Premium Krypton (Kr) Spectrum Tube, 26cm Subcategory_Entomology Supplies Seven-inch unfinished birch plywood smartphone

Seven-inch unfinished birch plywood smartphone stand ships ready for staining or painting for a custom desktop accessory made in the USA

3 glass - Transparency allows for high visibility

producing the nearly uniform field used to calibrate magnetic sensors and verify the Helmholtz geometry

Sliding-top wooden box 5 x 2 x 1 inches with a recess sized for a pair of 100mm (4-inch) bar magnets plus their keeper

Premium Krypton (Kr) Spectrum Tube, 26cm Subcategory_Entomology Supplies Seven-inch unfinished birch plywood smartphoneUsed to display krypton's characteristic atomic emission lines, this 26cm research grade spectrum tube features a 10cm central capillary for spectrometer based spectroscopy work.