{"product_id":"convex-glass-lens-75mm-diameter-20cm-focal-lens","title":"Biconvex Glass Lens - 75mm Diameter, 200mm Focal Lens","description":"\u003cdiv class=\"flex flex-col text-sm pb-25\"\u003e\n\u003carticle class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-6997505d-df94-832b-a9ec-aa3692137010-13\" data-testid=\"conversation-turn-242\" data-scroll-anchor=\"true\" data-turn=\"assistant\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:--spacing(4)] @w-sm\/main:[--thread-content-margin:--spacing(6)] @w-lg\/main:[--thread-content-margin:--spacing(16)] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"1c37d7e1-6057-443f-a9b2-c1c7b69141f7\" dir=\"auto\" data-message-model-slug=\"gpt-5-3\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+\u0026amp;]:mt-1\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[1px]\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full wrap-break-word dark markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"65\"\u003e\u003cstrong data-start=\"0\" data-end=\"65\"\u003eDouble-Convex Glass Lens – 75 mm Diameter, 20 cm (200mm) Focal Length\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"67\" data-end=\"427\"\u003eBring the principles of light and optics into clear focus with this double-convex glass lens, a classic tool for homeschool and classroom physics experiments. With its symmetrical curved surfaces, the lens converges incoming light rays to a focal point, making it ideal for demonstrations involving magnification, image formation, and focal length measurement.\u003c\/p\u003e\n\u003cp data-start=\"429\" data-end=\"777\"\u003eStudents can use the lens to investigate how light bends through transparent materials, project images onto screens, or explore the relationship between distance, focus, and magnification. Its large 75 mm diameter provides a generous viewing area that makes experiments easy to observe during classroom demonstrations or small-group investigations.\u003c\/p\u003e\n\u003cp data-start=\"779\" data-end=\"795\"\u003e\u003cstrong\u003eProduct Details:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"797\" data-end=\"985\"\u003e\n\u003cli data-start=\"797\" data-end=\"833\"\u003e\n\u003cp data-start=\"799\" data-end=\"833\"\u003eDouble-convex optical glass lens\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"834\" data-end=\"852\"\u003e\n\u003cp data-start=\"836\" data-end=\"852\"\u003e75 mm diameter\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"853\" data-end=\"875\"\u003e\n\u003cp data-start=\"855\" data-end=\"875\"\u003e200 mm focal length\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"876\" data-end=\"939\"\u003e\n\u003cp data-start=\"878\" data-end=\"939\"\u003eSuitable for magnification and image projection experiments\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"940\" data-end=\"985\"\u003e\n\u003cp data-start=\"942\" data-end=\"985\"\u003eIdeal for optics and light investigations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"987\" data-end=\"1194\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eA valuable addition to homeschool science programs, co-op labs, and classroom physics curriculum, this lens allows students to explore the fascinating behavior of light through engaging hands-on experiments. \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/article\u003e\n\u003c\/div\u003e","brand":"Cornerstone Educational Supply","offers":[{"title":"Default Title","offer_id":44996278288584,"sku":null,"price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0532\/5042\/5032\/files\/ImageComingSoon.png?v=1718129602","url":"https:\/\/cornerstone-edsupply.com\/products\/convex-glass-lens-75mm-diameter-20cm-focal-lens","provider":"Cornerstone Educational Supply","version":"1.0","type":"link"}