Frequently Asked Questions - Light
Light is a form of electromagnetic radiation that is visible to the human eye and travels in the form of waves.
Light travels in straight lines called rays. It can also exhibit properties of reflection, refraction, and dispersion.
Reflection is the bouncing back of light when it strikes the surface of an object and returns to the same medium.
Refraction is the bending of light when it passes from one medium to another at an angle, causing a change in its speed and direction.
Transparent objects allow light to pass through completely, translucent objects allow only some light to pass through, and opaque objects do not allow any light to pass through.
A rainbow is formed when sunlight is refracted, reflected, and internally reflected in raindrops, creating a spectrum of colors in the sky.
A concave lens is thinner at the center and diverges light rays, while a convex lens is thicker at the center and converges light rays.
Shadows are formed when an object blocks the path of light, preventing it from reaching a surface behind the object.
The speed of light in a vacuum is approximately 299,792,458 meters per second (m/s).
Dispersion is the separation of light into its component colors when it passes through a prism due to different colors having different wavelengths and speeds.