The Meissner effect is the expulsion of a magnetic field from a superconductor during its transition to the superconducting state. Walther Meissner and Robert Ochsenfeld discovered the phenomenon in 1933 by measuring the magnetic field distribution outside superconducting tin and lead samples.[1] The samples, in the presence of an applied magnetic field, were cooled below what is called their superconducting transition temperature. Below the transition temperature the samples canceled nearly all magnetic fields inside. They detected this effect only indirectly; because the magnetic flux is conserved by a superconductor, when the interior field decreased the exterior field increased. The experiment demonstrated for the first time that superconductors were more than just perfect conductors and provided a uniquely defining property of the superconducting state.
-wikipedia

You'd've thought that a particle accelerator would've had a lightning conductor and some fuses.

Haha - at first I was like "Holy shit, that guys an asshole for making the conductor think he's gonna crash!"

Perhaps, in hindsight, it would have been better to leave her alone as no doubt this episode was more disturbing to the other passengers' peace and quiet than a simple loud-talker. If the intention of the conductor was to get the woman to be quiet, she failed utterly.

I did make it up. I'm saying that without any effort, I could see any number of reasonable situations in which this behaviour would be understandable. If the conductor made some comment about her "uneducated" speech, then it makes sense she'd go off about her education. A bit of empathy, that's all.>> ^Gallowflak:

But... You just made that up.
"Excuse me, do you know how well educated I am?" is not something you can say. Ever. Ever. Not unless you're a sociopath or a hardcore solipsist, where everyone else is probably a figment of your imagination anyway.
She just seems self-absorbed, narcissistic to the extreme. Doesn't seem like there's much here to defend.

From a Yahoon article:

After the altercation, the conductor came on the loudspeaker and reminded people to keep conversations quiet, "especially those people who went to Harvard or Yale or are from Westport."

2 more comments have been lost in the ether at this killed duplicate.

This video has been seconded as a duplicate; transferring votes to the original video and killing this dupe - dupeof seconded with isdupe by chicchorea.

*isdupe>> ^Stingray:

dupeof=http://videosift.com/video/Female-Train-Conductor-Leaves-Mic-On

*dupeof=http://videosift.com/video/Female-Train-Conductor-Leaves-Mic-On

This video has been nominated as a duplicate of this video by Stingray. If this nomination is seconded with *isdupe, the video will be killed and its votes transferred to the original.

Damn that was close. I'm glad he missed as that was a commuter train and they aren't exactly anywhere as strong as freight trains. That would have killed whoever was in the car plus the conductor and maybe even some passengers near the front.

I hope they got a stern talking to though.

For those interested in the physics behind this this: http://en.wikipedia.org/wiki/Eddy_current

In conductors, electric currents are generated whenever there is a changing magnetic field. These currents generate their own magnetic field, which opposes the magnetic field which generates them. In this example, the magnet once dropped generates a current in the aluminum because as the magnet gets closer, the field gets stronger at the position of the aluminum. This generates a current, which creates its own magnetic field, acting on the magnet, and slowing it down.

Here's where it starts getting really interesting. The generated magnetic field will be notably weaker than the field of the dropped magnet, because the current is subject to electrical resistance. But what if we used a superconducting material, where there is zero electrical resistance, the two magnetic fields should equal eachother, right?

Check out this vid: http://videosift.com/video/The-Meissner-Effect-Awsome-physics

This is called the Meissner effect. This video shows an experiment of a strong magnet being put on top of a YBCO superconductor. All superconductors need to have their temperature dropped dramatically in order to to hit the superconducting threshhold known as a transition temperature. Typical transition temperatures are below 10 kelvin. YBCO is a unique material known as a high temperature superconductor, meaning that it can be cooled to its transition temperature with liquid nitrogen (about 70 kelvin).

Hopefully the conductor didn't have a heart attack.

same here in austria
trains get more expensive the service gets worse and they charge more for tickets while the car lobby builds new highways madness !!!

*They even threw out all the people of a commuter train last week because they could not replace an ill train conductor....

they were all late for several hours ... but at least no one used the train without paying...