18-18 Brazil 2018 Scientists: Cesar Lattes, Joanna Döbereiner, Atom, Science,Mnh

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Seller: Top-Rated Seller machadopoppe (4.555) 100%, Location: Sao Paulo, Sao Paulo, Ships to: Worldwide, Item: 303030155313 Condition: New (Unused) - Mint MNH Set - 2V The shipping option "Economy Shipping" is sending a letter without registration. The shipping option "Standard Shipping" is sending a registered letter. I'm not responsible for sending without registration. The risk is the buyer. ABOUT THE STAMPS: It is a se-tenant with two stamps interconnected by an element in common between the two scientists portrayed: an atom. In this case, the atom is nitrogen and was represented in a playful way as in the textbooks. The base colors of each stamp also seek to relate to the field of action of the two scientists. One of the great discoveries of César Lattes was the atomic particle Méson-Pi. Lattes studied the cosmic rays, setting up a laboratory on a mountain in the Andes and using photographic plates enhanced with boron. The stamp design seeks to illustrate these experiments. Finally, in the texture at the background of its image, some sketches were used, representing calculations and formulas. The agriculture engineer Johanna Döbereiner pioneered the study of soil biology and her studies had a great impact on Brazilian agricultural production. The illustration of the stamp demonstrates her main research: the relation between a plant and the bacteria fixing of nitrogen. As texture at the background of its image, vector illustrations of some leaves and legumes were used. The vector drawing technique was used. Estimated time to receive (in days): Locus Minimum Average Maximum America and Europa 10 20 45 Oceania 16 28 50 Africa 18 26 50 Asia - Japan 12 20 45 Asia - Russia 20 38 60 Asia - Others 15 31 60 Condition: Mint MNH, Modified Item: No, Country/Region of Manufacture: Brazil, Topic: Celebrities, Science, Year of Issue: 2018, Quality: Mint Never Hinged/MNH, Region: Brazil, Grade: XF/S (Extremely Fine/Superb), Type: Set complete

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