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Angle of reflection experiment4/30/2023 ![]() ![]() We observed the reflected ray inside the lens just as the refracted ray disappeared and made a note of our observation. We created Table 2 with six columns and ten rows to document the data observed.Īfter taking our measurements, we rotated the platform so the incident ray moved from “normal” to 90° and back. We observed what happened to the ray as it emergeed from the flat side of the lens and went into the air. The flat side of the lens was still lined up with the “component” line on the platform, and the laser was aligned with the “normal” line all the way across the platform. We rotated the platform all the way around, without disturbing the lens of course, until the ray was incident on the curved side of the lens. We repeated steps 5 and 6 for the rest of the angles of incidence and checked frequently to make sure that we had not disturbed the lens. Not moving the lens, we rotated the platform 10.0° on the other side of the normal and recorded the angles of reflection and refraction Not moving the lens, we rotated the platform so the incident ray came in at 10.0° on one side of the normal and read the angles of the reflected ray and the refracted ray and recorded these angles (to the closest half degree) under the appropriate columns on our table. On a separate sheet of paper, we created Table 1 with seven columns and ten rows to document the data we observed while we conducted our experiment. We noticed now that all three rays fell along a measured angle from the normal line. Without moving the lens, we rotated the platform in both directions and observed the incident ray, the faint ray that was reflected from the flat surface, and the more intense refracted ray that exited the curved surface. The lens slipped at times during the experiment, and we recentered it on the “zero” angle. ![]() We spent a minute adjusting the lens until we were satisfied and had it in the right position. When it was precisely aligned, we saw that the laser followed the normal line all the way through the lens and across the platform, passing through the “zero” angle on both sides. We aligned the flat side of the cylindrical lens along the line on the platform labeled “component.” We were able to just barely see the edge of the “component line” under the edge of the lens. Initially, before we began our experiment, we used the adjustment screws on the back of the laser to make sure that the laser-line went straight down the “normal” line on the platform. The materials that were needed for this experiment were: a table, a pencil, paper for notes, a laser, a platform, and a lens. ![]()
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