This has allowed scientists to retrieve information about the Arctic Ocean region's gravity field, its surface circulation, and the thickness of its sea-ice cover.

BBC: Cryosat spots Arctic sea-ice loss in autumn

In addition to mastery of traditional calligraphy, the art of engraving requires a high degree of virtuosity, since the artist works on a tiny surface area where every curve, every thickness of line counts.

UNESCO: Culture

Starting with two silicon wafers, Soitec machines coat the surface of one with silicon dioxide insulator and embed inside it a thin fault line of hydrogen atoms anywhere from 100 to 20, 000 nanometers below the surface, depending on customers' desired wafer thickness.

FORBES: Magazine Article

Sporting a brushed stainless steel surface, and with a record-breaking slim profile of only 8.9mm thickness, the HE720 demonstrates once again the company's consistently strong ability to combine top performance with style.

ENGADGET: ADATA's got an 8.9mm thick portable USB 3.0 drive, limbos under the competition by .1 of a millimeter

The irregular distribution and thickness of tephra provoked differential ablation, and tephra remobilization processes took place on the glacier surface.

UNESCO: Dublin Core

Satellites have long been used to track ice extent (area), but calculating the thickness of the marine floes requires the overflying spacecraft to gauge the difference between the top of the ice surface and the top of the water - a relatively simple calculation then gives the overall volume.

BBC: Launch success for Esa's Cryosat-2 ice mission