The architect used several circular arcs to soften the building's silhouette.

As the fireworks ignite, a plume of smoke arcs up into the night sky.

Scientists mapped the nocturnal arcs of the bioluminescent plankton as they drifted along the coast.

Photographers rushed outside when circumhorizontal arcs lit up the late-afternoon sky, creating a painterly band of iridescent colors.

Geologists studied the formation of island arcs that stretch along the convergent plate boundary.

Stage technicians adjusted the carbon arcs to achieve the perfect intensity for the film shoot.

When the old switch failed, bright electric arcs jumped across the contacts, startling the technicians.

Weather photographers were thrilled when subhelic arcs appeared above the icy horizon during the rare halo display.

Scientists analyzed satellite data to track the development of several tropical arcs over the Pacific.

The medieval cathedral's arcs boutant cast long shadows across the cloister at sunset.