Interference and Diffraction of Light(Red) Products Category : Optical Products > Optical Instruments INQUIRY Details Operating voltage 220V/110V, iron case,input red semiconductor laser,wavelength 650nm,5pcs of slit film installed on the moving ruler,with a white image plate and a propeller strut. Send Inquiry Name:* E-mail:* Tel: Content:* Verification Code:* (All * must be filled in) [ Previous: ] [ Next: ] Related Products Three-Color Light Source C Slit Film Optical Presenter(Magnet) Optical Full Set Myopia Hyperopia Demonstrator Light Propagation Five Line Source Three-Color Light Source D