How Headphones Convert Electrical Energy To Sound
Scientist 9 months
109
When a fluctuating electric current flows through the coil(present in the earbud), it becomes a temporary electromagnet, attracted and repelled by the permanent magnet (already present in the earbud). As the coil moves, it moves the cone (diaphragm) back and forth, pumping sound waves into the ear. The electric current varies with respect to the sound waves. Thus, the diaphragm movement varies with respect to sound
The headphones mainly consists of two parts :
The 2 conductor plugs will have ‘Tip’ & ‘Sleeve’. The connection is fairly straightforward here.
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Drones have been a prominent topic of conversation for the last couple years and have quickly become adopted by the public. Drones, also known as Unmanned Aerial Vehicles (UAV) are useful for a number of things. They can deliver packages, surveillance, photography, search and rescue, and much more. Unfortunately some people use drones for things they shouldn’t, so their safety and necessity is hotly debated. The fact drones can perform dangerous tasks once only possible if done by a human being is very appealing to many, however, drones being used for surveillance has made many people uncomfortable. There have also been several instances of drones interfering with planes, often resulting in collisions. Whether you think drones are a good idea or not, here are ten things you should know about them.The First Armed DronesThe first documented case of an armed drone being deployed was in November 2001 to target an al-Qaeda member linked to the September 11th attacks.
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