The most incredible thing you'll
watch today is this video of sand [UPDATE]
Stop what you're doing and watch this! It's a video of
sand. Sand skittering around on a vibrating plate, to be exact. But what
happens when that sand skitters is amazing. Trust us – this is something you
want to see.
What you're watching is the Chladni plate
experiment, as performed by YouTube science-and-illusion wizard
Brusspup (he can also coax water into a
zig-zagging stream, and make Rubik's
Cubes that aren't Rubik's Cubes).
RELATED
How to make a stream of water
zig-zag using sound waves
This may look like a
magic trick, but YouTube user Brusspup is just using the science of sound waves
and camera frame rates to make this stream of… Read…
This anamorphic optical illusion is
the most mind-bending thing you'll see today
This is not a Rubik's
Cube. We know it looks like a Rubik's Cube, but trust us. It isn't. It's an
illusion — an anamorphic… Read…
When physicist Ernst Chladni performed this experiment in
the 18th century, he did it with flour instead of sand, and made his metal
plate vibrate with a violin bow instead of a tone generator, but the end result
is the same: when the plate vibrates at a steady frequency, the particles on
its surface arrange into a beautiful pattern.
The particles (sand, in this case) are arranging themselves
along what are called "nodal
lines" – narrow curves of motionless calm that criss-cross the
otherwise vibrating surface. As the frequency changes, so does the distribution
of these nodal lines, which becomes increasingly intricate
at higher frequencies.
UPDATE: Brusspup has
uploaded the full video of the experiment, with tones. WARNING: LOWER YOUR
VOLUME. The audio in the clip could cause hearing damage.
No comments:
Post a Comment