MagLev C

wlsguy
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Re: MagLev C

Post by wlsguy »

chalker wrote: .....As an aside, here's a fun quick experiment you can do. Take 2 flat fridge magnets and put them face to face (magnetic side touching magnetic side). Slowly slide them back and forth past each other, then rotate one of the magnets slightly in relation to the other. Rinse and repeat this process until at some point you'll feel the magnets 'clicking' in small steps when you try to slide them past each other. You've now aligned the Halbach arrays with each other and what you are feeling is the attraction when the North and South poles align, versus the repulsion when the like poles align. If you use a ruler you can count the number of steps over a 1cm and figure out the actual width of the magnetic domains.
Nice experiment.
Kind of like something someone might find on a test (which is 50% of the overall score).......
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Re: MagLev C

Post by retired1 »

OK, I give up.
What is the "rinse" step for???
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Re: MagLev C

Post by chalker »

retired1 wrote:OK, I give up.
What is the "rinse" step for???
It's for making sure you get all the shampoo out of the magnets... did I forget to mention the part about using shampoo? ;)

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Re: MagLev C

Post by Balsa Man »

chalker wrote:
retired1 wrote:OK, I give up.
What is the "rinse" step for???
It's for making sure you get all the shampoo out of the magnets... did I forget to mention the part about using shampoo? ;)
Yeah, shampoo removal will help a little, but if you're looking for the winning edge, a 10% solution of Unobtanium will flush out some of the excess gravitons, resulting in an enhanced magnetic field 8-)
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Re: MagLev C

Post by illusionist »

Since we're talking about magnets anyway, I have a question. Is there anything wrong with having both the left and right magnetic tapes on the track have their north pole facing up? The vehicle would have north facing down on both the left and right magnets.

Also, is the Pitsco magnetic tape found here any better than the Kelvin one found here?

I know that with the Pitsco one, I'll have to be careful about which polarity I have facing which way, and that it only comes with 5ft for one item, but other than that, are there any other reasons why I should choose one brand over the other? I'm looking to get the Pitsco one simply because it costs almost half the Kelvin one, which comes with a total of 20ft and we won't even use half of it.
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Re: MagLev C

Post by bearasauras »

chalker wrote:
retired1 wrote:OK, I give up.
What is the "rinse" step for???
It's for making sure you get all the shampoo out of the magnets... did I forget to mention the part about using shampoo? ;)
Hey Chalker, maybe instead of using ;) next time, maybe you can write "I am being sarcastic." What do you think? ;)
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Re: MagLev C

Post by retired1 »

OK Bear, it was used in this passage:

As an aside, here's a fun quick experiment you can do. Take 2 flat fridge magnets and put them face to face (magnetic side touching magnetic side). Slowly slide them back and forth past each other, then rotate one of the magnets slightly in relation to the other. Rinse and repeat this process until at some point you'll feel the magnets 'clicking' in small steps when you try to slide them past each other. You've now aligned the Halbach arrays with each other and what you are feeling is the attraction when the North and South poles align, versus the repulsion when the like poles align. If you use a ruler you can count the number of steps over a 1cm and figure out the actual width of the magnetic domains.

So if part of it is BS, I guess that it makes the whole paragraph BS times 3 for all of the national folks that are getting a good laugh at my being naive.
Gee, dumb me--I thought that this was a science site rather than Saturday Nite Live.
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Re: MagLev C

Post by chalker »

In the interest of open, civil dialogue, I'm posting this publicly.

Retired1: I'll admit that the thought crossed my mind that you are subtly trolling us, since your account is relatively new. However, after exchanging a few PMs with you, and seeing your other helpful posts, I'll take your word that you are 'old school' and not fully aware of many current communication trends. Thus I apologize that my initial response to your query about the rinse step was a sarcastic one (since I assumed you were trying to insert some humor into the discussion and I was attempting to build upon that).

'Rinse and repeat' is a common idiom in the English language (see http://en.wikipedia.org/wiki/Rinse_and_repeat), that according to Google Ngram (http://books.google.com/ngrams/graph?co ... moothing=3) has seen an exponential rise in usage in the English corpus since about the mid 1990's (about the time I graduated from high school). Thus I can understand that someone older than I am might not be familiar with it's common usage or meaning (which in almost all cases has nothing to do with 'rinsing' and rather just repeating a series of steps over and over again several times).

That said, the majority of the members of this board are Generation Z (or the Net Generation)'. Those of us who are older (Generation X or Baby Boomers) need to be somewhat cognizant of the cultural gap we have with the youngsters who have been 'plugged in' to computers and the net since their birth. While I am fully aware of the challenges and misunderstanding that often occur due to the difficulty of communicating nuances and tone via text only communication such as on this website, if we are too rigid or formal in our communications, we risk dissuading SO participants from our common goal of inspiring them to pursue careers in the STEM fields. Science Olympiad can be sometimes viewed by outsiders as too nerdy and boring, when in reality it is a lot of fun and the majority of the people associated with it have very collegial, outgoing personalities, which don't suddenly get shut off just because we are interacting virtually.

The TL;DR conclusion I'd like to emphasize (http://en.wiktionary.org/wiki/TL;DR):

My reason for posting on SciOly.org is to help and promote SO, primarily with the students competing in it, but also with coaches, parents, event supervisors, etc. As such I generally try to communicate in friendly, casual forms in order to facilitate connections with others. I would hope that other members would do likewise, and understand that occasionally there will be misunderstanding and non-formal interactions.

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Re: MagLev C

Post by Flavorflav »

As a member of Generation X, I would like speak in defense of my cohort. We might not understand planking and we're not quite clear on what exactly Gangnam Style is, but we invented irony. At least, we believe we did - we aren't so good at history.
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Re: MagLev C

Post by mrsteven »

Flavorflav wrote:As a member of Generation X, I would like speak in defense of my cohort. We might not understand planking and we're not quite clear on what exactly Gangnam Style is, but we invented irony. At least, we believe we did - we aren't so good at history.
I don't understand planking, its just a funny (I guess?) thing to do on things that arent meant to be sat -or rather layed- on.
And Gangnam Style is a song, it has a dance in the music video like every other song.

My generation is a little.... odd.
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