{"id":27142,"date":"2025-01-06T20:33:03","date_gmt":"2025-01-07T01:33:03","guid":{"rendered":"http:\/\/blog.kenperlin.com\/?p=27142"},"modified":"2025-01-06T20:33:52","modified_gmt":"2025-01-07T01:33:52","slug":"noise-revisited-part-4","status":"publish","type":"post","link":"http:\/\/blog.kenperlin.com\/?p=27142","title":{"rendered":"Noise revisited, part 4"},"content":{"rendered":"

After yesterday’s big winter storm, this morning I awoke to find the windows covered in ice. I took some photos.<\/p>\n

Below left is a photo of one of the windows here. To its right is a close-up photo of the same window.<\/p>\n\n\n\n
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The reason for this texture is that ice has lower density than water. That is why ice floats.<\/p>\n

The colder water toward the outside of the window freezes first, and therefore expands faster. This makes the outside surface area increase, causing the surface to buckle.<\/p>\n

The result is a random bumpy topography. Because of the underlying physics, all of the bumps, although randomly placed, are about the same size.<\/p>\n

It is similar to the process — a gradual increase in surface area over time — which causes drying paint to develop a bumpy surface, with all of the bumps being about the same size. And this particular natural phenomenon was also my original inspiration for creating synthetic band-limited noise, all those years ago.<\/p>\n

For the last several days I have been writing posts about noise. So it seemed like a wonderful coincidence, when I woke up this morning, to see something like this.<\/p>\n

It was as though nature itself was sending me noise.<\/p>\n

Or maybe it was sending me a signal.<\/p>\n","protected":false},"excerpt":{"rendered":"

After yesterday’s big winter storm, this morning I awoke to find the windows covered in ice. I took some photos. Below left is a photo of one of the windows here. To its right is a close-up photo of the same window. The reason for this texture is that ice has lower density than water. … Continue reading “Noise revisited, part 4”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"http:\/\/blog.kenperlin.com\/index.php?rest_route=\/wp\/v2\/posts\/27142"}],"collection":[{"href":"http:\/\/blog.kenperlin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.kenperlin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.kenperlin.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.kenperlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=27142"}],"version-history":[{"count":4,"href":"http:\/\/blog.kenperlin.com\/index.php?rest_route=\/wp\/v2\/posts\/27142\/revisions"}],"predecessor-version":[{"id":27148,"href":"http:\/\/blog.kenperlin.com\/index.php?rest_route=\/wp\/v2\/posts\/27142\/revisions\/27148"}],"wp:attachment":[{"href":"http:\/\/blog.kenperlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=27142"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.kenperlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=27142"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.kenperlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=27142"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}