"Sisyphus cooling" meaning in English

{
  "etymology_text": "Named after Sisyphus from Greek mythology, who was doomed eternally to roll a stone up a mountain, only to have it roll down again whenever he got it near the summit.",
  "head_templates": [
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      "args": {
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      "expansion": "Sisyphus cooling (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "The use of specially selected laser light, hitting atoms from various angles to both cool and trap them in a potential well, effectively rolling the atoms down a hill of potential energy until they have lost their kinetic energy."
      ],
      "id": "en-Sisyphus_cooling-en-noun-uCCcHYau",
      "links": [
        [
          "physics",
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      ],
      "raw_glosses": [
        "(physics) The use of specially selected laser light, hitting atoms from various angles to both cool and trap them in a potential well, effectively rolling the atoms down a hill of potential energy until they have lost their kinetic energy."
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "word": "Sisyphus cooling"
}

{
  "etymology_text": "Named after Sisyphus from Greek mythology, who was doomed eternally to roll a stone up a mountain, only to have it roll down again whenever he got it near the summit.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "Sisyphus cooling (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Physics"
      ],
      "glosses": [
        "The use of specially selected laser light, hitting atoms from various angles to both cool and trap them in a potential well, effectively rolling the atoms down a hill of potential energy until they have lost their kinetic energy."
      ],
      "links": [
        [
          "physics",
          "physics"
        ]
      ],
      "raw_glosses": [
        "(physics) The use of specially selected laser light, hitting atoms from various angles to both cool and trap them in a potential well, effectively rolling the atoms down a hill of potential energy until they have lost their kinetic energy."
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "word": "Sisyphus cooling"
}