Fuel Gel Flame

This image shows the flame from a fuel gel, burning in a heat-resistant petri dish. The fuel gel is created from calcium carbonate, acetic acid, and isopropyl alcohol. Calcium carbonate bonds to the acetic acid, creating calcium acetate. When mixed with isopropyl alcohol, a gel that can be used as a fuel source is formed. This gel is commonly known as “Canned Heat”.

Droplets of glycerin on a CD reflect and refract light while the CD diffracts it.

Droplets of glycerin on a CD reflect and refract light while the CD diffracts it.

A jet of air impinges on a water surface, deforming it.

A jet of air impinges on a water surface, deforming it.

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

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

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

Two images of vortex rings, color shifted and overlaid.

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