wave into
the wall and reading the echo, we can detect how thick it is and whether there's a cavity
on the other side
the wall and reading the echo, we can detect how thick it is and whether there's a cavity
on the other side
Full Transcript
00:00:01.000 --> 00:00:04.092
By sending a sound wave into
the wall and reading the echo,
00:00:05.000 --> 00:00:06.068
we can detect how thick it is
00:00:06.076 --> 00:00:09.002
and whether there's a cavity
on the other side.
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Movie Summary
Using cutting-edge technologies such as ground penetrating radar (GPR), LIDAR (Light Detection and Ranging), and 3-D imaging, scientists research fascinating underworlds of secret tunnel networks, ancient structures, and bizarre g...
