Wait….did he actually explain ANYTHING?
Did he “break down” why this happens? Absolutely not.

I heard no explanation why this happens, especially why at 70 year intervals, nor what this might make happen (increase/decrease in magnetic fields, increased/decreased tectonic activity, etc).

The reporter says “I now understand it much better”….why? Did she not know the earth has layers? Did she not know the earth’s interior drives volcanoes? He said little else.

Just because you have a scientist on your program doesn’t mean he’s going to teach you anything. Very disappointed.

This is also a trick question, and in a way that I kinda dislike because it additionally confuses matters by the setup.

Specifically, any change to the electrical field in the wire triggered by something like flipping the switch IS always limited to propagating at the speed of light, and as such WILL take 1s to travel the ~300,000km through the wire.

There's a bait and switch here though, were if the wires are close enough, and the power on the wire is high enough, there is a strong enough magnetic field in the wire to reach across the 1m distance to the end of the wire by the light bulb. That magnetic field will induce a very small electric field on the wire as well. Calling that 'lighting' the bulb though is 100% a trick question though as no existing light bulbs are sensitive enough to light up from that little current unless the 'live' side of the wire is both in very close proximity and running very high voltage.

The part I dislike, is too many people believe that electricity running in a cable is 'faster' than light, and the trick here kinda re-inforces that rather than helping to clear that up for people.

Interesting.
Why can't we use hydrogen balloons to put instruments at the right levels above earth, I wonder?
Do they think the static fluctuations, including the rifts, can be attributed to the almost total lack of atmosphere, or the lack of magnetic field on MARS, or something else?
Maybe I should read the NASA release.....nope, no answers there, only a near verbatim transcript of the narration.
*quality scientific discoveries

*promote

way cool

The can being non magnetic I thought the magnetic field would just pass through it.

Used to work in chip manufacturing in a wafer fab. My work area was next to the Ion Implanters. There was a 15 foot gap between our area and theirs as the implanters created huge magnetic fields that screwed up the monitors and computers used in our area. We were expecting to get some new sun sparc workstations for use and had just been waiting for delivery. On the day they arrived I had an hour for lunch and an hour long production meeting. On the way back in to the fab. I see the IT guys leaving and ask if they had installed them. Lead IT guy "Yep, We were told it was crowded in your area but found you had this huge open space there so we set them up right up against the far wall giving you a lot more space to work in." Just as I hear 3 of the huge implanters start up..... Six Sun SPARCstation 5's killed in one day..... around 53k in costs. Fried.... I almost cried. We had really been waiting on those new 17" screens. A lot of people had their asses chewed off on that fuck up.

I'm going to assume that this is the Lorentz force, because it's the principle that involves magnetic and electric fields. But there are setups that can use subtleties of magnetic and electric fields, it can be very complicated. Any physicist rather than astronomer might be able to explain this better... or spot subtleties.

If you notice, it only starts moving once the back magnet has touched the wire. Which i think means that the wire is used to carry the current from the battery, with the magnets providing the magnetic field for the Lorentz force to drive the train. Effectively the force is felt by the electrons travelling in the wire (F = q(E + v x B), x being vector product, cross product), but there is an equal and opposite force to be felt by the 'train'; so it travels along. If you watch, it does look like the wire is responding - i'm pretty sure the small track would have shot off to the right if he hadn't held it, and it moves as the train approaches in the longer track.

So, circuit is set up by the the wire contacting between battery terminals, current flows in a circular fashion (mostly, assuming adjacent loops don't short). Magnetic field will emanate out from the battery on average radially, i assume (this is a simplification but a reasonably safe one), so the resulting cross product - and therefore direction of the force - acts along the remaining perpendicular direction to those, ie. straight up or down the loop depending on which terminal is leading.

If you want to see how that works, you can use the right hand rule. First finger is the direction of the electron's velocity (which is traversing loops so constantly changing in a circular manner), middle finger the direction of magnetic field which always comes out radially from the middle of the coil or track, thumb F the resultant force always points along the loop - make your first finger point in all directions of a circle, keep your middle finger pointing radially out relative to your first finger, and you will notice your thumb always points the same way, no matter how v changes circularly.

