Welcome!

Benvenuti in queste pagine dedicate a scienza, storia ed arte. Amelia Carolina Sparavigna, Torino

Saturday, February 23, 2019

Storia Ribelle Libri: Roberto Gremmo: Le grandi pietre magiche

Storia Ribelle Libri: Roberto Gremmo: Le grandi pietre magiche: Roberto Gremmo Le Grandi Pietre Magiche Residui di paganesimo nella religiosità popolare alpina Indice dei Capitoli: Nelle val...

Un commento: Il paganesimo di cui si parla non è quello romano. Il Piemonte è stato "romanizzato" a partire dal primo secolo a.C. Ma la romanizzazione non ha cancellato gli antichi rituali.

Textile Floor: Yarn Manufacturing Technology

Textile Floor: Yarn Manufacturing Technology: 1.     What is the first process/ machine in yarn production? Ans. Blow room. 2.     What is the second process/ machine in yarn prod...

Textile Floor: Defects of Knit Fabric

Textile Floor: Defects of Knit Fabric: Here are some faults or defects of knit fabric:   1.       Drop Stitches 2.       Pin hole 3.       Grease stain 4.      ...

Friday, February 22, 2019

FRATE LUPO, Il ritorno, di Luca Reteuna

"Prendi l’anima della luna, prendi l’essenza di una voce, falle vorticare nelle caverne dello spazio,
per creare l’ululato lamentoso del lupo.
Gli occhi dorati profondi, che guardano fisso attraverso il buio per scoprire i segreti della notte,
distolgono lo sguardo dall’uomo spaventato."
Emily Ham (9 anni, Cwmdu School, Powys, UK)


Tuesday, February 19, 2019

Monday, February 18, 2019

a Martian mystery

A remote Curiosity rover hack just helped crack a Martian mystery
Curiosity was sent to the Red Planet to search for life. Until researchers on Earth tweaked its innards and made it detect whiskers of Martian gravity.
By ROBIN ANDREWS

"While one Martian rover, Opportunity, has died, its younger cousin Curiosity has just solved a mystery. It measured tiny changes in the Red Planet’s gravity, allowing its mission team back home at NASA to understand how a huge, 3.4-mile high mountain the rover is exploring, had formed. ... "

Tuesday, February 12, 2019

Monday, February 11, 2019

Spins and Dominos

Physicists Found a Brand-New Kind of Magnet Hiding in a Uranium Compound
https://www.livescience.com/64729-new-uranium-singlet-magnet.html

"Under normal circumstances, the magnetic moments in a bar of iron become aligned gradually, without sharp transitions between magnetized and unmagnetized states. In a singlet-based magnet, the jump between states is sharper. Spin excitons, usually temporary objects, become stable when they cluster together. And when those clusters form, they start a cascade. Like dominoes falling into place, spin excitons fill the entire substance very quickly and suddenly, and align with one another.
That's what seems to be happening in USb2."