Arkivism
Microgravity
Public domain

Microgravity

NASA / MSFC · 2000-07-01 · photograph (digital archive)

From the collection of NASA Image and Video Library. Free to download, adapt and use — no permission needed.

About this work

What appear to be boulders fresh from a tumble down a mountain are really grains of Ottawa sand, a standard material used in civil engineering tests and also used in the Mechanics of Granular Materials (MGM) experiment. The craggy surface shows how sand grans have faces that can cause friction as they roll and slide against each other, or even causing sticking and form small voids between grains.

NASA Image and Video Library’s own description
Subjects
Ottawa sandMechanics of Granular MaterialsMGMearthquake
Credit lineMicrogravity. NASA/MSFC, 2000-07-01. Public domain. ID: 0003831.
Open in Explore View at source

Similar works

MicrogravityMicrogravity Pulvinulina arca var. contusa Cushman, 1926Pulvinulina arca var. contusa Cushman, 1926 Agrenocythere antiquata Benson, 1972Agrenocythere antiquata Benson, 1972 Globotruncana (Globotruncana) subspinosa Pessagno, 1960Globotruncana (Globotruncana) subspinosa Pessagno, 1960 Globigerina almadenensis Cushman & Todd, 1948Globigerina almadenensis Cushman & Todd, 1948 Globotruncana linneiana (d'Orbigny, 1839)Globotruncana linneiana (d'Orbigny, 1839)