Have you ever been in a house party whenever a drunken reveler ideas awkwardly and substantially to the speakers, creating them both to crash right down to the liquor-soaked ground? With no beats blaring, your party would suck, right? But worry less once you’ll visit your kitchen, get some equipment plus a supply of potato chips, dude, you’ve got yourself the making’s of a working speaker.
As noted by Popular Science, you’ll have to first collect your extremely low tech equipment: 7.5 meters (25 feet) of 30-gauge magnet wire, two 0.75-inch-height-by-0.25-inch round fridge magnets, two 0.5-inch-by-1.5-inch cardboard strips; a wooden cutting table, one 6-inch-long, 0.75-inch-diameter dowel, some sandpaper; a hot-glue gun, & most importantly, your potato chips – solid-cut chips work best. The taste probably isn’t appropriate here.
Now, go get your magnetic wire and place it around the dowel to produce a 1-centimeter-tall (0.4-inch-large) coil, while leaving 30 centimeters (12 inches) of cord on each stop. Then add hot glue and after it cooled off the dowel, slide the magnetic wire off the dowel. Utilize your sandpaper to remove about an inch’s value of paint at the end of the wires, and there you have it, the voice-coil component is complete!
To assemble the audio segment, collapse the cardboard pieces into a Z shape. Then glue the magnets and strips to the cutting board, before gluing the coil to a thick-cut potato chip. Glue a cardboard strip to both sides of the chip, and position the coil over the magnet.
Next, connect the speaker wires to a home entertainment system or a guitar amp, and rock out using your tiny, somewhat edible speaker!
Audio devices are a whole lot more advanced these days compared to the original – created in 1921 by two researchers employing simply the same pieces of equipment you used here – nevertheless the functioning principle is essentially unchanged. A piece of wire is twisted around a permanent magnet, and an electrical current is passed through it, producing an electromagnet.
It is variably drawn or repelled from your permanent magnet, as changing wavelengths of present are transferred through the wire; this movement pushes and pulls the speaker’s cone, and it’s these vibrations that cause sound waves to be transmitted through the air.