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Rectangular iceberg discovered by NASA in Antarctica.NASA
NASA has released new photos of the rectangular iceberg with unnatural appearance, showing the full extent of the leaf-shaped cake.
NASA's Jeremy Harbeck had not intended to photograph the rectangular iceberg while he was flying over the Larsen C ice platform. iceberg from above, Harbeck added that he "thought that this rectangular iceberg was visually interesting and quite photogenic, so on a lark, I (he) just took some pictures".
The overflight overflight was part of NASA's IceBridge operation, a continuing assessment of changes to the Antarctic ice shelves. Jefferson Beck, of NASA, noted that the rectangular iceberg had been captured approximately at these coordinates 66 ° 52 "45.5" S 59 ° 52 "55.2" W on 16 October.
Approximate location where the rectangular icebergs were photographed.NASA
After an unexpected interest in the rectangular shaped iceberg, NASA has released several other images showing the full extent of the iceberg. While the initial photo below was simply shared on Twitter, NASA then added other images in a press release.
D & # 39; yesterday #IceBridge flight: a tabular iceberg sits to the right, floating among the sea ice just off the Larsen ice floe C. The acute angles and the flat surface of the iceberg indicate that it was probably recently calved from the ice. pic.twitter.com/XhgTrf642Z
– ICE NASA (@NASA_ICE) October 17, 2018
True, the initial picture does not show much of the iceberg and we now have a full view of the iceberg. It is now clear that the iceberg is certainly not a perfect rectangle, but rather looks like a form of leaf cake.
Tabular icebergs are known for their very angular edges and flat top. Although the sides of tabular icebergs are usually vertical, it is unusual to find an iceberg whose four corners are so close to 90 degrees.
Another rectangular iceberg view photographed by NASA scientists.NASA
Does nature create perfect angles?
Although the rectangular iceberg may seem unnatural, nature often produces perfect angles. A good example is minerals, which can grow and break at extremely precise angles.
A good example is calcite (calcium carbonate), which has perfect rhombohedral cleavage. The calcite has a perfect cleavage in three directions with an angle of 74 degrees. This is due to the specific crystalline lattice of calcite, which creates weak planes that tend to cleave or break at 74 degrees.
Perfect calcite cleavageWikicommons
Another mineral famous for its perfect 90 degree edges is pyrite (the gold of the madman). You will sometimes notice that pyrite has a perfectly cubic shape, as shown in the figure below.
PyriteWikicommons
Although pyrite is not required to take this form, it can be cubic if there is a certain concentration of iron sulfur and the temperature and pressures are ideal. When this happens, the crystalline pyrite lattice appears, similar to the figure below, producing nearly perfect pyrite cubes.
The crystal lattice of pyrite.https://www.mdpi.com/2073-4352/4/3/390
Thus, although the rectangular-shaped iceberg discovered by NASA may seem strange at first glance, it is clear that nature can produce perfect angles. In this case, nature will eventually round the sharp angles by wind and waves. Meanwhile, however, it is a spectacular example of the unique nature of nature.
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Rectangular iceberg discovered by NASA in Antarctica.NASA
NASA has released new photos of the rectangular iceberg with unnatural appearance, showing the full extent of the leaf-shaped cake.
NASA's Jeremy Harbeck had not intended to photograph the rectangular iceberg while he was flying over the Larsen C ice platform. iceberg from above, Harbeck added that he "thought that this rectangular iceberg was visually interesting and quite photogenic, so on a lark, I (he) just took some pictures".
The overflight overflight was part of NASA's IceBridge operation, a continuing assessment of changes to the Antarctic ice shelves. Jefferson Beck, of NASA, noted that the rectangular iceberg had been captured approximately at these coordinates 66 ° 52 "45.5" S 59 ° 52 "55.2" W on 16 October.
Approximate location where the rectangular icebergs were photographed.NASA
After an unexpected interest in the rectangular shaped iceberg, NASA has released several other images showing the full extent of the iceberg. While the initial photo below was simply shared on Twitter, NASA then added other images in a press release.
D & # 39; yesterday #IceBridge flight: a tabular iceberg sits to the right, floating among the sea ice just off the Larsen ice floe C. The acute angles and the flat surface of the iceberg indicate that it was probably recently calved from the ice. pic.twitter.com/XhgTrf642Z
– ICE NASA (@NASA_ICE) October 17, 2018
True, the initial picture does not show much of the iceberg and we now have a full view of the iceberg. It is now clear that the iceberg is certainly not a perfect rectangle, but rather looks like a form of leaf cake.
Tabular icebergs are known for their very angular edges and flat top. Although the sides of tabular icebergs are usually vertical, it is unusual to find an iceberg whose four corners are so close to 90 degrees.
Another rectangular iceberg view photographed by NASA scientists.NASA
Does nature create perfect angles?
Although the rectangular iceberg may seem unnatural, nature often produces perfect angles. A good example is minerals, which can grow and break at extremely precise angles.
A good example is calcite (calcium carbonate), which has perfect rhombohedral cleavage. The calcite has a perfect cleavage in three directions with an angle of 74 degrees. This is due to the specific crystalline lattice of calcite, which creates weak planes that tend to cleave or break at 74 degrees.
Perfect calcite cleavageWikicommons
Another mineral famous for its perfect 90 degree edges is pyrite (the gold of the madman). You will sometimes notice that pyrite has a perfectly cubic shape, as shown in the figure below.
Although pyrite is not required to take this form, it can be cubic if there is a certain concentration of iron sulfur and the temperature and pressures are ideal. When this happens, the crystalline pyrite lattice appears, similar to the figure below, producing nearly perfect pyrite cubes.
The crystal lattice of pyrite.https://www.mdpi.com/2073-4352/4/3/390
Thus, although the rectangular-shaped iceberg found by NASA may seem strange at first, it is clear that nature can produce perfect angles. In this case, nature will eventually round the sharp angles by wind and waves. Meanwhile, however, it is a spectacular example of the unique nature of nature.
