Maybe you've ever wondered why you look backwards on a spoon or why you can see your reflection in a mirror, or on the water’s surface. All these phenomena occur due to reflection. In this short article there are submitted some extraordinary things that due to reflections effect occurring.
In first place it is important to emphasize the definition of reflection. “Reflection is the change in direction of a wave front at an interface between two different 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.” The law of reflection says that for specular reflection the angle at which the wave is incident on the surface equals the angle at which it is reflected. The reflection has three important laws; 1. “The incident ray, the reflected ray and the normal to the reflection surface at the point of the incidence lie in the same plane.” 2.”The angle which the incident ray makes with the normal is equal to the angle which the reflected ray makes to the same normal.”3.”The reflected ray and the incident ray are on the opposite sides of the normal.”
What these laws mean is; when light strikes the interface between two transparent media homogeneous and isotropic, a portion of the incident beam is reflected and remains in the medium from which it came and the other part is transferred to another medium. The angle θ1 formed by the incident ray and the normal N to the interface at the point of incidence is called the angle of incidence; the angle between the reflected ray and the normal θ1 'is called the angle of reflection. The reflected beam is in the same plane as the incident and the normal at the impingement point, but on the side opposite to this normal; the reflection angle θ1 'equals the angle of incidence θ1: θ1 '= θ1. In front of a plane mirror image is right because it retains the same position; virtually because it looks as if in the mirror (the actual picture is being received on a screen) and is symmetric because apparently it is the same distance from the mirror. The maximum mirrors are the surfaces on which the fraction of light that bounces.
On the other hand there are different types of reflections. One of these reflections is the specular reflection, this occurs when a ray of light and is incident on a polished surface (mirror) it changes its direction without changing the medium through which it propagates, we say that the light beam is reflected. Exactly as stated above in the previous laws. This behavior was first discovered through careful observation and measurement by Hero of Alexandria. During this reflection is lost (absorbed or dispersed) a significant amount of light. Best mirrors reflect 95% of incident light and the common mirrors only between 80 and 85%.
In another way, another form of reflection is the diffuse reflection. Opposed to the specular reflection the diffuse reflection appears in the rough surface. The reflected rays come out in all directions, because it’s at different points and may be different, producing a diffuse reflection. This kind of thinking does not generate images but is very important since it allows most opaque objects from different angles. I think that's what happens when you look in a spoon and that not having a flat surface and concave if this is due to the curvature, the light rays reflected reaching out toward a point called the focus and thus presents an inverted image.
In conclusion, we can determine that this process of reflection of light is a phenomenon of optical type which is very important in our lives for the simple fact that thanks to it we can perceive many of the objects that exist and that are all around us.
No comments:
Post a Comment