Product name: Double-slit interference single-slit diffraction observerProduct size: 38.5*25.5*5*17cm(15.15*10.04*1.97*6.69in)Product weight: 885gInstallation:1. Install the support rod on the disc seat, tighten it with a wing nut. Insert the small plunger of the shading tube into the support rod hole2. Install a double slit and seat on one end of the shading tube, and a single slit tube, and install a measurement and observation system on the other end.Note:1. All parts of this instrument have been strictly adjusted and inspected before leaving the factory, do not disassemble them casually.2. If there is dust and stains on the color filter, double slit and single slit, wipe it gently with lens cleaning paper or a clean soft cloth.3. If the pressing screws on the color filter, single seam and double seams are loose, they can be tightened, but do not tighten them too tightly to avoid crushing the glass sheet.4. Double-slit seat. When the measurement and observation system is installed on the shading tube, it must be installed to the end, that is, the positioning ladder is in close contact, otherwise it will become larger and affect the experimental effect.5 The instrument should be stored in the instrument case when not in use and stored in a dry and ventilated place.