With the two convex lens, a cylinder, a ruler, transparent tape, double-sided tape do magnifier
It should be a Kepler telescope rather than a magnifying glass (a magnifying glass is actually a convex lens with a short focal length). The simple Kepler telescope is fabricated as follows:1, take out two magnifying glasses and a printed article
2 place a magnifying glass (the larger one) between you and the paper. The image on the article looks blurry.3. Place another magnifying glass between your eyes and the first magnifying glass.4 move the second pieces of glass before and after, until the printed content looks very clear. You'll notice that the article looks bigger and upside down.
5. Ask a friend to measure the distance between two magnifying glasses and record them.The opening is about 2.5 cm near the front end 6, a cylinder in the local shear groove. Do not shear the reels. The slot should accommodate the larger magnifying glass.7, the paper then cut a groove between the groove and the first groove distance equal to the distance recorded in your friends. This is where the second magnifying glass is placed.8. Place two magnifying glasses on the appropriate slot (big ones in front, small ones at the back) and fix them with tape.
