Pagina principal - Wikimedia Commons

Wikimedia Commons

Imagine del die

Interrupted Reading by French artist Jean-Baptiste-Camille Corot. Today is World Book Day.

^{+/− (ia), +/− (en)}

Objecto multimedial del die

Preparation of amorphous silicon (1) and magnesium silicide (2), upon reduction of powdered sand with magnesium powder:

   (1) SiO2(s) + 2Mg(s) = Si(s) + 2MgO(s); and
   (2) 2Mg(s) + Si(s) = Mg2Si(s).

The reaction described by (1) is initiated by heating; then it is self-sustained and is highly exoenergetic.

^{+/− (ia), +/− (en)}

Participation

Pro percurrer: Usa le quadro de recerca al initio de iste pagina o le ligamines al dextra. Abona te a nostre fluxos syndicate.
Pro usar: Pro satisfacer le requisitos de licentia libere, lege nostre guida de reuso. Tu pote etiam requestar un imagine.
Pro identificar: Percurre le objectos non identificate. Si tu trova un cosa que tu pote identificar, scribe un nota sur le pagina de discussion del objecto.
Pro crear: Discoperi tote lo que tu debe saper in nostre guida Contribuer tu proprie obra.
e plus!

Discussion?: See the list of discussion pages.; Pro explorar altere manieras de contribuer a iste projecto, consulta le portal del communitate.

Defia photographic mensual

Ingagia nostre defia thematic mensual: prende alcun photos e incarga los! Lassa te inspirar e proba nove themas! Lege plus sur le defias!

Highlights

If you are browsing Commons for the first time, you may want to start with Featured pictures, Quality images, Valued images or Featured media.

You can also see some work created by our highly skilled contributors in Meet our photographers and Meet our illustrators. You may also be interested in Picture of the Year.