Spectroscope (61 Near Nature Experiments)

You will need:

1. Rectangular cardboard
   box
2. Old CD/DVD
3. Cardboard roll (toilet paper roll)
4. Scissors & pen knife
5. Aluminium foil
6. Ruler
7. Cello tape

Spectroscopes help to understand the refraction of light. But instead of using a prism or a fancy scientific spectroscope, create your very own at home.

INSTRUCTIONS

1. You have to make 2 cuts in the cardboard
   box.
2. First cut makes an oval shape using CD.
3. Using the ruler as a measuring tool, draw a slit like this as shown in the picture.
4. Using a pen knife first cut the oval and then the slit. Make sure the slit is equal throughout the length.
5. Next, tape the CD on the inside of the box, with the edge in line with the slit.
6. Stick the cardboard roll in such a way that it points towards the CD inside.
7. Finally tape up the box with tape and
   aluminium foil, so that light may now enter into it only from the slit.

RESULT

To test how different gases from light produce different colours, point the slit in the box towards a light source and look through the cardboard roll. Your light sources could be a light bulb, a candle flame, street light, flashlight, etc.