If you're looking for a low-cost, high-impact educational tool, the Fresnel lens from Geyer Instructional is a perfect choice. This ultra-thin, lightweight lens is a fantastic way to explore how light bends, magnifies, and concentrates. It’s ideal for STEM experiments, optics demonstrations, and even survival scenarios where fire-starting is essential. The Fresnel design allows for high magnification in a thin, flexible form, making it convenient to carry and easy to integrate into classroom kits or emergency gear.
https://www.geyerinstructional.com/fresnel-lens/
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