The telescope can resolve details as small as one minute of arc on the lunar surface.

The telescope resolved two stars separated by just one second of arc.

The astrologer calculated the planet's diurnal arc to determine how long it would influence the house between its rising and setting.

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

The engineer measured the circular arc to calculate the curvature of the pipe.

The referee asked the defenders to stay outside the penalty arc during the free kick.

The welder adjusted the carbon arc to maintain a stable bead along the seam.

The cathedral's ornate arc-boutant cast a dramatic shadow across the cloister at sunset.

The museum restored two vintage arc lamps that once lit the main exhibition hall.

When the small town faced corruption, she stepped forward like Joan of Arc, rallying the citizens and leading the charge.