2013 Denmark 20 Kroner Niels Bohr ~ Atomic Theory : the Atomic Model Alum/Bronze

Description: 2013 Denmark 20 Kroner Niels Bohr ~ Atomic Theory : the Atomic Model Alum/Bronze Coin 2013 Denmark 20 Kroner (Niels Bohr) 20 Kroner - Margrethe II (Niels Bohr: Atomic model) 2013 Circulating commemorative coin: Danish Scientists – 100th Anniversary of Niels Bohrs Structure of the Atomic-Model Aluminium bronze • 9.3 g • ⌀ 27.0 mm KM# 956, Mintage: 268,000 Stock Photo ***RATHER LOW MINTAGE COIN AT 268,000 WORLDWIDE UNITS*** THE ABBREVIATED LIFE AND WORK OF NIELS BOHR Niels Henrik David Bohr (October 7, 1885 – November 18, 1962) was a Danish physicist who made foundational contributions to understanding atomic structure and quantum theory, for which he received the Nobel Prize in Physics in 1922. Bohr was also a philosopher and a promoter of scientific research. Bohr developed the Bohr model of the atom, in which he proposed that energy levels of electrons are discrete and that the electrons revolve in stable orbits around the atomic nucleus but can jump from one energy level (or orbit) to another. Although the Bohr model has been supplanted by other models, its underlying principles remain valid. He conceived the principle of complementarity: that items could be separately analyzed in terms of contradictory properties, like behaving as a wave or a stream of particles. The notion of complementarity dominated Bohr's thinking in both science and philosophy. Planetary models of atoms were not new, but Bohr's treatment was. Taking the 1912 paper by Darwin on the role of electrons in the interaction of alpha particles with a nucleus as his starting point, he advanced the theory of electrons traveling in orbits of quantized "stationary states" around the atom's nucleus in order to stabilize the atom, but it wasn't until his 1921 paper that he showed that the chemical properties of each element were largely determined by the number of electrons in the outer orbits of its atoms. He introduced the idea that an electron could drop from a higher-energy orbit to a lower one, in the process emitting a quantum of discrete energy. This became a basis for what is now known as the old quantum theory. Bohr received numerous honours and accolades. In addition to the Nobel Prize, he received the Hughes Medal in 1921, the Matteucci Medal in 1923, the Franklin Medal in 1926, the Copley Medal in 1938, the Order of the Elephant in 1947, the Atoms for Peace Award in 1957 and the Sonning Prize in 1961. He became foreign member of the Finnish Society of Sciences an Letters in 1922, and of the Royal Netherlands Academy of Arts and Sciences in 1923, an international member of the United States National Academy of Sciences in 1925,a member of the Royal Society in 1926, an international member of the American Philosophical Society in 1940, and an international honorary member of the American Academy of Arts and Sciences in 1945. The Bohr model's semicentennial was commemorated in Denmark on 21 November 1963 with a postage stamp depicting Bohr, the hydrogen atom and the formula for the difference of any two hydrogen energy levels: h ν = ϵ 2 − ϵ 1 Several other countries have also issued postage stamps depicting Bohr. In 1997, the Danish National Bank began circulating the 500-krone banknote with the portrait of Bohr smoking a pipe. On 7 October 2012, in celebration of Niels Bohr's 127th birthday, a Google Doodle depicting the Bohr model of the hydrogen atom appeared on Google's home page. An asteroid, 3948 Bohr, was named after him, as was the Bohr lunar crater and bohrium, the chemical element with atomic number 107. During the 1930s, Bohr helped refugees from Nazism. After Denmark was occupied by the