Zelenskyy says "time to make things right" after tense meeting with Trump Stuck NASA astronauts prepare to return: 'We want to go home' Iceberg twice the size of Greater London runs aground near ...

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 centres 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 centers and ...

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

This is a large white floating ball that has LEDs inside and cycles through different colors. Meant to be put into a pool for neat effects, we found it to be much more interesting just used around ...