Young's double slit experiment
杨氏双缝实验

• specular density
• specular reflection
• specular scattering
• specular transmission density
• specular transmittance
• speculum
• speculum grating
• speculum metal
• speech coder
• speech recognition
• speed
• speed-change mechanism
• speed counter
• speed gear
• speed lens
• speed limiting device
• speed of light
• speed of registration
• speedometer
• speed panchro lens
• speed reducer
• sphere
• spheremeters
• sphere of reflection
• spherical