What is the magnetic field?

The Tabletop Explainer is an intermittent educational vlog presenting answers to viewer questions, brief science lessons, and ideas for teachers and students. It is a feature of my blog "Tilts at Windmils" which can be found at http://www.davidcolarusso.com/blog/

Category:

Howto & Style

Tags:

• tabletop
• explainer
• science
• physics
• demos
• experiments
• magnetic
• field
• lines

[nagasaki95]

kinda ironic to find such idiotic comments on an educational video ;)

[tylus101]

Thanks for the video- the part where we could see the magnetic field with metal shavings was cool.

[silencerainbows]

I can see the lines that formed from the metal shavings, that is cool! But I still don't understand what the force is, I mean how is it generated? what is electromagnetism? I don't get it.

[MrVander78alex]

ha ha ha... campul electro-magnetic este generat de electronii din stratul de conductie din magnet. liniile de camp magnetic ar putea fi generate de acesti electroni care constituie un curent de electroni sau curent electric fiind pusi in miscare de catre fortele electro-motoare din electro-magnet sau magnet permanent. la un alt nivel: liniile de camp electro magnetice nu sunt altceva decat forma panzei spatio-temporare deformata de actiunea electro-magnetului si curentului electric...

[TheKcsmithy]

some sweet info here

[Aliciarocks25]

I'm working on this at school and I had no idea what to do (BLONDE HERE! :P) so I was able to look up how its works and what a magnetic field was!! Thanks video!! lol

[HPBgirl]

@lmaoihopeidogood

haha, WTF :p

[milenica0208]

lies see my videos

[bettycopper203]

boooooooooooooooooo

[Singetally]

@jordy45678 If he just drew on a piece of paper the lines, THEN that's just an idea visualized, because he drew it. I thought since the magnet literally separated the dust then it's not just an idea. I know i'm wrong, but i'm trying my best to explain my frustration :)

[Singetally]

@jordy45678 If he put a lot more dust onto the paper, wouldn't they still separate into lines? Doesn't that imply that there are literally lines we can't see? That we can only see evidence of it? He said in the video that the lines are just an idea visualized...but he literally put powder and it formed lines. Can you explain again please? >_<

[jordy45678]

@Singetally There aren't actually little magnetic field lines around a magnet, the lines are just vectors., they're just a visualization.