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.

Interesting.
I guess yes, in the other direction.
But will it work if you flip just one stack of magnets!?!?

IKR, I thought it was mostly the stacks of containers moving, but DAYMN.

I want to support a lot of what these guys are saying. But I think they are fundamentally wrong.

First. Although racism is alive and well in Class warfare, it's still not Black Vs White. It's Money Vs. the Poor.

Second. "Get out there and vote" is a Fallacy. You will never win anything when the game is already stacked against you on both sides.
What they need to do is get involved in the system. Create their leaders, stand behind them and further their own agenda.

I would hope their agenda is equality and not just them on top on others on the bottom. But that is is how the system works. You need to be involved in the process.

There are two HUGE roadblocks that have been built in these people's way. First. Education. You need to be smart in the ways of Politics. You need the highest education to go up against the leaders in power.

How do you get higher education? You need money. These people, such as the people of Detroit, have been pushed down into poverty. They need money for two things. The education of their leaders and their youth. And they need Money to challenge the position of power -- the system has slowly been transformed into a system that sides with money. Money to run in politics, money to buy off other politicians.

Without money and education, they have no power to effect change.
Without money and education, WE have no power to effect change.

And that's how the leaders in democratic countries stay in power. They've engineered the system in their favor.

In the US, there are only two Parties. and they are both as corrupt as each other. So it's a no-win, never-win scenario.

At least in Canada we can have and create new parties and as long as they have the support, they have to be taken seriously.

Stacks on!

The slap bands don't work because the arms are at angles to each other. Slap bands can only rotate in a straight direction (They are basically tape measure metal), so they wouldn't be able to come back to meet in the center like they illustrate. Also they have the motors all prettily lined up and facing directly off the wrist, that would require the material to be able to twist.

For the rotor size, these are fixed pitch rotors. You can change the pitch of the rotor to give you different flight characteristics and in general you have to match the pitch to the motor to be the most efficient. I may have this reversed, but a lower pitch prop gives you more torque and less overall speed, but a higher pitch prop gives more top speed, less torque. Making a prop that can be injection molded at that size that even works is difficult, making one that is super efficient would be even more so. QC would have to be incredibly exacting. As a gauge, the 2" x 2" quad has 1" props. They can lift it and buzz it around pretty well. Those things were a pain to get correct and I have a hard time imagining anyone making them more efficient than they are. In the case of the 2" quad, we didn't even paint the body because we want to limit the impact on flight time from added weight. All molded in color. That's how sensitive these things can be. There are better motors if you are willing to pay, but even then it may not be enough.
Go Pro records in HD, but doesn't actually broadcast anything (plus it is big enough to keep this thing from flying anywhere). If you want to broadcast video you have to do it in 640x480 tops. To do that you need something like an FPV system that broadcasts on a spread spectrum. If you went bluetooth you have an effect range that is pretty small. Wifi requires more power to get a longer range. A video transmitter system would require a separate device to attach to your phone to receive the signal and translate it to a PPM signal for through the headphone jack. But a VTX is pretty heavy as well.
And things may drain just a little bit of power, but it stacks up. At most you have a 250mAh Lipo battery that can fit in there. That isn't going to buy you a bunch of flight/video time.
Video on the phone is going to be subject to interference, so you would want to record on the quad. this would get you HD quality, but also adds weight, which means more battery draw, which means less flight time.
-B

Cord = tight stack 4'H x 4'W x 8'L

Half Cord = tight stack 4'H x 4'W x 4'L

A cord of wood is a well stacked pile 4ft X 4ft X 8ft...at least that's what I've been taught.

I hate that....but I love this stacking method. I'll have to try it next time I stack wood.

You gotta love Palmer's honesty. "... your gaming headphones are garbage, sorry..." "Traditional game pads are not good virtual reality input devices, you really need something better. Anyone who's ever used a keyboard and mouse can tell you, game pads just don't stack up, they're pretty shitty."

