Latest Breaking News On - Dan schechtman - Page 1 : vimarsana.com

1. The Second Kind of Impossible & 2. Start of our Solar System

Presented by the Lyceum Society To register for this event, please contact customerservice@nyas.org Welcome and Introductions: 11:30 am to 11:45 am Initial Presentation: 11:45 am to 12:45 pm Speaker: Fred Cadieu Topic: Start of our Solar System: Earth Biased Illusions Everybody has some innate feelings about the start of Earth. Today we want to maybe expand those

Israel renews its scientific association with the ESRF

Grapevine October 9, 2022: A different Balfour Day celebration

Movers and shakers in Israeli society.

Grapevine October 9, 2022: A different Balfour Day celebration

Movers and shakers in Israeli society.

Geometrically baffling 'quasicrystals' found in the debris of the first-ever nuclear blast

Nuclear detonations unleash an astonishing amount of destructive force. But the extreme pressure and temperature that they generate also makes nuclear blasts a cauldron of chemical creation, capable of delivering new and surprising scientific discoveries. In the 1950s, for instance, scientists examining debris from US hydrogen bomb tests found two new elements, which now occupy numbers 99 and 100 in the periodic table. They named them after prominent nuclear scientists: einsteinium for Albert Einstein, and fermium for Enrico Fermi. Now, scientists sifting through debris at the site of the first-ever nuclear bomb detonation – held in New Mexico in July 1945 and named the Trinity test – have unearthed a different chemical oddity. In their paper, the researchers report the discovery of a previously unknown type of “quasicrystal” – a crystal formation once thought impossible due to its irregular geometric structure.

Oldest human-made quasicrystal discovered in remains of first nuclear blast

By Kit Chapman2021-05-17T19:02:00+01:00 Scientists have found what might be the oldest synthetic quasicrystal in the debris of the first-ever atomic bomb test almost 76 years ago. The report brings together two of the strangest phenomena in chemistry. On 16 July 1945, the Trinity test became the first nuclear detonation, carried out in the New Mexico desert as part of the Manhattan Project during the second world war. In the resulting explosion, particles of silicate-based desert sand were sucked up into the blast’s fireball, before raining down as a glassy mineral called trinitite. These fragments are usually green, but occasionally red trinitite is also found, created from where the sand fused with copper oxide from the test’s recording equipment. The exact conditions that led to the formation of trinitite are still unknown, and it remains a crime to remove the rocks from the desert.

Using sound waves to make patterns that never repeat

Credit: Courtesy of Fernando Guevara Vasquez Mathematicians and engineers at the University of Utah have teamed up to show how ultrasound waves can organize carbon particles in water into a sort of pattern that never repeats. The results, they say, could result in materials called "quasicrystals" with custom magnetic or electrical properties. The research is published in "Quasicrystals are interesting to study because they have properties that crystals do not have," says Fernando Guevara Vasquez, associate professor of mathematics. "They have been shown to be stiffer than similar periodic or disordered materials. They can also conduct electricity, or scatter waves in ways that are different from crystals."

Solving a 140-Year-Old Riddle