Newtons Seven-Disc Products Category : Optical Products > Optical Instruments INQUIRY Details With seven spectrum colors: red, orange, yellow, green, blue, indigo and violet. The seven-color-light can be combined into white light by rotating the disc. Send Inquiry Name:* E-mail:* Tel: Content:* Verification Code:* (All * must be filled in) [ Previous: ] [ Next: ] Related Products Three-Color Light Source C Optical Presenter(Magnet) Myopia Hyperopia Demonstrator Five Line Source Three-Color Light Source D Optics Demonstrator Newtons Rings Three-Color Light Source E