I mean, it's all true of course, and nothing new, but it's refreshing to hear people in his position (something of a leader figure in the industry) to say it out loud. =)

These IBC's are about guilt and folding to peer pressure, I don't want anything to do with this phony feel good horseshit. Some people are better off with a Robin Williams mindset, and I'm not talking about ALS sufferer's, I'm talking about the bleeding hearts. This whole meme is bullshit, and once the chips are stacked we will have another livestrong scandal and everyone will be shocked. Ohh no they won't because by that time they will be wallowing in their next gross abomination.

Hear, hear...A lonely voice of sanity, crying-out in a wilderness of the self-deluded...

I'd offer...Who gives a fiddler's fuck whose missile hit whose fight club incubator? Missiles found stacked neatly at two United Nations Relief and Works Agency school buildings to-date, and as far as that shit goes who is to say it wasn't the UN who brokered the bomb deal and sent the blue-helmet fucks to deliver 'em?

I have a suggestion: Israels' a big boy now (the 'dybbuk' have come a long way since 1947)... How about the rest of the world back the way back from The Never Ending Storyline of Real-Jew/Fake-Jew vs Persians (2700+ years and counting??) and let all interested parties duke it the fuck out? Oh and by all means, think of the children, consume more news-corp spin, and go out and get yourselves some solar-powered Vitamin D maybe??

I know...Let's identify and list 24/7-365 the names and addresses on news-tickers worldwide of the DAMAGED WHITE PEOPLE who manufactured the ordinance and continue to bank Hanover Phist on regional conflicts worldwide (while stealing $$ from the planet's wage-slaves) and eliminate ALL THOSE motherfuckers??


...'and the world, will be a better place'

The video starts with showing stacks of papers and implying that understanding the root of the issue is unnecessary and will take a long time to digest. This is a messaging that resonates with the Conservative mindset. The same technique was used to bash Obamacare, "the bill is too long to read" http://nation.foxnews.com/obamacare/2012/02/29/obamacare-regulations-two-and-half-times-long-bible

If you care to learn the real history of the conflict, I suggest this clip: https://www.youtube.com/watch?v=wb6IiSUxpgw

I disagree. There is a huge moral gulf between deliberately setting out to kill someone and having someone die while they are resisting your attempt to restrain them.

And "an overwhelming forceful attack" is the whole point of an arrest. It's not supposed to be a fair fight, the suspect is supposed to give up peacefully when he sees the odds stacked against him. That it ended in his death is because he resisted arrest.

Here's the thing. You know all those movies and TV shows where an innocent man resists arrest, solves the crime he's accused of and is eventually proven right? Guess what happens in real life... he still gets convicted of resisting arrest. The law is like that for a reason. It's not up to you to decide your guilt or innocence.

I'm not saying the cops were right (as @Jerykk pointed out, there's no context to decide if they should have been arresting him), but calling it murder is unreasonable.

Australia for arguments sake, but your assumption that my post was about one upping the US is incorrect.

I find the situation sad when so many people are so poorly treated by a system and yet still perpetuate that system. You mention not being able to play a game due to a lack of freedom, but how is that an issue compared to not getting medical or dental care for a child? Access to life saving drugs without mortgaging not only your own future, but the future of your kids. Oh woo-fucking-hoo, you can buy the handful of games our censors knocked on the head, but you can't feed your homeless or pay your retired police/firefighters pensions. You can't guarantee a living wage for huge swathes of the population so a few people can have even larger money vaults. Your security apparatus crawls through your vaunted rights at will, and convinces the populace that the guy shining a light on just how undermined US freedom really is, is a traitor...

If all I was concerned about is feeling superior, I could stop right there, mission accomplished.

But it's not. It's fucking sick that so many people eek out shitty existences for the protection and perpetuation of a tiny portion of the population. Feudalism at least was honest, you were born in the dirt and you died in the dirt.

American's are, from my experience, just people like everyone else. For the most part, wonderful people. I've met so many great people on my travels to the US. They deserve better, they fought and bled and worked for better. So how is it most never even get close?

It's not about who's better, or more fortunate, or who's national dick is collectively longer. It's about giving good people a fair chance rather than the so called 'representatives' conspiring to stack the game against them.