American Educational Products LLC has been supplying the highest quality classroom materials domestically and internationally for more than 70 years, With our creative in-house product development team, we are able to introduce new products on a yearly basis, Our products have helped teachers bring the joy of discovery, through hands-on and investigative learning styles, to generations of students, We are sincerely proud of our legacy and we promise to strive to meet the needs of present and future students as they prepare to become knowledgeable and successful world citizens, We live in a sea of waves, With this exciting visual aid, students can explore the unique relationship between the unseen electric and magnetic waves surrounding us, See the difference between wave-length and frequency scales in addition to understanding radio and microwave usage, x-ray, and gamma ray absorption and much more! Accompanied by an explanatory sheet, American Educational Products have a lead ship time of 21 days, SKU: AMED3517