Germans, he met with Heisenberg, who had become the head of the German nuclear weapon project. In September 1943 word reached Bohr that he was about to be arrested by the Germans, so he fled to Sweden. From there, he was flown to Britain, where he joined the British Tube Alloys nuclear weapons project, and was part of the British mission to the Manhattan Project. After the war, Bohr called for international cooperation on nuclear energy. He was involved with the establishment of CERN and the Research Establishment Risø of the Danish Atomic Energy Commission and became the first chairman of the Nordic Institute for Theoretical Physics in 1957. AND IF YOU DON'T UNDERSTAND THIS, YOUR ON THE RIGHT TRACK 2013 Denmark 20 Kroner (Niels Bohr) 20 Kroner - Margrethe II (100th Anniversary of Niels Bohrs Structure of Atoms-Model) 2013 Commemorative issue 100th Anniversary of Niels Bohrs Structure of Atoms-Model Series: Danish Scientists Obverse Portrait of Queen Margrethe II Script: Latin Lettering: MARGRETHE II (heart) DANMARKS DRONNING 2013 Engraver: Lis Nogel Reverse Electron around nucleus 1913 Script: Latin Lettering: NIELS BOHR . NIELS BOHR . ATOMTEORI 1913 20 KRONER Engraver: Den Kgl. Mønts designteam Edge Segmented reeding Mint Royal Danish Mint (Den Kongelige Mønt), Copenhagen, Denmark (1739-date) ***RATHER LOW MINTAGE COIN AT 268,000 WORLDWIDE UNITS*** FIN ~~~~~~~~~~~~~~ SEARCH WITH EYES WIDE OPEN I Do Combine Shipping, If you don't get combined shipping at checkout, contact me immediately, or buy and, trust me, you WILL be refunded. Your shipping charge for everything you buy from 1 item to 30 items should amount to $4.70 (Unless otherwise stated). ANOTHER CLASSIC BEAUTY FROM ~~~FINNOSIANE’S COINS AND COLLECTIBLES,~~~ >>TRUTH” >> VIRTUE >> ENDURANCE >> LUCK >> STRENGTH One Small Man on a Mission!!! BROWSE, BID, BUY, BANTER !!!! !!~~~~~~~~~~~~~~~~~~~~~~~!! The price includes the item, safe and secure packaging materials, postage and/or extra postage due to packaging, and other costs associated with the safe secure shipping and sale of your item, and a very small premium for me: with the promise that you will not be disappointed in your item(s). ----Browse, Bid, Buy, and Banter---- THAT'S MY MOTTO!!! ALL ARE WELCOME ANYTIME!!! PLEASE ENJOY YOUR TIME IN MY STORE!!! I LIKE TO TRY AND KEEP A UNIQUE AND ECLECTIC SELECTION OF COINS, EXONUMIA, AND MISCELLANY AVAILABLE TO YOU FOR SALE. I SEARCH FOR COINS OF INTEREST BY GOING TO A VARIETY OF PLACES, COIN-N-MEDAL SHOWS, FLEA MARKETS, YARD SALES, ETC. SEARCHING FOR DIFFERENT COINS OR OTHER UNIQUE ITEMS OF NUMISMATIC INTEREST. MY PRICES ARE NOT ALWAYS THE CHEAPEST, BUT CERTAINLY NOT THE HIGHEST EITHER, AND OFFERS ARE ALWAYS WELCOME. IF I CAN ACCOMMODATE YOU, I WILL!!! PRICES ARE BASED ON SIMILAR COINS, RARITY, GRADE, AND WHAT I PAID!!! I HOPE I CAN CONTINUE TO LIVE UP TO, or EXCEED YOUR EXPECTATIONS, AND THAT YOU WILL RETURN NOW AND AGAIN TO SEE WHATS NEW, OR JUST SAY, “HI!!!” THANK YOU FOR SUPPORTING SMALL INDEPENDENT SELLERS ON EBAY,. THOSE OF US WHO COMPETE WITH THE STORES AND OTHER LARGE COMPANIES THAT ALSO USE THIS PLATFORM. HOPEFULLY, YOUR SUPPORT WILL CONTINUE TO ALLOW SMALL INDEPENDENT SELLERS, SUCH AS MYSELF, YOU, AND/OR YOUR FRIENDS, OR OTHERS, WHO JUST WANT TO CONTROL THEIR OWN 'STORE' FOR FUN, FOR A CAREER, OR JUST TO SUPPORT THEIR HOBBIES'. HOPEFULLY, EBAY, AND OTHER LARGER SELLERS, WITH MORE RESOURCES, WON'T SQUEEZE OUT THE SMALL INDEPENDENT SELLERS, A REAL LIFE CONDITION THAT SEEMS TO HAPPEN WAY TOO OFTEN. THANK YOU VERY, VERY MUCH FOR YOUR SUPPORT. I CAN'T DO IT WITHOUT YOU!!! With Sincerity, Brian (finnosiane) I AIM TO BE TRUSTED AND HONEST ALWAYS. IF YOU HAVE A PROBLEM, LET'S WORK IT OUT!!! PLEASE LEAVE