a lens will refract light. a mirror will reflect the light.
at least four
Shop light
The bottom of a light bulb is a screw.
none if the source is purely violet and the filter is 100% red.
Non-Lambertian sources are light-emitting surfaces that do not emit light uniformly in all directions, which is characteristic of Lambertian surfaces. Instead, they have directional emission patterns, meaning they may produce more light in specific angles or directions. Common examples include LEDs, lasers, and certain types of reflectors, where the intensity of emitted light varies with angle. This behavior is important in applications like lighting design and optical systems, where controlling light distribution is essential.
No.
A lens is designed to refract light in a certain way. Lens shape can manipulate how light rays converge or diverge to create focused images. Different types of lenses, such as convex or concave, refract light differently according to their shape.
A convex lens causes light rays to converge, or refract, towards a focal point. This type of lens is thicker at the center than at the edges, causing light rays passing through it to bend inward.
Now suppose that the rays of light are traveling through the focal point on the way to the lens. These rays of light will refract when they enter the lens and refract when they leave the lens. As the light rays enter into the more dense lens material, they refract towards the normal; and as they exit into the less dense air, they refract away from the normal. These specific rays will exit the lens traveling parallel to the principal axis.
sunglasses, microscope, hand lens/magnify glass
Hand lenses do not refract light themselves. They allow you to see objects more clearly by magnifying them. Refraction of light occurs when light passes through different mediums with varying densities or refractive indexes.
Refract
its a concave lens(:
A lens
A lens
A lens is a transparent material with at least one curved surface that can refract light. Lenses are commonly used in cameras, eyeglasses, and microscopes to help focus and manipulate light rays.
That's how lenses work. If the light didn't refract, there would be no value to having a lens.