Get a piece of string and two empty cans (preferably soup cans). If you don't Pass the string through the hole and into the bottom of one can or cup. It might.
Two large paper cups (disposable plastic cups will also work) • Two paperclips Is the cup-and-string telephone still effective? • Now, keeping.
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2 tin cans and string - contesting
Therefore, the bottom of the second cup should start to vibrate back and forth just like the bottom of the first cup is vibrating, producing sound waves. The old "two cans and a string" technique or better yet, "two paper cups and a string" really does work. Skip to: Start of Article. So sound vibrations tend to peter out before they travel very far. Because the noise is from the string vibrating and when it is tight allows it to travel through better. Sewing thread should be good. The Science of the String Phone! - #sciencegoals
If you are using plastic cups, you can probably just poke a hole with a push pin or any other sharp point. Start your very own article today. Facebook YouTube Twitter Pinterest How Stuff Works Science. The classic example is the children's toy made by connecting the bottoms of two paper cups, metal cans, or plastic bottles with tautly held string. Here is why it works. The Can Mini attaches to mobile devices through the headphone jack, while the larger can attaches to computers via USB. Sign up for our email newsletter.