cavities

The terrain appears completely untouched by man, but a closer look reveals dozens of cavities pocked across the rolling hills.

By trapping individual bacteria in micro-engineered circular cavities and coupling these cavities through narrow channels, the team observed coordinated bacterial motion.

These cavities in the earth trap time, preserving unique, delicate ecosystems for centuries.

Regular visits to the dentist to fill cavities used to be a shared ordeal for millions of American children and adults.

So, covering a broad range of frequencies and axion masses might still require a series of cavities.