2. Từ điển
3. Từ vựng theo chủ đề
4. Ánh sáng

• bathe
• beam
• blink
• chromatic dispersion
• condensability
• condense
• condensation
• condensable
• diffusion
• diffusiveness
• diffuse
• diffuseness
• diffusive
• filter
• full
• glint
• intensify
• keen
• pale
• paleness
• palely
• ray
• reflex
• reflectometer
• reffex
• reverberation
• return
• signal indicator
• uncondensed
• undiffused