{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:FPUOADFPO7IUVUMSKZ5PYGCKTV","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":"cc78f815d4024677870e102a0251be759189a4afada67edf0c2b2dfc1ee271bc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2017-07-06T03:05:26Z","title_canon_sha256":"57f8924c84147972d70f1a4b07eb870640e9c789f1f170e00571e297b4a22a56"},"schema_version":"1.0","source":{"id":"1707.03728","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.03728","created_at":"2026-05-18T00:33:16Z"},{"alias_kind":"arxiv_version","alias_value":"1707.03728v2","created_at":"2026-05-18T00:33:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.03728","created_at":"2026-05-18T00:33:16Z"},{"alias_kind":"pith_short_12","alias_value":"FPUOADFPO7IU","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"FPUOADFPO7IUVUMS","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"FPUOADFP","created_at":"2026-05-18T12:31:15Z"}],"graph_snapshots":[{"event_id":"sha256:6abab7fc751debd6148306d5e8cba87bdfda2046ec59e3f8fe139816cf4dd2b9","target":"graph","created_at":"2026-05-18T00:33:16Z","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":"The Einstein-First project approaches the teaching of Einsteinian physics through the use of physical models and analogies. This paper presents an approach to the teaching of quantum physics which begins by emphasising the particle-nature of light through the use of toy projectiles to represent photons. This allows key concepts including the spacing between photons, and photon momentum to be introduced. This in-turn allows an intuitive understanding of the uncertainty principle. We present optical interference in the context of individual photons, using actual videos showing the development of","authors_text":"David Blair, John Moschilla, Marjan Zadnik, Tejinder Kaur","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2017-07-06T03:05:26Z","title":"Teaching Einsteinian Physics at Schools: Part 2, Models and Analogies for Quantum Physics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.03728","kind":"arxiv","version":2},"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":"sha256:17f73f077464e6df6dd97835569fddd0b51193d7c7b5a85a331ad46c06c25d99","target":"record","created_at":"2026-05-18T00:33:16Z","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":"cc78f815d4024677870e102a0251be759189a4afada67edf0c2b2dfc1ee271bc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ed-ph","submitted_at":"2017-07-06T03:05:26Z","title_canon_sha256":"57f8924c84147972d70f1a4b07eb870640e9c789f1f170e00571e297b4a22a56"},"schema_version":"1.0","source":{"id":"1707.03728","kind":"arxiv","version":2}},"canonical_sha256":"2be8e00caf77d14ad192567afc184a9d712de998b4964b7d86c562af7cb0fd7c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2be8e00caf77d14ad192567afc184a9d712de998b4964b7d86c562af7cb0fd7c","first_computed_at":"2026-05-18T00:33:16.469307Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:33:16.469307Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"24qJl6DvUg3daikRVQe24YyPxlMhShB5dFdUNthsaTXjouYy7yP5denHeNQtr2ZopwFet+MtJL3SDi3CL/E2Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:33:16.469953Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.03728","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:17f73f077464e6df6dd97835569fddd0b51193d7c7b5a85a331ad46c06c25d99","sha256:6abab7fc751debd6148306d5e8cba87bdfda2046ec59e3f8fe139816cf4dd2b9"],"state_sha256":"6d1201631b40cf62a0255523eba29af0d52ab7550515778ede98c36088449141"}