What Is The Angle Of Incidence?
The angle of incidence is the angle between a ray of light and a line perpendicular to the surface of a mirror.
angle of Incidence = angle of reflection
To find the angle of Incidence, you first need to find the angle of reflection. This is done by using a protractor to measure the angles.
The formula for the angle of Incidence is:
θ1 = sin-1 ( n2 * sin (θ2) / n1 )
Where θ1 is the angle of incidence
θ2 is refraction angle
n2 is refractive index of medium 2
n1 is refractive index of medium 1
The angle of incidence is essential because it affects how much light is reflected off a surface. For example, if the angle of Incidence is large, then more light will be reflected than if the angle was small. This is why mirrors are often angled so that the angle of Incidence is large.
Examples Of Angle Of Incidence In Real-Life Situations
Following are a few examples of the angle of Incidence in real life;
- When you are driving at night and you see headlights coming toward you, the angle of Incidence is the angle between your eyes and the headlights.
- When you are taking a photograph, the angle of Incidence is the angle between the camera lens and the photograph’s subject.
- When you are shining a flashlight into a dark room, the angle of incidence is the angle between the flashlight beam and the wall’s surface.
What Is The Angle Of Refraction?
The angle of refraction is the angle between a ray of light and the line perpendicular to the surface of a lens. The formula for the angle of refraction is:
angle of refraction = angle of Incidence – angle of diffraction
To find the angle of refraction, you first need to find the angle of Incidence. This can be done by using a protractor to measure the angles. Once you have the angle of Incidence, you can use the formula above to calculate the angle of refraction.
The angle of refraction is important because it affects how much light is bent when it passes through a lens. For example, if the angle of refraction is large, more light will be bent than if the angle is small. This is why lenses are often angled so that the angle of refraction is large.
Examples Of Angle Of Refraction In Real-Life Situations
Following are a few examples of the Angle of Refraction;
- When you are looking at an object through a glass window, the angle of refraction is the angle between your eyes and the surface of the glass.
- When you are using a magnifying glass to look at an object, the angle of refraction is the angle between the lens of the magnifying glass and the object’s surface.
- When looking at an object through a microscope, the angle of refraction is the angle between your eyes and the microscope’s lens.