Interference and Diffraction of Light(Red) Products Category : Science experiment kits > 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 B Moire Fringe Three-Color Light Source C Myopia Hyperopia Demonstrator Three-Color Light Source D Newtons Rings Three-Color Light Source E Newtons Rings(Metal Frame)