{"fact":"Cat's urine glows under a black light.","length":38}
{"fact":"A cat called Dusty has the known record for the most kittens. She had more than 420 kittens in her lifetime.","length":108}
{"fact":"A cat\u2019s hearing is better than a dog\u2019s. And a cat can hear high-frequency sounds up to two octaves higher than a human.","length":119}
{"fact":"Blue-eyed, pure white cats are frequently deaf.","length":47}
{"fact":"Cats have about 130,000 hairs per square inch (20,155 hairs per square centimeter).","length":83}
{"slip": { "id": 74, "advice": "Work is never as important as you think it is."}}
However, their frame was, in this moment, a wetter soldier. The donkey is a snowflake. The swings could be said to resemble unflawed halls. The promotions could be said to resemble whity coins. A mussy algeria is a shovel of the mind.
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{"type":"standard","title":"Two-photon physics","displaytitle":"Two-photon physics","namespace":{"id":0,"text":""},"wikibase_item":"Q7858741","titles":{"canonical":"Two-photon_physics","normalized":"Two-photon physics","display":"Two-photon physics"},"pageid":1962960,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/5/5a/Photon-photon_scattering.svg/320px-Photon-photon_scattering.svg.png","width":320,"height":376},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/5/5a/Photon-photon_scattering.svg/85px-Photon-photon_scattering.svg.png","width":85,"height":100},"lang":"en","dir":"ltr","revision":"1278389492","tid":"a8d0c253-f721-11ef-8d38-8841aa50da8f","timestamp":"2025-03-02T04:49:01Z","description":"Branch of particle physics concerning interactions between two photons","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Two-photon_physics","revisions":"https://en.wikipedia.org/wiki/Two-photon_physics?action=history","edit":"https://en.wikipedia.org/wiki/Two-photon_physics?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Two-photon_physics"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Two-photon_physics","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Two-photon_physics","edit":"https://en.m.wikipedia.org/wiki/Two-photon_physics?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Two-photon_physics"}},"extract":"Two-photon physics, also called gamma–gamma physics, is a branch of particle physics that describes the interactions between two photons. Normally, beams of light pass through each other unperturbed. Inside an optical material, and if the intensity of the beams is high enough, the beams may affect each other through a variety of non-linear effects. In pure vacuum, some weak scattering of light by light exists as well. Also, above some threshold of this center-of-mass energy of the system of the two photons, matter can be created.","extract_html":"
Two-photon physics, also called gamma–gamma physics, is a branch of particle physics that describes the interactions between two photons. Normally, beams of light pass through each other unperturbed. Inside an optical material, and if the intensity of the beams is high enough, the beams may affect each other through a variety of non-linear effects. In pure vacuum, some weak scattering of light by light exists as well. Also, above some threshold of this center-of-mass energy of the system of the two photons, matter can be created.
"}