Topic: glue

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Why is syrup sticky?

Water isn't sticky, and sugar on its own isn't sticky either. So why is syrup—a heated, melty combination of water and sugar—so very, very sticky? Emily Elert of MinuteEarth explains the sticky molecular structures of...

How to make a Hollow Mask Illusion

How do we perceive faces? With some balloons, newspaper, some paste for paper mâché, and paints, you can create a hollow mask that appears to follow you as you move back and forth around the room. Rachel and her child...

How to make a coin sorting machine with cardboard

With some thick cardboard, a cutting knife, some hot glue, a ruler, and probably a bit of trial and error, you can create your own DIY coin sorting machine. The key to the sorting "mechanism" is to cut the right size ...

A girl visits the postage stamp factory – Sesame Street

Before stamps became stickers, which started in earnest in the United States around 1989, they were printed sheets of paper with water-activated adhesive backing. In 1987, Sesame Street visited the US Postal Service t...


 
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