| Artificial light (6) |  |
| Backlight (1) | |
| Beam of light (9) | |
| Blue light (3) | |
| Efficient light (1) | |
| Green light (2) | |
| Infrared light (7) | |
| Light (139) | |
| Light detector (1) | |
| Light pulse (3) | |
| Light source (11) | |
| Monochromatic light (1) | |
| Natural light (2) | |
| Red light (2) | |
| Shining light (1) | |
| Ultraviolet light (53) | |
| Visible light (9) | |
| White light (2) | |