{"product_id":"electromagnetic-spectrum-poster","title":"Electromagnetic Spectrum Poster","description":"\u003cp\u003eThis full-color chart is organized in octaves and includes all \"known\" ranges of Electromagnetic Radiation, including gamma rays, X-rays, ultraviolet light, visible light, infrared light, microwaves, radio waves (ULF, VLF, LF, MF, HF, long, short, HAM, VHF, UHF, SHF, EHF), cosmic microwave background radiation, and brain waves. The audio frequency spectrum is also here along with descriptions and properties of EMR including reflection, refraction, LASER, television, gravity waves, emission and absorption. There is even a chart of SI unit prefixes ranging from yotta to yocto. Includes instructions to help with interpreting the EMR chart. Ships in a durable mailing tube. Printed on 100lb glossy paper. 1200dpi. Dimensions: 39\"x20\"\u003c\/p\u003e","brand":"Unihedron","offers":[{"title":"Default Title","offer_id":46823742931100,"sku":"SKU010000413","price":12.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0742\/2332\/1244\/files\/Screenshot-2026-05-07-104803.png?v=1778188213","url":"https:\/\/vlagiftshop.nrao.edu\/products\/electromagnetic-spectrum-poster","provider":"The Very Large Gift Shop","version":"1.0","type":"link"}