Why does light travel in a straight line?
Light travels in the straight line because it does not generally interact with the medium and wherever it interacts it does change its path like when it is entering a different medium with different permeability and permittivity(denser or rarer). This interaction and bending of light is called refraction.
How does the light travel?
Light travels as a wave. But unlike sound waves or water waves, it does not need any matter or material to carry its energy along. This means that light can travel through a vacuum—a completely airless space. It speeds through the vacuum of space at 186,400 miles (300,000 km) per second.
How does light travel in straight lines ks2?
Light travels in a straight line from a light source and if an object passes in front of it, the light can be blocked. Opaque objects let no light through. Translucent objects let some light through. Transparent objects let all light through.
Who discovered light travels in a straight line?
What are straight lines of light called?
A is made up of many light rays. A thin line of light energy is called a Light beams and light rays always travel in straight lines. Shadows form when an object blocks a light beam.
Does light travel in a straight line or can it bend?
Light Bends by Itself. Any physics student knows that light travels in a straight line. But now researchers have shown that light can also travel in a curve, without any external influence. For light to bend by itself, however, is unheard of—almost.