UV Beads, Change to Red, Ultraviolet: Educational Innovations, Inc.
Watch white beads change to red when taken outside the building! When returned they turn back to white. What causes the change? Humidity? Temperature? Fresh air? Birds flying overhead? The beads contain pigments which react with ultraviolet light from the sun, even on a cloudy day. They also change with most classroom UV light sources. Students can make their own UV light detecting bracelet by stringing the beads on a pipe stem or on a strip of rawhide. Great for teaching UV awareness! Use the beads to test the UV blocking effectiveness of sunblock, sunglasses, windows, etc. Lesson activities are included. The ultraviolet beads will cycle back and forth (to red and back again) over 50,000 times! Approximately 250 beads per package. All of our UV beads are the same size. Approximate bead dimensions: diameter 8.5 mm (5/16") - center hole 3.6 mm (9/64") Read more on our Blog - Chemistry of Ultraviolet Detecting Beads with Video Read more on our Blog - UV Radiation Activity
UV Beads & The Electromagnetic Spectrum - The Homeschool Scientist
UV Light: Educational Innovations, Inc.
1 X Ultraviolet Detecting Beads - 250 Beads Per Pack : Arts, Crafts & Sewing
Revealing UV with Color - Changing Beads - Steve Spangler
【1000Pcs Pony Beads】Each package contains of 1000Pcs rainbow colors large hole opaque matte pony beads along.Enough quantity to meet DIY needs 【Size
Auvoau 1000Pcs Pony Beads Bracelet 9mm UV Plastic Barrel Pony Beads for Necklace,Hair Beads for Braids for Girls,Key Chain,Jewelry Making (Change
Changes color immediately when exposed to sunlight, even on cloudy and rainy days, The more UV ray, the darker it will be. 7 Assorted Colors: Rose,
Miraclekoo UV Beads Scientific Multi Color Changing Bead UV Reactive Plastic Luminous Pony Beads,Fun for Jewelry/Bracelets Making,1000 Pcs
UV Light: Educational Innovations, Inc.
Uv beads
Auvoau 1000Pcs Pony Beads Bracelet 9mm UV Plastic Barrel Pony Beads for Necklace,Hair Beads for Braids for Girls,Key Chain,Jewelry Making (Change Color in The Ultraviolet)
1 X Ultraviolet Detecting Beads - 250 Beads Per Pack : Arts, Crafts & Sewing
UV Color-Changing Beads
UV Beads & The Electromagnetic Spectrum - The Homeschool Scientist
Ultraviolet Science Classroom Experiments for Science Lab
UV Light: Educational Innovations, Inc.
Auvoau 1000Pcs Pony Beads Bracelet 9mm UV Plastic Barrel Pony Beads for Necklace,Hair Beads for Braids for Girls,Key Chain,Jewelry Making (Change Color in The Ultraviolet)
