Just in breif.
2006-10-01 00:19:01 · 11 answers · asked by Tasneembanu g 1 in Education & Reference ➔ Primary & Secondary Education
Reflection is when a ray of light bounces off a surface that's different from what it was traveling through before. Let's take, as an example, light traveling through air and then hitting a mirror. If it's a perfectly flat mirror, then the light rat should bounce off the surface at the same angle at which it hit the surface.
Refraction is when a ray of light hits a surface and passes though it, but it's bent. The angle at which it hits the surface, such as the top of a lake, is most often changed. The degree of this change depends on the properties of the matter on both sides of the refraction barrier.
Usually, both refraction and reflection act on some portion of the light that hits a surface. You'll get light that passes through the water and into the lake, and you'll get light that bounces off the lake's surface.
2006-10-01 00:27:24 · answer #1 · answered by drunksage 2 · 1⤊ 0⤋
Explain Refraction
2016-11-04 07:12:32 · answer #2 · answered by svendsen 4 · 0⤊ 0⤋
You should see my high school physics project. It was a home-made video explaining just that (and done with a touch of nerdy class, I may add).
Anyway, the first two guys are right; they're just boring. Maybe I am too.
If you want light to reflect that means that you want it coming mostly back out in your direction. Shine a flashlight through a window during the day and it goes right through. Shine the light through at night and, lo and behold, some of the light "penetrates" just like it did before, but some bounces back, "reflecting" back to you.
Now make this tricky. Get a tub of transparent salad oil in a transparent jar. Place that in front to of the night-time window. Shine your flashlight through the oil. If you can get straight through (tricky) the experiment may look almost the same. But if you angle the beam a little off to the side, where does the light go? Depending on how you set everything up it might have reflected of the oil right back at you. But I'll bet it didn't. I'll bet at least some of it got bounced off in a different direction. This light refracted. Did it glance off the window? Did it even make it to the window or is it shining on the ceiling now?
Fun with light.
2006-10-01 00:33:35 · answer #3 · answered by Anonymous · 0⤊ 0⤋
REFLECTION
Reflection is the change in direction of a wave front at an interface between two dissimilar media so that the wave front returns into the medium from which it originated. Common examples include the reflection of light, sound and water waves.
Reflection of light may be specular (that is, mirror-like) or diffuse (that is, not retaining the image, only the energy) depending on the nature of the interface. Whether the interfaces consists of dielectric-conductor or dielectric-dielectric, the phase of the reflected wave may or may not be inverted.
REFRACTION
Refraction is the change in direction of a wave due to a change in its velocity. This is most commonly seen when a wave passes from one medium to another. Refraction of light is the most commonly seen example, but any type of wave can refract when it interacts with a medium, for example when sound waves pass from one medium into another.
In optics, refraction occurs when light waves travel from a medium with a given refractive index to a medium with another. At the boundary between the media, the wave's phase velocity is altered, it changes direction, and its wavelength increases or decreases but its frequency remains constant. For example, a light ray will refract as it enters and leaves glass; understanding of this concept led to the invention of lenses and the refracting telescope.
2006-10-01 00:40:48 · answer #4 · answered by loved one 2 · 0⤊ 0⤋
Reflection means the boucing back or cuming back of light from a polished surface while refraction means the bending of light when it passes from one medium to another having different refactive index due to which the velocity of light changes and it bends from it's path.
2006-10-01 00:32:22 · answer #5 · answered by nikhita s 1 · 0⤊ 0⤋
when a ray of light touches an object & bounces back without passing that object is called reflection. where as if it changes its path, but crosses the object - is known as refraction.
2006-10-01 00:24:15 · answer #6 · answered by priyankji 4 · 0⤊ 0⤋
Reflection is a phenomenon in which light traveling from a medium is bounced back into the same medium.
Refraction is a phenomenon in which light travels from
one medium into the other.
While travelling from one medium to the other the speed of light and its wavelength changes but the frequency of light remains the same.This is because light has to cover the distance in the other medium in the same time.(Conservation of time)
2006-10-01 05:24:35 · answer #7 · answered by Brainy 2 · 0⤊ 0⤋
in reflection light falls on any object and bounces back. you can c that in case of mirror. laws of reflection
1) angle of incidence is equal to angle of reflection.
2) incidence ray reflected ray and normal lie on the same plane.
in refraction light falls on an object and it penetrates through it, it doesn't return. you can c refraction in case of glass plate. when light passes through one medium to other light bend towards or away from the normal. if it passes through rare medium to denser medium it bends towards the normal and if denser to rare then away from the normal
2006-10-01 16:32:19 · answer #8 · answered by jaiyant d 2 · 0⤊ 0⤋
when light falls on polished surfaces it bounces back.this is reflection.
when light moves from one medium to another it bends.this is refraction
mirrors reflect and lenses refract
2006-10-01 00:30:26 · answer #9 · answered by raj 7 · 0⤊ 0⤋
get to ur physics teacher
or
join my late night classes
were only refraction occurs
no reflection
got it in brief
2006-10-01 00:35:50 · answer #10 · answered by Anonymous · 0⤊ 0⤋