Linear optical bench, polychromatic and monochromatic light.
Linear optical bench, polychromatic and monochromatic light, optical panel, masks and Hg spectral emitter
Set of emission spectra of 5 types of gases
Linear optical bench, double busbar, mercury spectral lines, monochromatic and polychromatic flashlights
Linear optical bench, diffraction, discrete spectra
Linear optical bench, polychromatic and monochromatic light, optical panel, slit and circle masks
Discrete light diffraction and wavelength set with laser and rectangular base
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