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and if it is less dense than water it will float. Download the student activity sheet and distribute one per student when specified in the activity. The activity sheet will serve as the Evaluate ...

Some patterns act like tweezers or a "tractor beam" to hold the floating balls in place on the water's surface so they do not drift away. Others cause the balls to spin about on their centers and ...

Some patterns act like tweezers or a "tractor beam" to hold the floating balls in place on the water's surface so they do not drift away. Others cause the balls to spin about on their centres and ...

Researchers manipulated water waves to move ping pong balls with a level of precision that seems straight out of a sci-fi movie.

Place a ball on top of the vacuum cleaner. Turn on the vacuum. Notice that the ball is floating in the air. Replace the ball with a different-sized ball or a plastic bottle. Try floating two styrofoam ...

The method involves generating and merging water waves to create complex surface patterns, such as twisting loops and swirling vortices. Laboratory experiments showed that these patterns can pull in ...

One setup featured a ring connected to 24 tubes linked to speakers emitting low-pitched sounds, creating ripples on the water’s surface. They tested floating polyethylene foam balls (4.8mm to 12 ...