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Rest in Peace
Canada
6750 Posts |
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Pillar Of The Community
7838 Posts |
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"Technical Progress:" Cross section of a pressure vessel in an atomic power plant, designed by Czech artist Karel Vodák (1923-2000), combined engraved by Ladislav Jirka and photogravure, and issued by Czechoslovakia on April 10, 1967 as one of a set of six stamps publicizing the Expo 67, held in Montreal, Canada, Scott No. 1464. - nethryk  |
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Valued Member
United States
59 Posts |
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Valued Member
United States
59 Posts |
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Rest in Peace
Canada
6750 Posts |
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I like all the castellations and triangle shapes extant indeed.
That Sweedish stamp has always intrigues me.
Thank you for the fashion lesson as well. |
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Valued Member
United States
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Is there a way to subscribe to this thread?
Whoops, just now found it. Appears you have to do it at the time you reply to a thread. But what if you want to follow (subscribe) to a thread and NOT comment, is there a way to do that? |
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Rest in Peace
Canada
6750 Posts |
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Quote:
But what if you want to follow (subscribe) to a thread and NOT comment, is there a way to do that? Yes, The link at top or bottom of the thread that says Topic Subscription. |
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Pillar Of The Community
Germany
3028 Posts |
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Bedrock Of The Community
United States
28576 Posts |
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Austria The 10th Austria International Congress of Mathematics Innsbruck September 14, 1981 The design features Impossible Dice Construction by M.C. Escher (1898-1972)  |
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Bedrock Of The Community
United States
28576 Posts |
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Netherlands Child Welfare - Cubes November 10, 1970 Hexagons as cubes  |
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| Edited by KuoLC5310 - 12/15/2015 7:21 pm |
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Bedrock Of The Community
United States
28576 Posts |
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Netherlands Social Welfare Funds semipostal stamps April 7, 1970 The designs show a variety of geometric forms based on mathematical computation.  |
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Bedrock Of The Community
United States
28576 Posts |
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Canada Earth Sciences August 2, 1972 One of the four designs show cartography with map grids and stylized topographic contours.  |
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Pillar Of The Community
Germany
3028 Posts |
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Another design from Austria. (If you look at it from a distance, you'll see what it's supposed to be; just as the Columbus design made of raindrops "12/5/2010" is at first a ?.)  |
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Bedrock Of The Community
United States
28576 Posts |
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FRG (Germany) Science and Technology January 12, 1968 The stamp with the theme of mining shows the crystal structure models of sphalerite (ZnS) and galena (PbS).  |
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| Edited by KuoLC5310 - 01/30/2016 6:44 pm |
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Bedrock Of The Community
United States
28576 Posts |
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Netherlands Business - Typographic grids May 24, 2005 Self-adhesive stamps. The designs show €0.39 and €0.78 in dot matrix. According to the designer Martijn Sandberg, the round dots are related to the perforation which is the most unique property of a stamp. The red-copper and nickel colors of the euro coins reinforce the commercial aspect of these stamps  |
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Replies: 242 / Views: 40,811 |
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Posted 07/31/2012 08:02 am
