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| beam of light; light beam; cones of light | |||
| cone angle (The angle between the edges of the spot light's beam. If you shine a flashlight on the ground, you will notice that it does not light the ground evenly, but that the light gets dimmer the farther from the center it gets. The cone angle determines how quickly this falloff happens) | |||
| beam | |||
| beacon; ground light | |||
| light reflex; Politzer cone; Politzer luminous cone; pyramid of light; Wilde triangle; Politzer's cone | |||
| illuminating cone | |||
| light-ray cone; luminous cone; null cone; ray cone | |||
| cone of light; light cone | |||
| Lichtkegel: 4 phrases in 2 subjects |
| Optics branch of physics | 2 |
| Physics | 2 |