Force & Motion
The bizarre brilliance of bismuth
Schlieren flow visualization reveals the structure of a sonic boom
Clouds form enormous eddies over the Juan Fernandez islands.
A layer of meltwater keeps ice moving through fluid with minimal turbulence.
A close look at the dangers of space dust.
Tiny filament "flags" leave beautiful fluid wakes
How do people lie on a bed of nails without leaving a mark?
The physics behind the iconic celebration
What happens when two gold ions collide
An atomic force microscopy (AFM) scan reveals several hundred tobacco mosaic virus particles.
Experimental evidence suggests that the human genome may bundle into these unknotted fractal globules.
Pressing liquids as flat as possible yields unique designs.
Ever wonder how streams form? Physicists are using models to better understand the branching of streams.
The simple act of bouncing a ball may not conjure up feelings of physics, but there is more physics going on than meets the eye.
Tags: Force and Motion
These images captured the moment streams of liquid collide, bending the streams and forming beautiful images.
What looks like a unique airplane was actually the first helicopter to make a controlled flight.
A smoke-ring flow pattern - or vortex ring--can develop, pinch-off, and be regenerated, all without forces, when the flow is driven by chemical reactions.
What does dancing have to do with physics? One photographer uses his understanding of light and technology to capture fire dancing and hula hooping, which inadvertently reveal different forces in physics and the nature of light.
This train has endured space and time to teach physics to those wandering through the Bolivian desert.
Oil is slick but did you know it can also bounce?
The frictionless flow of atoms within solid helium may be confined to the axis of a screw dislocation, a spiral defect like the one in this crystal of silicon carbide.
The scanning tunneling microscope (STM) can make impressive images of single atoms and molecules on surfaces; now it has been used to measure a molecule's internal motion.
Puny tremors may be the real movers and shakers of the seismic world.