Talk to a earphone - wearing friend on a mike made out of a matchbox and a pencil jumper lead . certainly , you could use a regular microphone , but would it be as coolheaded ?
Say you ’re MacGyver . You ’re in an evil - doer ’s unavowed lair , and are about to go and reveal his plan to the world . of a sudden , he realizes you ’re there , and he lock you inside a soundproof booth ( it ’s an give up biz show set ) and give on a helicopter . Your better half is outside the booth , listening in on a headset , but the mike inside the booth is destruct . How do you get the information to your partner ?
First of all , you do n’t laugh , because that kind of spot materialise every workweek on MacGyver . Secondly , because you ’re a cagey survivor who finds ways to apply ordinary objects to make fantastical creation , you do n’t panic . The tough guy , like all bad hoi polloi , is a stag party . He ’s leave an empty matchbox behind . On a desk in the cubicle , in a cup that say ‘ World ’s Best Supervillain , ’ you find a bunch of mechanically skillful pencil and some extra packs of jumper lead . You also feel a 4.5 volt battery . Since the equipment in the booth is smashed , there are a lot of length of telegram sitting around . You and your Swiss Army Knife are now ready to go !
First , reduce off three sections of pencil graphite . Two should be adequate in length , and just a bit longer than the distance of the matchbox . The third should be a small morsel shorter than the length of the matchbox . Use your knife to very cautiously scrape on side of each incision of plumbago until it ’s rough and uneven . Pierce the middle of each short side of the box double , and thread the long slice of lead through , rough side up . The loge , when look down at from above , should have two parallel lines sound through it lengthwise , with each telephone circuit peaking out just a bit on either side . Now take the short spell of black lead and lay it down across the two long piece inside the box . The unsmooth side should be put together , so the plumbago pieces stay to each other a bit .
Good ! You ’re almost there ! Take the wire connected to your partner ’s phone and part it in two . roll one piece around one of the protruding pieces of graphite and the other to one lead of the battery . Grab another piece of telegram and get in touch one conclusion to the second bombardment principal , and the other remnant to the second protruding piece of plumbago . ( You should be hook the wires to the black lead bits pop on the same side of the box seat . )
piece up the box and keep back it lightly , keeping it parallel to the ground . talk into it . Your voice will stimulate the air in the box to vibrate , and those vibrations will be passed to the plumbago pieces . They ’ll shake and shimmy , causing differences in the flow of the current in the wires . That flow will cause the bodily structure in your partner ’s headphones to vibrate , letting them discover whatever you have to say .
( Needless to say , this can also be done with some spare earpiece in an ordinary way , but it seems a ignominy to blow such a neat trick when there are n’t any supervillains around . But whatever you want to do is fine . )
Top Image : Takk
[ Source : The Book of Totally Irresponsible Science ]
MacGyverScience
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