How to make a telescope model for grade 9
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Building your own telescope is a fun optical experiment and it can be used to get a better view of the moon and other distant objects.
What You Need:
Two lenses with different focal lengths (We recommend 150 mm and 500 mm double convex lenses.)
Paper towel roll
1 piece of paper or cardstock
Tape
What You Do:
1. Roll up the sheet of paper or cardstock the long way to form a tube that is about the diameter of the lens with the shortest focal length. This will be the eyepiece. Tape the edges of the eyepiece lens to one end of the tube as neatly as possible.
2. Tape the second lens neatly to the end of the paper towel tube. Insert the empty end of the paper tube into the cardboard tube. Now your telescope is ready to be used!
3. Look through the eyepiece and point the other end of your telescope at a distant object. Slide the two tubes in and out until the object comes into focus. You will see the image upside down and magnified. If you have trouble focusing the telescope, you may need to lengthen the tube, either by using a larger piece of paper for the eyepiece end or a longer cardboard tube (such as from a wrapping paper roll).
What Happened:
You have just built a simplified version of a refractor telescope. The lenses at each end work together to focus on a distant object and magnify it so that your eye can see it better. The lens on the outside tube is called the objective lens. This lens collects light from whatever you point the telescope at. The lens at the other end .
Mark BrainLeast :)sofia(:
What You Need:
Two lenses with different focal lengths (We recommend 150 mm and 500 mm double convex lenses.)
Paper towel roll
1 piece of paper or cardstock
Tape
What You Do:
1. Roll up the sheet of paper or cardstock the long way to form a tube that is about the diameter of the lens with the shortest focal length. This will be the eyepiece. Tape the edges of the eyepiece lens to one end of the tube as neatly as possible.
2. Tape the second lens neatly to the end of the paper towel tube. Insert the empty end of the paper tube into the cardboard tube. Now your telescope is ready to be used!
3. Look through the eyepiece and point the other end of your telescope at a distant object. Slide the two tubes in and out until the object comes into focus. You will see the image upside down and magnified. If you have trouble focusing the telescope, you may need to lengthen the tube, either by using a larger piece of paper for the eyepiece end or a longer cardboard tube (such as from a wrapping paper roll).
What Happened:
You have just built a simplified version of a refractor telescope. The lenses at each end work together to focus on a distant object and magnify it so that your eye can see it better. The lens on the outside tube is called the objective lens. This lens collects light from whatever you point the telescope at. The lens at the other end .
Mark BrainLeast :)sofia(:
mark brainleast plz
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