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Turkey, Ankara
1 Level
713 Review
58 Karma

Review on ๐ŸŒˆ Optical Triangular Spectrum for Enhanced Physics Instruction by Rich Shankar

Revainrating 3 out of 5

Good for science school lessons

The packaging was excellent as was the delivery time. The quality of the glass showed no defects. I took 2 stars off the rating just because I couldn't shine and display rainbows as wide as advertised and there were no instructions.

Pros
  • Perfect for outdoor activities
Cons
  • Poorly thought out