ActivityPub Viewer

A small tool to view real-world ActivityPub objects as JSON! Enter a URL or username from Mastodon or a similar service below, and we'll send a request with the right Accept header to the server to view the underlying object.

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{ "@context": [ "https://www.w3.org/ns/activitystreams", { "ostatus": "http://ostatus.org#", "atomUri": "ostatus:atomUri", "inReplyToAtomUri": "ostatus:inReplyToAtomUri", "conversation": "ostatus:conversation", "sensitive": "as:sensitive", "toot": "http://joinmastodon.org/ns#", "votersCount": "toot:votersCount" } ], "id": "https://mathstodon.xyz/users/gregeganSF/statuses/109271295120138652", "type": "Note", "summary": null, "inReplyTo": "https://mathstodon.xyz/users/gregeganSF/statuses/109271290912908283", "published": "2022-11-02T00:07:22Z", "url": "https://mathstodon.xyz/@gregeganSF/109271295120138652", "attributedTo": "https://mathstodon.xyz/users/gregeganSF", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://mathstodon.xyz/users/gregeganSF/followers" ], "sensitive": false, "atomUri": "https://mathstodon.xyz/users/gregeganSF/statuses/109271295120138652", "inReplyToAtomUri": "https://mathstodon.xyz/users/gregeganSF/statuses/109271290912908283", "conversation": "tag:mathstodon.xyz,2022-11-02:objectId=28211198:objectType=Conversation", "content": "<p>Quantum measurements are necessarily “contextual”.</p><p>However, there is a twist! The fact that quantum measurements behave this way means that if we give entangled quantum particles to two players and challenge them to tell us numbers like this — for one row and column each, at a time — they can use Mermin’s grid to agree on the overlapping square 100% of the time.</p><p>More: <a href=\"https://www.gregegan.net/SCIENCE/MPMS/MPMS.html\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">gregegan.net/SCIENCE/MPMS/MPMS</span><span class=\"invisible\">.html</span></a></p><p><a href=\"https://www.scientificamerican.com/article/researchers-use-quantum-telepathy-to-win-an-impossible-game/\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">scientificamerican.com/article</span><span class=\"invisible\">/researchers-use-quantum-telepathy-to-win-an-impossible-game/</span></a></p>", "contentMap": { "en": "<p>Quantum measurements are necessarily “contextual”.</p><p>However, there is a twist! The fact that quantum measurements behave this way means that if we give entangled quantum particles to two players and challenge them to tell us numbers like this — for one row and column each, at a time — they can use Mermin’s grid to agree on the overlapping square 100% of the time.</p><p>More: <a href=\"https://www.gregegan.net/SCIENCE/MPMS/MPMS.html\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">gregegan.net/SCIENCE/MPMS/MPMS</span><span class=\"invisible\">.html</span></a></p><p><a href=\"https://www.scientificamerican.com/article/researchers-use-quantum-telepathy-to-win-an-impossible-game/\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" translate=\"no\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">scientificamerican.com/article</span><span class=\"invisible\">/researchers-use-quantum-telepathy-to-win-an-impossible-game/</span></a></p>" }, "attachment": [], "tag": [], "replies": { "id": "https://mathstodon.xyz/users/gregeganSF/statuses/109271295120138652/replies", "type": "Collection", "first": { "type": "CollectionPage", "next": "https://mathstodon.xyz/users/gregeganSF/statuses/109271295120138652/replies?min_id=109283584820105620&page=true", "partOf": "https://mathstodon.xyz/users/gregeganSF/statuses/109271295120138652/replies", "items": [ "https://mathstodon.xyz/users/gregeganSF/statuses/109283584820105620" ] } }, "likes": { "id": "https://mathstodon.xyz/users/gregeganSF/statuses/109271295120138652/likes", "type": "Collection", "totalItems": 4 }, "shares": { "id": "https://mathstodon.xyz/users/gregeganSF/statuses/109271295120138652/shares", "type": "Collection", "totalItems": 1 } }