Lab+Report+10

omg sorry for the late response. got a little delayed with my mom. here's the data analysis I am bringing another page for it tomorrow.

unit 10
 * __ Aim: __**

The goal of this lab experiment is to test the law of reflection at a planar surface, observe refraction in a lens, and learn principles of ray tracing. We observed the differences in the laser deflection thru concave and convex lenses.


 * __ Conclusion: __**

This lab was designed to help us learn all about light waves, lenses, and the laws that explain these principles in a variety of experiments. We observed how concave and convex lenses worked, as well as the angles of incidence and reflection. Overall, this lab was a success in teaching us about reflection, refraction and ray tracing with minimal human error. The only mistake would have been the errors in drawing the optical paths of the lenses from the laser to the screen on the opposite of the path.


 * __ Procedure: __**

we used the following as equipment for our lab: lab jack, back surgace mirror, force plate, glass plate, optical bench, he-ne laser, clear plastic ruler, thin lenses, mirrir mount. we began this lab with caution, we made sure that the laser beam was never pointed at our eyes. we began experiment No. 1 by setting up the He-Ne laser at the end of our optical bench, we adjusted the height of the lazer to 23 cm and placed the diffuse glass ruled screen 110 cm away, we then adjusted the laser so that it would hit the middle of our diffuse glass ruled screen. we proceded to mount the force tablet 50 cm away from the end of the laser and aligned it so that the 180- 0 degree line was paralled to the optical bench. we then placed the wooden mirror mount over the center of the force tablet and aligned it so that the laser would fall back onto itself. we then began moving the force plate in a clcokwise motion and began recording the angles of incidence and reflection for set angles that we chose. we did this for 5 different angles and then removed the mirror and replaced it with a flat glass plate. we again measured the incidence and reflection angles for five different predetermined angles. we began experiment number two by making sure the laser beam was never pointed at our eyes. with the laser already being mounted parallel to the optical bench, we proceded to place a thin lens onto the lens mount on the track and measure the deflection of the beam going through the middle of the lens. we then moved the lens up in a way that the laser would hit the bottom of the lens and drew the deflection angle,then moved the lens down so that the top of the lens would be hit by the laser beam and drew the angle. after we finished the measurements for a single lens we moved on to drawing the deflection angle on two different lenses, we did four different readings changing between concave and convex lenses, and changing the height at wich the laser hit each mirror.