19:["$","section",null,{"className":"science-method","children":["$","details",null,{"children":[["$","summary",null,{"children":"Method and worked examples"}],["$","div",null,{"className":"science-method-copy","children":[[["$","p","0",{"children":[[["$","link","css:/_next/static/css/math-text.DOJJ0Axc.css",{"rel":"stylesheet","precedence":"vite-rsc/importer-resources","href":"/_next/static/css/math-text.DOJJ0Axc.css","data-rsc-css-href":"/_next/static/css/math-text.DOJJ0Axc.css"}],["$","link","css:/_next/static/css/mathlive-static.BQxna-xm.css",{"rel":"stylesheet","precedence":"vite-rsc/importer-resources","href":"/_next/static/css/mathlive-static.BQxna-xm.css","data-rsc-css-href":"/_next/static/css/mathlive-static.BQxna-xm.css"}],"$undefined"],["$","span",null,{"className":"gm-math gm-typeset","aria-label":"Rock properties depend on mineral composition, texture and structure. Interlocking crystals can support strength. Slate’s splitting planes allow thin sheets. Porosity describes pore space; permeability describes how easily fluid passes through. Many pores do not guarantee high permeability unless pathways connect them.","children":["$","span",null,{"aria-hidden":"true","children":[["$","span","0",{"children":"Rock properties depend on mineral composition, texture and structure. Interlocking crystals can support strength. Slate’"}],["$","span","1",{"className":"gm-latex","dangerouslySetInnerHTML":{"__html":"s"}}],["$","span","2",{"children":" splitting planes allow thin sheets. Porosity describes pore space; permeability describes how easily fluid passes through. Many pores do not guarantee high permeability unless pathways connect them."}]]}]}]]}],["$","p","1",{"children":[[["$","link","css:/_next/static/css/math-text.DOJJ0Axc.css",{"rel":"stylesheet","precedence":"vite-rsc/importer-resources","href":"/_next/static/css/math-text.DOJJ0Axc.css","data-rsc-css-href":"/_next/static/css/math-text.DOJJ0Axc.css"}],["$","link","css:/_next/static/css/mathlive-static.BQxna-xm.css",{"rel":"stylesheet","precedence":"vite-rsc/importer-resources","href":"/_next/static/css/mathlive-static.BQxna-xm.css","data-rsc-css-href":"/_next/static/css/mathlive-static.BQxna-xm.css"}],"$undefined"],["$","span",null,{"className":"gm-math gm-typeset","aria-label":"Match a material to every stated requirement. Paving may need strength and wear resistance; roofing sheets need suitable splitting and low water penetration. A property table can distinguish candidates more precisely than rock-category names alone. Rocks of one category are not identical. Cracks, weathering, grains and pore connections can change a sample’s behaviour.","children":["$","span",null,{"aria-hidden":"true","children":[["$","span","0",{"children":"Match a material to every stated requirement. Paving may need strength and wear resistance; roofing sheets need suitable splitting and low water penetration. A property table can distinguish candidates more precisely than rock-category names alone. Rocks of one category are not identical. Cracks, weathering, grains and pore connections can change a sample’"}],["$","span","1",{"className":"gm-latex","dangerouslySetInnerHTML":{"__html":"s"}}],["$","span","2",{"children":" behaviour."}]]}]}]]}]],[["$","article","0",{"children":[["$","h2",null,{"children":["Example ",1]}],["$","p",null,{"children":[[["$","link","css:/_next/static/css/math-text.DOJJ0Axc.css",{"rel":"stylesheet","precedence":"vite-rsc/importer-resources","href":"/_next/static/css/math-text.DOJJ0Axc.css","data-rsc-css-href":"/_next/static/css/math-text.DOJJ0Axc.css"}],"$L1c","$undefined"],"$L1d"]}],"$L1e"]}],"$L1f"],"$L20"]}]]}]}]

Example 1

Example 2