• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

To find the refractive index of light in different materials.

Extracts from this document...


TILLE :what are the refractive indexes of light in different material? AIM : To find the refractive index of light in different materials. APPARATUS : Ruler Protractor Plain paper Ray box Perspex block Water Container Glass block DIAGRAM BACKGROUND INFORMATION When a light ray travels from air into a clear material such as glass or water, you can see the ray change direction. This is called refraction. Refraction happens because light travels faster in the air than in other substances. The amount by which a light ray bends when it goes from air into another material depends on two things : (a) what the material is (b) The angle of incidence The angle of incidence is the size of the angles between the ray before it enters the substance and the normal. ...read more.


Analysis From the result that I had gathered, the relatice index can be found the sin of incidence devided by the sin of refraction between two material. The incident and refracted rays are on opposite sides of the normal at the point of incidence and all three are in the same place. The ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant. The result had shown that the water had the lowest refractive index which is 1.06 and the glass had the highest which is 1.53 .This could be propotional to the density of the material because glass has the largest density and the water had the lowest. ...read more.


More different kind of other materials could have been perfomed to see if density affects the reflactive index. The graph shows many irregular results in each material, which are not near the best-fit-line. These would have been a result because inaccurate reading of the protractor may given irregular results, the normal may not have been drawn accurately at 90 degree to the template of the glass block, in some material, some angles gave more than one ray on the other side, and the wrong ray might have been used. For example the water experiment, there were rays given off from the water, the plastic container and also the ray that passed over the container and the light ray from the ray box was difficult to use ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Resistant Materials section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Resistant Materials essays

  1. In this investigation I aim to find out which materials are the best insulators. ...

    The black line on the graph shows that newspaper was the least effective insulator, as it is closest to the results of the non-insulated material. All of the lines on the graph follow the same decending trend, showing that their were no anomilies in the results. The thickest material (carpet)

  2. What factors affect the cooling of hot water in a container?

    On the basis of this experiment I would say it is a reasonably fair test.

  1. Investigating what kinds of materials are best at keeping water in a boiling tube ...

    62.5 120 61 62.5 64 62.5 150 60 62 63 62 180 59 61.5 62.5 61 210 59 61 61.5 60.5 240 58.5 60 61 60 270 58 60 60 60 300 57.5 59.5 59.5 59 330 57 59 59 58.5 360 57 58 58 57.5 390 56 57.5 58

  2. Evaluation I created jewelry rings with two different methods stamping and etching.

    I think that the quality of your ring is very good. The joint is soldered very neatly.

  1. Technology Evaluation

    All this was shown in the 'cost' sheet. I was not satisfied with the materials and equipment used, because the materials that were used, made the energy costs increase but they kept the time and electricity costs low, but it took longer for the train to be made.

  2. Investigating the refractive index of different types of transparent solids and to learn how ...

    - The density formula is: Density = mass/volume, now find the density using this formula. - Repeat this procedure with the other types of glass. 2. Now that the density has been found, find the refractive index.

  1. Investigation Report - What are the most effective materials that can be used to ...

    Hold the remote at a 90? angle - place it on top of a book or any other flat surface, making sure the surface is flat and not tilted to an angle. 3. Using any material with a thickness of 5mm or by tightly compress those materials with several

  2. The Evidential Value of Glass Fragments.

    If the suspect wore a thick woollen jumper it would be the case that more glass fragments were present than what would be on a shell suit. But, there are many more influences that effect whether glass fragment would be embedded in clothing or how long they would persist these

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work