{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:2IGKBKO5WYHGWKN5BHKISJY33K","short_pith_number":"pith:2IGKBKO5","canonical_record":{"source":{"id":"1510.06850","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-10-23T08:00:41Z","cross_cats_sorted":[],"title_canon_sha256":"0887f2fd0ff1ff172b28c45aa67e0e44c7994c6cf29ce27487d27ac04b18956e","abstract_canon_sha256":"7c49e40c8f178a2b5be02a4b7dfa5b477ca8938ee6c46a6af87982d7a7273bcd"},"schema_version":"1.0"},"canonical_sha256":"d20ca0a9ddb60e6b29bd09d489271bdab51b9953cdff3b39f8b3fd139894a03a","source":{"kind":"arxiv","id":"1510.06850","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.06850","created_at":"2026-05-18T01:29:22Z"},{"alias_kind":"arxiv_version","alias_value":"1510.06850v1","created_at":"2026-05-18T01:29:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.06850","created_at":"2026-05-18T01:29:22Z"},{"alias_kind":"pith_short_12","alias_value":"2IGKBKO5WYHG","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"2IGKBKO5WYHGWKN5","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"2IGKBKO5","created_at":"2026-05-18T12:28:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:2IGKBKO5WYHGWKN5BHKISJY33K","target":"record","payload":{"canonical_record":{"source":{"id":"1510.06850","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-10-23T08:00:41Z","cross_cats_sorted":[],"title_canon_sha256":"0887f2fd0ff1ff172b28c45aa67e0e44c7994c6cf29ce27487d27ac04b18956e","abstract_canon_sha256":"7c49e40c8f178a2b5be02a4b7dfa5b477ca8938ee6c46a6af87982d7a7273bcd"},"schema_version":"1.0"},"canonical_sha256":"d20ca0a9ddb60e6b29bd09d489271bdab51b9953cdff3b39f8b3fd139894a03a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:29:22.918967Z","signature_b64":"XBPpOq4IFUY4L1PCBnhIo4C+/jdeErfp5Wdyj6AubPMDQ+ryWGw1avLu7vQmVhMyC7cs4mRpRML0WRmxyf0zCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d20ca0a9ddb60e6b29bd09d489271bdab51b9953cdff3b39f8b3fd139894a03a","last_reissued_at":"2026-05-18T01:29:22.918202Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:29:22.918202Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.06850","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:29:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NLdNKyu89d+skLezxcxYqdG6gKADznRClMKnr0SNad79pDojMfq0oXIrO6dbHJliTk2mJM2l6HwtNSggNm9QDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T20:57:34.107463Z"},"content_sha256":"b5fd908bfee37ef049c0a872e55f0a0c7dc435bac22a0725895d1b115c0769b1","schema_version":"1.0","event_id":"sha256:b5fd908bfee37ef049c0a872e55f0a0c7dc435bac22a0725895d1b115c0769b1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:2IGKBKO5WYHGWKN5BHKISJY33K","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Determination of refractive index of various materials on Brewster angle","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Eugene A. Tikhonov","submitted_at":"2015-10-23T08:00:41Z","abstract_excerpt":"Studied experimentally the origin of the non-zero reflection of p-polarized radiation (TM) of Brewster's angle. The results have shown the residual reflected light in the vicinity of Brewster angle occurs due to inaccessibility 100% polarization degree the incident linearly-polarized radiation and installation of the zero azimuthal angle. These factors create the s-component of the radiation reflected from the examined surface indeed. A smooth change of reflected light polarization in the vicinity of Brewster angle in the sequence p-s-p appears due to the changing power proportion of reflected"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.06850","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:29:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2OcVAWGImryj6CQEJw1SjTOXiTxyNGCt/laF7D1kbu01D9yWxvtBvJFC4Hvx9WAANxW8+dyg+iYleeqT5bFJBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T20:57:34.108332Z"},"content_sha256":"6e91aaba547b8be3ef472747004875ae3223f3822ac264395e0f50fcd78936ad","schema_version":"1.0","event_id":"sha256:6e91aaba547b8be3ef472747004875ae3223f3822ac264395e0f50fcd78936ad"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2IGKBKO5WYHGWKN5BHKISJY33K/bundle.json","state_url":"https://pith