Lens Double-Convex Glass, 50mm Diameter, 25cm Focal Length. Pack of 20
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Specs
- MaterialGlass
- BrandGSC International
- Pieces20
- ColorClear
- Height4 in
- Model4-90935-20
- Free shipping
Free 30-day returns
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About this item
Product details
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.
- Free Shipping & Easy Returns – We provide fast, free shipping on eligible orders and offer hassle-free returns if you're not fully satisfied.
- Trusted Quality & Secure Checkout – All our products meet high scientific standards, and our checkout process is safe and trusted.
- Dedicated Support & Expert Guidance – Friendly, expert help available to support science educators, labs, and homeschoolers with any questions or product selection.
Specifications
Material
Brand
Pieces
Color
Warranty
Warranty information
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Warnings
WARNING: ⚠️WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov. Our products are not toys. Use in a laboratory or educational setting only. Not for children 15 and under.