Diffraction Grating Slides, 1000lines/mm, Highly efficient embossed Holographic Optical Elements, For the direct viewing and analysis of spectra from different gas tubes and other light sources, Use in conjunction with colored film gels, Dimension: 2x2in
Diffraction Grating Slides, 500lines/mm, Highly efficient embossed Holographic Optical Elements, For the direct viewing and analysis of spectra from different gas tubes and other light sources, Use in conjunction with colored film gels, Dimension: 2x2in
Diy Fuel Cell Science Kit Classroom Pack, You Need To Split Water And Use Its Hydrogen To Generate Electricity Is Included, Whatever You Can Dream Up, What That Electricity Powers Is Up To You, Our Included Activity Guide Or Come Up With Your Own Ideas
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