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What makes sound? Simple physics

By |2018-05-31T11:49:26+00:00August 17th, 2017|Physics|

Playing a French horn makes sounds because you blow into it and that moves the air Like light, sound travels through the air in waves, but unlike light, sound is not made of lots of tiny particles. When something makes a sound, like you clapping your hands, it's because when you clapped your hands that shook the [...]

What is a wedge? – Simple machine – Physics

By |2018-05-31T11:49:24+00:00August 17th, 2017|Physics|

What is a wedge? This stone hand-ax from Chennai, India is a kind of wedge. A wedge is a kind of inclined plane What is a wedge? Like screws, wedges are really a kind of inclined plane, but they are so useful that people give them their own category among the simple machines. A wedge [...]