Is this the correct way to measure the angle of refraction/incidence?
Place the object whose refractive index you wish to measure on a clean sheet of paper and draw round it.
Mark out, using dress making pins, a ray of light as it passes through the object by pricking the paper.
Remove object an pins and draw lines to show the path and thereby deduce the path as it passes through the object.
Measure the angle between the ray in the object and outside it using a protractor. I think there are also different ways to do this.. This is for a portfolio! :-)
I already did so, PsyDAG! I browsed, however I wasn't sure what to do so I came here.. Sorry if I sound rude! But thanks for taking time out of your day to help anyway! I apreciate it very much! :-)
Google "measure the angle of refraction/incidence".
The steps you mentioned can be used to measure the angles of incidence and refraction, but they may not be the most accurate or precise method. Here's a more common method to measure these angles:
1. Set up a rectangular transparent block or a glass prism on a table.
2. Use a protractor to draw a line on a sheet of paper as the incident ray before it enters the block/prism.
3. Place the paper with the drawn line below the block/prism at an angle, and adjust the angle until the incident ray enters the block/prism and follows the desired path.
4. Use a ruler to draw a line along the path of the refracted ray as it leaves the block/prism.
5. Measure and record the angle of incidence by using a protractor to measure the angle between the incident ray and the normal line (a line perpendicular to the surface of the block/prism) at the point of incidence.
6. Measure and record the angle of refraction by using a protractor to measure the angle between the refracted ray and the normal line at the point of refraction.
Remember to take multiple measurements and calculate the average values to get a more accurate result. Additionally, ensure that the surfaces of the block/prism are clean to minimize any refraction or reflection errors.
Please note that the steps provided here are a general guideline, and the specific experiment setup may vary depending on the materials and apparatus you are using. It is best to follow the instructions provided by your teacher, experiment manual, or relevant scientific resources to ensure accuracy and consistency for your portfolio work.