The light from sparks generated by grinding steel was refracted by water, reflected by a mirror, and then refracted again as it exited the tank.

By Aaron Porras, Lotem Sella, Paul Sweazey, Wayne Russell, Kelsey Spurr for Spring 2013 Team Second.
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The light from sparks generated by grinding steel was refracted by water, reflected by a mirror, and then refracted again as it exited the tank.

A rose can survive a fire for a time by being first frozen in liquid nitrogen.

A rose can survive a fire for a time by being first frozen in liquid nitrogen.

Food coloring manually swirled into corn syrup.

A smoke ring from an Airzooka impacts a black grill lid.

Two images of vortex rings, color shifted and overlaid.

Seven images of vortex rings were colored and layered. The vortex rings were of stage fog, ejected from a bucket with an orifice lid.

A sequence of vortex ring images. The rings were of stage fog, ejected from a bucket with an orifice lid.

Vortex rings visualized with stage fog interact, filmed at 240 fps. The rings were squeezed out of a bucket with an orifice in the lid.

Two vortex rings visualized with stage fog interact. The rings were squeezed out of a bucket with an orifice in the lid.