Monthly Archives: March 2017

The Floating Needle What will happen if you put a needle in a cup of water? It would sink. But you can do it if you use density. Things you’ll need: a needle, a sharp pencil, A strip of paper … Continue reading

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Chemistry

Chemistry Contents: 1. How to grow crystals 2. Lime breath 3. Chromatography 1. How to grow crystals Make a saturated crystal solution to grow crystals. These beauties take several days to grow, but they’re worth to wait! Things you’ll need: … Continue reading

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Amazing Paper Planes

Amazing Paper Planes Tried of the same old paper airplane designs? Try these two unusual ones. 1. Straw Plane Things you’ll need: one strip of paper 1.5 cm x 9 cm long, one strip of paper 2 cm x 12 … Continue reading

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The Moebius Strip

The Moebius Strip You’ve probably heard the expression, “There are two sides to everything”. But are there? You can find out by making this strip. Things you’ll need: several strips of paper 25cm long and 2cm wide, scissors, a pen, … Continue reading

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How to Make a Periscope

In 1854 Hippolyte Marié-Davy invented the first naval periscope, consisting of a vertical tube with two small mirrors fixed at each end at 45°. Simon Lake used periscopes in his submarines in 1902. A periscope works by using two mirrors to … Continue reading

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