A ray.
A beam of light is simply referred to as light or a light beam.
The beam of light from a flashlight appears straight in heavy fog because the water droplets in the fog scatter the light in all directions, making it visible in a straight line within the beam's path. This diffused light creates the appearance of a straight beam even though the light is actually dispersing in multiple directions.
A collection of rays of light is called a beam or a ray bundle.
scattered light
The beam of light stays straight because light travels in straight lines, following the laws of physics. As long as the medium through which the light is passing is uniform and there are no obstructions to scatter or reflect the light, it will continue to travel in a straight line.
Beam of light
A beam of light is simply referred to as light or a light beam.
The beam of light from a flashlight appears straight in heavy fog because the water droplets in the fog scatter the light in all directions, making it visible in a straight line within the beam's path. This diffused light creates the appearance of a straight beam even though the light is actually dispersing in multiple directions.
A collection of rays of light is called a beam or a ray bundle.
Each one is called ray and group of them is called beam.
scattered light
The beam of light stays straight because light travels in straight lines, following the laws of physics. As long as the medium through which the light is passing is uniform and there are no obstructions to scatter or reflect the light, it will continue to travel in a straight line.
A laser
scattered light
The light that a torch gives out is typically called a beam or a beam of light.
Since a laser beam is light all moving on the same direction, the path of a laser beam will be a straight line, inless it is redirected by a reflective surface.
In fog, the water droplets scatter the light in all directions. The beam appears straight because the individual water droplets scatter the light particles in a way that causes them to still travel in the same general direction as the original beam.