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Description
LED TowerThis is the best tool we know to teach diffraction, light, and color. It's perfect for a classroom or lab with our RSpec Explorer spectrometer. See how effective the LED Tower is: watch the video at the top of www. fieldtestedsystems. com. The tower has the colors in ROYGBIV order, with a single white LED at the top. A rotary switch on the top allows you to select one color at a time, or all lights simultaneously. The LED Tower comes with a small 110
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.0 ★★★★★
Based on 2270 reviews
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Product Reviews
★★★★★ 5
Just get it!
Format: Paperback, Format: Paperback
Ignore the negative reviews. I’m convinced those are from the ones who didn’t actually read the book, lol. Buy the Captivating book and read it first. The second time you read it, do it along with this guided journal. I love it so far, it’s been great just to reflect deeper. No issues with the binding either. My copy is just fine.
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Reviewed in the United States on March 17, 2025
★★★★★ 5
Must have
Format: Paperback
Must have to go along with the book
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Reviewed in the United States on November 18, 2024
★★★★★ 4
Buy the book, too.
Format: Paperback
Somehow I got confused that this was the book AND the workbook; it is not, you must buy each separately. But from what I've read so far, the book says "out loud" what I've frequently thought to myself or felt in my heart. Wish I'd had this 40 years ago!
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Reviewed in the United States on October 5, 2023
★★★★★ 5
Just what I needed
Format: Paperback
Looking forward to using it
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Reviewed in the United States on April 1, 2024
★★★★★ 3
Disappointed
Format: Paperback, Format: Paperback
The item was a new purchase. However, several pages were folded; it's a journal that goes with the other two books I purchased.
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Reviewed in the United States on December 5, 2025
