Estimate the error in the measurement of the angles. Measure the angle of incidence and angle of reflection and find the % difference for each. (You should have three unique sets incident and refracted lines at the mirror face.) Using a protractor, draw the perpendicular to the mirror face at each intersection. This will be the line of the incident ray. Then draw a line through the original object pin mark to where each of the sight lines intersect the mirror face. If the lake is sufficiently rough, many points will satisfy this condition and the image will be averaged to a uniform smear.Remove the mirror and complete each line of site with a pencil to the surface line of the mirror.
Thus you see a reversed image of the sky on the lake. The same angle as the entering light coming from the image, where the angle is measured to a line perpendicular to the surface. The light reflecting off the surface has to have Only one such point for each image point because Image bounces off the lake into your eye. Make a map of points where the light leaving the You look at the surface of a smooth lake, you can Or smaller portion of light into your eyes. View, each point in the image is casting a larger
Have a set of features in the sky that compose the Such a surface averages the light that falls on it rather well. This means that parallel wave fronts of the energy remain parallel after the reflection.Ī different kind of reflection is diffuse reflection in which the surface is rough enough that large parts of the surface contribute to the 'image'. When light reflects off a sufficiently smooth Precision that allows you to see a single, clear Rays that can come off of a particular point of Reflection (angle of incidence = angle of The ocean, all the while obeying the law of If you think of connecting the dots from the cloud to your eye and drawing the incident rays coming off of each point of the cloud and reflecting off of the surface of You might then wonder, if light is being reflected off of a cloud and scattered in all directions, why do you see the cloud only at one point on the surface of the ocean and not at multiple places? Why isn't everything in the sky blurred together, for that matter? While it is true that reflected light rays are hitting all parts of the ocean surface, only the ones that bounce off at exactly the right angle can reach your eye. See here for more detail and an illustration of diffuse vs. Scatter in all directions and the original order will be lost. If the surface is not smooth (the moreĬommon scenario), light that hits the surface will Point-by-point reflected image of the original Reflected, and what reaches your eye is a Out side by side will remain so after being Reflection when measured from the normal of the surface. Other words, angle of incidence = angle of Surfaces that are very smooth (meaning that tiny grooves and bumps on the surface are smaller than the wavelength of the incident light) will follow the law of reflection for a perfect plane mirror. The amount of light that is reflected depends largely on how smooth the surface is. As you might have observed, a lake surface will reflect the surroundings beautifully on a calm day, but there will be almost no clear images at all on a windy day. Involves the reflecting surface itself, because not all surfaces are capable of producing a perfect reflected image. The second part of the answer to your question It is the rays that are reflected twice (once off of the object itself, and again off of another surface) that you see as an image of the original object. Some of it travels to your eye directly, while some rays first reach other surfaces these surfaces can, in turn, either absorb or reflect the light again. When sunlight (or another source of light) strikes objects such as clouds, mountains, etc., light that is not absorbed is reflected off of the object in all directions. All objects reflect some wavelengths of light and absorb others. Surface, you are seeing a reflection of a See a perfect image on the ocean or another
I understand why and how objects reflect, but whyĭoes it show perfect images of the surroundings?Īn example- "the ocean surface shows the clouds
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