.science/pith/2IGKBKO5WYHGWKN5BHKISJY33K/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2IGKBKO5WYHGWKN5BHKISJY33K/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-16T20:57:34Z","links":{"resolver":"https://pith.science/pith/2IGKBKO5WYHGWKN5BHKISJY33K","bundle":"https://pith.science/pith/2IGKBKO5WYHGWKN5BHKISJY33K/bundle.json","state":"https://pith.science/pith/2IGKBKO5WYHGWKN5BHKISJY33K/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2IGKBKO5WYHGWKN5BHKISJY33K/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:2IGKBKO5WYHGWKN5BHKISJY33K","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"7c49e40c8f178a2b5be02a4b7dfa5b477ca8938ee6c46a6af87982d7a7273bcd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-10-23T08:00:41Z","title_canon_sha256":"0887f2fd0ff1ff172b28c45aa67e0e44c7994c6cf29ce27487d27ac04b18956e"},"schema_version":"1.0","source":{"id":"1510.06850","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.06850","created_at":"2026-05-18T01:29:22Z"},{"alias_kind":"arxiv_version","alias_value":"1510.06850v1","created_at":"2026-05-18T01:29:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.06850","created_at":"2026-05-18T01:29:22Z"},{"alias_kind":"pith_short_12","alias_value":"2IGKBKO5WYHG","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"2IGKBKO5WYHGWKN5","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"2IGKBKO5","created_at":"2026-05-18T12:28:59Z"}],"graph_snapshots":[{"event_id":"sha256:6e91aaba547b8be3ef472747004875ae3223f3822ac264395e0f50fcd78936ad","target":"graph","created_at":"2026-05-18T01:29:22Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Studied experimentally the origin of the non-zero reflection of p-polarized radiation (TM) of Brewster's angle. The results have shown the residual reflected light in the vicinity of Brewster angle occurs due to inaccessibility 100% polarization degree the incident linearly-polarized radiation and installation of the zero azimuthal angle. These factors create the s-component of the radiation reflected from the examined surface indeed. A smooth change of reflected light polarization in the vicinity of Brewster angle in the sequence p-s-p appears due to the changing power proportion of reflected","authors_text":"Eugene A. Tikhonov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-10-23T08:00:41Z","title":"Determination of refractive index of various materials on Brewster angle"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.06850","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:b5fd908bfee37ef049c0a872e55f0a0c7dc435bac22a0725895d1b115c0769b1","target":"record","created_at":"2026-05-18T01:29:22Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"7c49e40c8f178a2b5be02a4b7dfa5b477ca8938ee6c46a6af87982d7a7273bcd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-10-23T08:00:41Z","title_canon_sha256":"0887f2fd0ff1ff172b28c45aa67e0e44c7994c6cf29ce27487d27ac04b18956e"},"schema_version":"1.0","source":{"id":"1510.06850","kind":"arxiv","version":1}},"canonical_sha256":"d20ca0a9ddb60e6b29bd09d489271bdab51b9953cdff3b39f8b3fd139894a03a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d20ca0a9ddb60e6b29bd09d489271bdab51b9953cdff3b39f8b3fd139894a03a","first_computed_at":"2026-05-18T01:29:22.918202Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:29:22.918202Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XBPpOq4IFUY4L1PCBnhIo4C+/jdeErfp5Wdyj6AubPMDQ+ryWGw1avLu7vQmVhMyC7cs4mRpRML0WRmxyf0zCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:29:22.918967Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.06850","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b5fd908bfee37ef049c0a872e55f0a0c7dc435bac22a0725895d1b115c0769b1","sha256:6e91aaba547b8be3ef472747004875ae3223f3822ac264395e0f50fcd78936ad"],"state_sha256":"0615165815263cdef4710b2b66eea9e175c0bc0e42386e28fb702ce5f1dde4cb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uxkpKiwpxklpfntmKYkvfbebQivv7fJul56B0D3ZlJFZnserUC0UtsYNw8alKMJc0z6rcFeBbtwY2AwNlXLqCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T20:57:34.116397Z","bundle_sha256":"933cd41c17189ab88de270c8da0dc13da47e80fddaf6d0f344ea66c9eec2f233"}}