WILMINGTON, MA — Wilmington High School’s Strings, Chorus and Soundscape Acapella group, along with the 8th grade Chorus, held its Winter Concert on Thursday, December 6, 2018 in the Wilmington High School Auditorium.Wilmington Community Television was on hand to cover the concert. Watch it below:—Video Playerhttps://objects-us-east-1.dream.io/wilmington/f/2/7/9/1/8/f279182a-1fc2-417f-b8b7-ab3752a2a8121544205967.316%2B48988666.360%40castus4-wilmington%2B15442098141544208053979219.vod.720p.8th%20Grade-HS%20Chorus%2C%20Soundscape%2C%20HS%20Strings.mp4Media error: Format(s) not supported or source(s) not foundmejs.download-file: https://objects-us-east-1.dream.io/wilmington/f/2/7/9/1/8/f279182a-1fc2-417f-b8b7-ab3752a2a8121544205967.316%2B48988666.360%40castus4-wilmington%2B15442098141544208053979219.vod.720p.8th%20Grade-HS%20Chorus%2C%20Soundscape%2C%20HS%20Strings.mp4?_=100:0000:0000:00Use Up/Down Arrow keys to increase or decrease volume.—Like Wilmington Apple on Facebook. Follow Wilmington Apple on Twitter. Follow Wilmington Apple on Instagram. Subscribe to Wilmington Apple’s daily email newsletter HERE. Got a comment, question, photo, press release, or news tip? Email email@example.com.Thank You To Our Sponsor:Share this:TwitterFacebookLike this:Like Loading… RelatedVIDEO: Watch 2019 Wilmington Spring Chorus FestivalIn “Videos”VIDEO: Watch Concert with 7th & 8th Grade Strings & Chorus, WHS Chorus & SoundscapeIn “Videos”VIDEO: Watch 2018 Wilmington Spring Choral ConcertIn “Videos”
Russia and Iran have signed a contract for Moscow to supply Tehran with the long-overdue S-300 surface-to-air missile systems, said a top official of a Russian defence conglomerate on Monday.Sergei Chemezov, chief executive of Russian state-owned defence conglomerate Rostec, said Russia had agreed to finally deliver the long-overdue missile systems it had in 2007 committed to supply under an $800-million deal, reported Press TV citing Russian state-run RIA news agency.Moscow refused to deliver the systems to Tehran in 2010 on the pretext that the agreement was covered by the fourth round of the United Nations Security Council sanctions against Iran over its nuclear programme. The resolution bars sale of hi-tech weapons to Tehran.Following Moscow’s refusal to deliver the systems, Iran filed a complaint against the relevant Russian arms firm with the International Court of Arbitration in Geneva.In April this year, Russian President Vladimir Putin lifted a previous ban on the delivery of the S-300 to Iran.Iranian Defence Minister Brigadier General Hossein Dehqan said in mid-August “all changes” made to the S-300 system by the Russians over the years would be implemented on the equipment to be delivered to Iran.
A team of researchers at IBM has developed a new way to measure the magnetic field of individual atoms that offers 1000 times the energy resolution of conventional techniques. In their paper published in the journal Nature Nanotechnology, the team describes their approach, how well it works and their hope that they will be able to modify it in such a way as to allow others with less specialized hardware to use it. Explore further Journal information: Nature Nanotechnology Scientists are eager to better measure the magnetic fields of individual atoms because they believe it will lead to a better understanding of material and biological interactions—most particularly those involving weak magnetic interactions. Current methods rely on using defects in diamonds, though the team at IBM notes that prior work at their lab shows that it is possible to measure weak interactions in another way, an approach described as challenging. In this new effort, the team has come up with a way to get the job done that is relatively simple, though, they note, it requires special hardware.In the new approach, an atom called a sensor is placed near a target atom inside of a scanning tunneling microscope—a magnetic field is then applied to the microscope followed by a jolt of electricity to the tunnel junction. From there on, the frequency of the atom is monitored—when it matches the spin of the precess (the axis of rotation around a magnetic field that reflects its degree of magnetism), it reveals the measure of the magnetic field. The change in orientation is measured by moving the sensor atom to the microscope’s sensor tip.The researchers found their approach to be far more accurate and easier to read than other methods, pointing out that the signal they got from the technique was both stronger and more robust. They note also that few other labs likely have the combination of equipment (such as the high frequency cabling added to the microscope) required to replicate their technique, so they plan to continue the work in hopes of achieving the same results under more relaxed conditions. © 2017 Phys.org This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. Credit: CC0 Public Domain Citation: New microscope technique offers a better way to measure magnetic field of individual atoms (2017, March 7) retrieved 18 August 2019 from https://phys.org/news/2017-03-microscope-technique-magnetic-field-individual.html Ultrasensitive magnetometer proposed based on compass needle More information: Taeyoung Choi et al. Atomic-scale sensing of the magnetic dipolar field from single atoms, Nature Nanotechnology (2017). DOI: 10.1038/nnano.2017.18