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Record data

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  "cid": "bafyreiavewxpzmddto7tkpwatys45p2mqn555vyyzkhx7dqu6kxnnfz7ra",
  "value": {
    "text": "Different types of glass have to be compatible to be fused together in the same piece. You can see in the first image how the glass has cracked; in the second, the white halos show how much tension is still in the uncracked half. #glass #science #polarized #COE #tension #art #craft #steAm",
    "$type": "app.bsky.feed.post",
    "embed": {
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      "images": [
        {
          "alt": "On a white background sits a rectangular-ish piece of clear glass with blobs of purple glass melted into it. The piece has cracked in half, and around the purple glass on the left side.",
          "image": {
            "$type": "blob",
            "ref": {
              "$link": "bafkreibuyj7swohm73munthj4uozzat6p2ikzopy7ss5gbo2hhvtwsbfhm"
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            "mimeType": "image/jpeg",
            "size": 370858
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          "aspectRatio": {
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            "height": 1346
          }
        },
        {
          "alt": "The same piece of rectangular-ish glass sits on a square polarized filter, both on top of a lit-up light pad. When a second polarized filter is placed over the camera lense and rotated until the first filter turns black, tension in the glass shows up as white halos. The right side of the piece has bright white halos surrounding the purple glass. The left side also has halos, but they are much dimmer and end abruptly at the crack around the purple glass; breaking the glass relieves the tension. ",
          "image": {
            "$type": "blob",
            "ref": {
              "$link": "bafkreicp7uxjfhtuqqdiljjzvo2kw2qnaavr2p2llqz6rdy4d5eorrjfyy"
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            "mimeType": "image/jpeg",
            "size": 589299
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          "aspectRatio": {
            "width": 2000,
            "height": 1932
          }
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    "langs": [
      "en"
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        "features": [
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        "features": [
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        "index": {
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        "features": [
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        "index": {
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        "features": [
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        "features": [
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            "tag": "craft",
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        "features": [
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            "tag": "steAm",
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        ]
      }
    ],
    "createdAt": "2025-03-13T22:21:57.856Z"
  }
}