This Resource is intended for Institutional and Homeschool Educators only . Others may complete an activity to earn a free poster. Since July 20 we have experienced a frightening increase in demand for posters, so we're not sure how soon we'll be able to fill your request.
Larger requests take longer to process.
Please be patient. This poster is cut and folded to construct a working spectroscope. If you would like a sample, please request one only. Classroom sets come in 45 per package. Requires a diffraction grating.