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Collapsible Silicone Funnel - Cat# 19-1234

Fresnel Lens - 6 3/8" x 8 3/4" or 16.5 x 22.5 cm

Product Number: B-14-325

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Quick Overview

Fresnel Lens

Availability: In stock

  • Buy 2 for CA$2.75 each and save 22%
  • Buy 6 for CA$2.50 each and save 29%


For all of you would-be eco-friendly mad-scientists, this lens will create a wow factor for your students/learners like non-other! On a bright sunny day you can extract enough solar heat to burn a copper penny or see how long it takes to heat up a bowl of water! They are 6 3/8" x 8 3/4" or 16.5 x 22.5 cm. The background grid is 1/4" or about 0.5cm square. Wooden frame not included. Sold Individually.

Check out this lens in action below! 



Fresnel Lens - Melting Pennies 

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