FEEDBACK IF I HAVE SATISFIED MY OBLIGATION IN A POSITIVE MANNER, AND IF THERE IS SOMETHING YOU FEEL I HAVE DONE WRONG, OR WANT TO COMMENT ON SO I CAN IMPROVE, TALK TO ME FIRST, I'M FAIRLY EASY TO GET ALONG WITH :). I AM SOLUTION ORIENTED!!! My coins, books, and miscellany are sold as-is, as I would expect to receive them. To be clear the buyer will receive the exact item shown in the pictures (unless otherwise stated). Please view the photos for specific condition, details, and/or concerns. The pictures will always take precedence over written word; or mistakes I might make in the listings. What is seen in the pictures is what you will receive. Please feel free to ask questions or for additional photos. Bargain Basement Items are non-returnable, some are perfect some are severely compromised, luck of the draw. Payments are expected within a reasonable amount of time, if you need more time, I am willing to work with you, just message me as soon as you can to make arrangements. I am always receptive to customers who want to take advantage of combined shipping, from auctions to 'Buy it Now's. Please Browse and remember my motto: !!! Browse, Bid, Buy, and Banter !!! I am receptive to all of them. BRIAN Returned items must be in the original condition. Return shipping, tracking number, and return reason must be provided to ensure I can improve; provide a better service for you and other buyers. I will issue a full refund upon receipt of the item in its original condition and complete packaging. The refund will be provided on the price paid for the item, not based on market value at the time. I, really, really take my reputation seriously. If you are dissatisfied with your order, please contact me and I will work with you to resolve your problem to your satisfaction. If you are satisfied with your order, kindly leave feedback. I will return in kind. Please do not leave Neutral or Negative Feedback without first addressing your issues with me. We can always find a good solution to any issue. I am Solution Oriented. Again Thank you Very, Very much for your interest and support I HOPE YOUR DAY IS A HAPPY DAY!!!! AND THANK YOU FOR YOUR INTEREST!!! -Brian <<<>>> ~~~~~1. For many major markets. Average number of days based on origin and destination. 2. Exceptions apply. For details, visit the Domestic Mail Manual. 3. Insurance coverage is provided against loss, damage, or missing contents and is limited to a maximum liability of $100 when then the pieces bear an Intelligent Mail barcode (IMpb) or USPS retail tracking barcode and the mailer pays retail or commercial prices. 4. In most cases, the expected delivery date printed on your receipt or provided at checkout will reflect a delivery time of 1, 2, or 3 business days and is based on origin, destination, and drop-off time. The expected delivery date does not come with a money-back guarantee. 5. For mailable items up to 70 lbs. Expected delivery in 2–5 business days. Packages going to certain places (including Alaska, Hawaii, and offshore destinations), or containing hazardous materials or live animals may receive slower service. 6. Not eligible for online shipping with Click-N-Ship or PC Postage third-party vendors. 7. The timeliness of service to or from destinations outside the contiguous U.S. may be affected by the limited availability of transportation ~~~~~ Small Items under $20 will be Shipped with Ebay Standard Envelope for Trading Cards, Stamps, Postcards, and Coins (3-6 business days), or USPS Ground Advantage, Flat Rate Padded Envelopes, Flat Rate Boxes, Media Mail, or Signature requests (extra fee)... V&M Prod.

Price: 37 USD

Location: Niles, Illinois

End Time: 2024-12-17T11:52:16.000Z

Shipping Cost: 4.7 USD