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How a ray of light can travel from air into glass without bending?
When light travels from air into glass, it may not bend if it hits the glass surface perpendicular to it, which is called normal incidence. In this case, the speed of light doesn't change as it enters the glass, so there is no bending of the light ray. However, if the light hits the glass at an angle, it will bend due to the change in speed between air and glass, a phenomenon known as refraction.
Is reflection the bending of light rays?
No,its called refraction. this actually happens when the light passes from one medium to another and thus the velocity of light changes, which enable the light to bend.
What happens when light hits a rough surface?
when light hits a rough surface it scattters.
What is the prerequisite of bouncing and bending light?
Light is normally not thought of as "bouncing" but being reflected."Bending" is called refracting when it comes to light and is caused by the light going through materials with different optical densities (air, water, and glass, though all clear, have different optical densities - indexes of refraction).Reflection can occur when two materials with sufficient differences of index of refraction are at a surface and the light hits them at an angle that is greater than a certain value - total internal reflection. Reflection can also occur when light hits a surface that is sufficiently flat and that surface is made up of a material with many free electrons (such as most metals) - a mirror.
How would you figure out light bending usng tangents and normals?
When light hits a mirror , it will be reflected symetrically to a normal . Tangents are not really used to figure out the light bending . If the light hits a round surface ( Still a mirror ) , you must draw a tangent and the normal of this tangent . Then , you work it out just like if it was a plane mirror . You cannot calculate light bending on something else than a mirror, but there is sometime a total reflection on glass or any similar substance . ( Same technique ) http://www.youtube.com/watch?v=4VmMr9TWzY4 http://id.mind.net/~zona/mstm/physics/light/rayOptics/reflection/r1.jpg
What is reflection and refraction of light?
Reflectivity isn't a property of light, it's a property of the surface that reflects the light. It is the proportion of the energy in an incoming light beam which when it hits the surface is reflected rather than absorbed.
What will happen if the light hits a plane surface and a rough surface?
If the light hits a plane surface, regular reflection will take place and if light hits a rough surface, diffused (irregular) reflection will take place. Here is a diagram for both. Diffused (irregular) Regular
When a ray of light hits a surface two things will happen to the light. What are they?
When a ray of light hits a surface, two things can happen: reflection, where the light bounces back off the surface, and refraction, where the light enters the material and changes direction.
What hapends when light hits a white surface?
When light hits a white surface, all the wavelengths of light are reflected off the surface uniformly, resulting in the surface appearing white to our eyes. This is because white surfaces reflect all visible wavelengths of light.
Why does light change direction when it hits things?
Light changes direction when it hits a shiny surface
What is the light reflection?
Light reflection is the bouncing back of light rays off a surface. When light hits a surface, it can be either absorbed, transmitted through, or reflected. The angle at which the light hits the surface will determine the angle at which it is reflected.
What occurs when light hits a irregular surface?
When light hits an irregular surface, it scatters in different directions due to the uneven geometry of the surface. This scattering is known as diffuse reflection, which causes the light to be reflected in a non-uniform manner, unlike in the case of a smooth surface where light reflects uniformly.
