GSC International 4-90935-20 Double-Convex Glass Lens – 50mm Diameter, 25cm Focal Length – Optical Teaching Tool – Pack of 20 for STEM and Physics Labs

This GSC International double-convex glass lens is made of high-quality optical glass with polished surfaces for excellent clarity. With a 50mm diameter and 25cm focal length, it is ideal for teaching light behavior, image formation, magnification, and refraction. Perfect for physics demonstrations, STEM labs, and science classrooms. The set includes 20 lenses, allowing for group activities and lab rotations.

Visualize Light Convergence: Use to focus sunlight or a lamp beam to create a focal point, illustrating how convex lenses bend light

Explore Real vs. Virtual Images: Project distant objects onto a screen to demonstrate lens behavior in cameras and the human eye

Hands-On Magnification: Acts as a simple magnifier for exploring uses in microscopes, magnifying glasses, and telescopes

Refraction in Different Media: Observe how focal length changes when submerged in water or other substances to study refractive index

Compare Lens Types: Contrast with concave lenses to understand how shape influences light paths in optical systems

⚠️ Proposition 65 Warning for California Residents:

WARNING: This product may expose you to chemicals including styrene and/or bisphenol A (BPA), which are known to the State of California to cause cancer, birth defects, or other reproductive harm.

For more information, visit www.P65Warnings.ca.gov.

This item is not a toy. It is intended for use in educational, scientific, or professional settings only. Adult supervision is required at all times. Improper use may result in injury or damage. Always follow safety guidelines and wear appropriate protective equipment when handling.