An Experiment!!

Light Experiment: On the law of Reflection.

Materials: 

-Pins

-L-shaped mirror

-Soft board

-Plain paper

-ruler

-Protractor

-Pencil

Step 1: Draw a line AB with the point C in the middle.

Like this:

       

A-----------------.--------------------B

                        ^

                        C

(Oookay, that isn't quite right but... yea...)

Step 2: Draw the normal in a dotted line. (The normal is the dotted line down the middle)

Step 3: Draw 3 angles (measured from the normal), 20º, 40º and 60º. These lines will be the rays of incidence, or incident rays.

Step 4: Place the mirror on line AB. The normal should be in the middle of the mirror. (Mark out where the mirror stands. This is very helpful and will minimize error. :))

Step 5: Place Pin A and B about 5cm apart on the line of the 20º angle, such that Pin B is blocking the reflection of Pin A.

Step 6: on the blank side of the normal, pin Pin C in line with the reflection of Pins A and B (i.e., blocking the reflection)

<-- Like that.

Step 7: Pin Pin D in line with Pin C.

Step 8: Mark out the points where the pins have pierced the paper and draw a line that goes through point C. This acts as the reflecting ray.

Repeat with 40º and 60º.

In the end, you'll have something like this:

Measure the angles between the reflecting rays and the normal. This should be equal to the angle of incidence (angle between the incident ray and the normal), as light follows the law of reflection where the angle of incidence is equal to the angle of reflection. 

It's okay if the results are slightly off though. :) mine were one or two degrees off. But if they are really far apart... I guess something went wrong.

Meanwhile....

Fooling around!! :D

A miniature teepee!! XD lols.. I was bored. 

<-------Forever alone... 

Okies, that's all for now.