Electromagnetism 2 & 3: The Left Hand Rule

[videoeyer]

This video looks like it was made in Volta's time XD , but it did refresh my memory :)

[RiCETOOB]

@videoeyer just in time for hsc physics >D

[bboydjoe]

if i saw these videos if i was small, i would be freaked out

[MrMrArrtt]

i taught that its flemming left hand rule and the right hand grip rule.



[Zashizzle]

I want this guy to narrate my life.

[copplemeister]

mmmm donuts...



[Sougandhpavithran]

One could never really understand these things back when we were in school. But your presentation has helped us all get a better picture of things.

[ut1880h]

There is nothing "wrong" with the video. Left hand rule is for NEGATIVE (electron) flow in a conductor. In electrostatics, the right hand rule for charge flow assumes POSITIVE charge flow. In fact, positive charges are the type used as reference conventions in electrostatics. They "source" the electric field while negative charges "sink" it. For X and DOT field directions, think of vector arrows. X is like arrow tail feathers (pointing AWAY from you). DOT is like arrow tip (pointing TOWARD you).

[miathermopolis3]

this is wrong!

its supposed to be right hand thumb rule and all.

its the other way round. :P

[HendrikBass]

Yes this vidio is wrong at +/- 6:50 min.

X = Clockwise magnetic field!

[mousiemiu]

nope - this video is correct. It is based on the left hand rule - X represents the electron flowing into the screen. Whereas most textbook would use X to indicate the direction of current nowadays.

(i.e. Electron flow - left hand rule, Conventional current - right hand rule.)

[diademonster]

Ah thanks, was slightly confused :P

[dandyname]

MY THEORY OF GRAVITY

Gravity is created by electromagnetism created by orbiting electrons of the positively charged nucleus.

There is no such thing as 'gravity'. Gravity is just the cumulative effect of electromagnetism.

That's it.

[jeremygogan]

thats what einstein spent his remaining 20 years of life trying to prove and he is right however it's a little trickier to prove than just stating three sentences with no math. lol

[stomsadskilek]

Preach it to the world brother! I think you're headed for a Nobel Prize!

[KikiManini]

@dandyname

Would you like to specify how electrons orbiting a positively charged nucleus would reproduce results such as Newton's inverse square law? Is YOUR theory of gravity falsifiable (how do you test it)?

[koolyoh213]

@dandyname yea physicist are so naive with particles such as hypothetical particle like gravitons wtf

[jfooj]

Oh, I thought this was about the other left hand rule.

[wildchildplasma]

I i'm not mistaken isn't this all due to a student dropping a compus near an experiment where he was first told off for his ungenius mistake. Year i could be talking about some fabal like the apple hitting neuton on the head moment.

I suppose a very real moment was archimedies ereka moment when he worked out how to asses for gold forgery with water mesurements as to serve best his king.

[BrandonFurtwangler]

The 'hand rules' always made it more confusing for me. I think its because we already have terminology for this type of thing...clockwise & counterclockwise. I dont see how introducing hands makes this easier because I have two hands and remembering which to use doesnt jive with my brain.

If you're in the same boat, this might help:

The field lines go clockwise if the charge were to flow toward you. (imagine you're in the wire and the electrons are racing at you)

[ajgio]

ITS THE OTHER w

[TECHKLEC]

I learned thi rule in High School Physics and still use it in my job!

[ajgio]

its the other way around if you were looking at it comming toWARDS YOU ITS ANTI CLOCKWISE THIS VID IS WRONG