An easy-to-follow chart that simplifies the electromagnetic spectrum! Displays the wavelengths of familiar electromagnetic waves, such as FM radio, cellular phones and X-rays, and colorfully shows the relatively small bandwidth of visible light. Frequency increases in 10-Hz increments. An excellent chart for any science classroom! Printed on sturdy 80# paper, with matte finish, reduced-glare lamination and four metal eyelets at the top prevent tearing. 48" x 32". Also available in 8½" x 11" notebook size, pad of 30 (Catalog No. AP7230).