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BrandyBoy72

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  1. BrandyBoy72
    This is a video of a levitating frog. Apparently a 10 Tesla magnetic coil is being used to lift him. This is possible because pretty much all organisms have small amounts of ferromagnetic materials inside of them. And no this does not hurt the frog because the force is spread out over the entire body, but he is probably freaking out a little bit inside.
  2. BrandyBoy72

    Elektrik

    By BrandyBoy72,

    Personally I prefer building wall with working outlets and light switches over building a circuit in a lab, we do this in my Electric and Alternative Energy class. To me it just makes more sense, and I guess my time in physics is what gives me a good sense of how things like the electrical guts of a wall actually work. It seems like knowing how electrons flow through a system and through a switch is the basics for any circuit, functional or theoretical. However, I like that putting together a wall in this trades class that I take is actually quite challenging to understand still. Every basic wire running through the wall has 3 component wires: a hot, a neutral, and a ground. The hot is where the electrons flow when an appliance is in use, most of the time in AC (alternating current). The neutral is where the electrons flow to leave the circuit, and the ground is essentially like another neutral, but it is like a safety device. If a wire coating were to break, exposing the wire, instead of sending out random shocks starting a fire or electrocuting someone, the electrons will flow to the ground. And the wires are not as simple as connecting things with alligator clips, these are a bit more permanent. Sometimes you need to connect up to four wires at the same time all going to different places, this calls for a pig tail, which is essentially twisting the wires together so they all run to each other and then are capped off. This skill is both technical and requires a knowledge about how electrons will flow, and I really enjoy that.

  3. BrandyBoy72

    POLE VAULTING

    By BrandyBoy72,

    Pole vaulting is a very good example of the transfer of momentum. You are transferring energy from running down the runway into bend in the pole, and then that pole rotates after you jump, making the pole push you vertically.

    As a pole vaulter myself, I can say it is not all that complicated, it does not require you to be a physics student to get over the bar. However, it is super fun! It must be flying in the air and feeling the push of the pole behind you as you kick your legs up, hoping to get over that height you set for yourself. 
    Common things people will say about pole vaulting:
    "isn't it scary?" - It's more exhilarating than scary
    "What if the pole breaks?" - All poles have weight requirements, so a pole rated 150 would only be safe for someone who weighs under 150 lbs. Also these poles are extremely elastic, being made of carbon fiber or fiber glass, and it is very rare that one would break.
    "I'm afraid of heights" - It's not that high.. well that's subjective
  4. BrandyBoy72

    Ferro Fluid

    By BrandyBoy72,

    This is an example of how magnets can be used for levitation, or hovering if you will. All this is, is simply the force of the magnet overcoming the force of gravity of the magnet and the liquid. In this way, a "hover board" would be nothing other than a force keeping something off the ground, which is just what a normal force is when you have an object sitting on the floor. However, using magnets for levitation is cool because you cannot see the force acting on the object, and the force can also be transferred through things, putting your hand between something being levitated by a magnet would not stop the magnetic repulsion, which is pretty cool to think about and even cooler to see.

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