It is reasonable to assume that other factors are involved, probably a current is induced into the coil as the battery moves - the battery carries a magnetic field cos of the magnets, so we then have a moving/changing magnetic field in the presence of a wire; it should induce a current which would create a magnetic field in opposition to the field of the magnets.. and so on. But i think the Lorentz force is what provides most of the motion.

Not a credentialed physicist, but I'll give it a shot.
The metallic magnets make contact with the positive and negative on the battery and feed electricity to the coil, that induces a magnetic field in the coil. With the magnets arranged properly, the field in the coil likely attracts the 'front' one and repels the 'rear' one, making the 'train' move, and taking the induced field with it.

(If I'm wrong, please correct me)

I disagree with the fake phone vibrating being strictly mental re-wiring, or an itch from somewhere else being misinterpreted (by mental re-wiring). I get the fake vibrating ring all the time, whether or not I have my phone in my pocket, but it always feels like it comes from the same area where my phone usually is.

Being an engineer, I have always thought that the high intensity electro-magnetic field generated during a phone's ring has somehow damaged the nerves/muscles in the area closest to the phone. And since electrical impulses control muscle movement and the nervous system, they are a little screwed up (damaged?). Or they get stuck on repeat.

You see, I don't get too many calls, I don't answer my phone every time, I could care less if it rings or not, so why would my brain be re-wired to desire my phone to ring, creating phantom rings? It seems to usually happen when those muscles are in use (not just sitting down).

The force of magnetism falls off quickly with distance. The force required to offer much pull at 6 feet (your theoretical head) would be huge at 6 inches, so tuning the 'suit' would be insanely difficult...and you would have to stay exactly the same distance from the magnetic force at all times (with all parts) or the balance would be off and you would fall up or down uncontrollably. I'm sure there are other problems, like subjecting yourself to a super powerful magnetic field for extended periods maybe?

Hey newt, check the latest data and studies of the changing magnetic field of the planet and solar radiation may become a more pressing an issue than GW as a threat to human health-Cosmic radiation may kill us off before cyclical and human-effected climate woes.

The problem with GW responsibility of individuals could be solved in a single, collective stroke if humanity stopped buying shit they don't need-LIKE electric lights after sundown, LIKE fossil fuels, LIKE industrially manufactured bullshit for the masses. If anyone needs to pay carbon taxes it's the machine that teaches each new generation to over-extend their luxuries for the sake of the bowing at the alter of a contrived system printing the unnecessary, HARD CURRENCY.

Yeah. Do a degree in physics and you'll still not know "how magnets work." You can quantify everything about them, know how magnetic fields behave and affect other things, but not "how" they work. Instead you'll probably realise that we don't know how a lot of things work. We say "electric charge" with confidence and think we understand it, but at the end of the day, we don't know "how" it works. Charge is just a word that refers to something interesting we've seen, as is magnetism.

What kind of babble is this? Be specific, how is he actually using the magnetic field to tell where the prey is? Why does that depend on being North Aligned? How does facing north help plot a trajectory? Sounds like pseudo-science BS.

Your video, Fox Using Magnetic Field Resonance to Target Prey, has made it into the Top 15 New Videos listing. Congratulations on your achievement. For your contribution you have been awarded 1 Power Point.

Look up magnetic blowout.

The plasma moves because of the magnetic fields. I think, just like when you energize a coil and a metal rod moves one direction to ring a doorbell.

Hmm... they did say that, didn't they? I think they meant that it would be obvious 500 million years from now, but that it would take a while until that made the earth uninhabitable... in fact I have seen estimates of around a billion years for that too.

My billion years until the end of the earth's magnetic field came from "The planet in a pebble" by Zalasiewicz, which I was reading recently, and as a geologist he was more interested in the rocks inside the earth than the surface, which would be uncomfortable for other reasons by then too