The Unification of Electricity and Magnetism (8 of 15)

Episode 8 of In Search of Giants: Dr Brian Cox takes us on a journey through the history of particle physics. In this episode we learn how Michael Faraday and James Clerk Maxwell showed that electricity and magnetism are two facets of the same thing.
This film is part of a series originally broadcast on Teachers' TV (www.teachers.tv/video/23645).
The series was made with the support of The Science and Technology Facilities Council (www.scitech.ac.uk).
www.lhc.ac.uk - Official UK LHC website for public and schools.
www.particledetectives.net - School resources on the LHC, how science works and particle physics.
Films produced and directed by Alom Shaha (www.labreporter.com).
Join the conversation:
Twitter: / stfc_matters
Facebook: / scitechfaccouncil
LinkedIn: / stfc

[@jaipipor]

Oh yes! I was looking for a documentary on electricity and magnetism for my lessons, and it had to be THIS man.

[@LeconsdAnalyse]

When i was a university student i loved this subject...nowadays Maxwell`s eqns are often written as differential forms. Beautiful subject!

[@TheSwamper]

I simply enjoy understanding our world better, in part due to videos like this.

[@RTRVII]

Electromagnetism is one of the most beautiful marvels of modern day physics. Writing down the four laws is so amazing.

[@omgwtfbbqtbh]

Yes you're right about comments not affecting the clip... but sometimes I glance down and read a comment, and I can barely resist replying to some of the more (or less, depending on your own opinion) imaginative posts. I have yet to find a way to disable comments so just trying not to read them will have to suffice. I admire the religion is like gravity analogy by the way.

[@TristanItschner]

I find the formulation in term of the equations of transformation superior: E = v x B; respectivly H = v x D (these correspond with the Lorentz force). Neatly they show that a moving electric field is inducing a magnetic, and the other way around. This is the fundamental connection between the two.

[@someonesperson]

yeah I had noticed, but thanks for pointing that out.

[@TristanItschner]

Read Maxwell's book 'A Treatise on Electricity and Magnetism'. His phrasing is superior (as is to be expected; he came up with it). You can find the book online as a pdf in scanned form.

[@zytigon]

excellent thanks

[@Archimedes555453525]

There are a lot of sceptic scientists allright, but what makes you think that science is based on it? Science has evolved through humanity's desire to discover and question things. It's not the same.

[@MusicianMeTube]

The magnetism in a natural magnet is caused by the spin of the electrons as they orbit the nucleus. All materials have spinning electrons, but in non-magnetic materials these electrons pair up and cancel each other out. Natural magnets are simply the materials that have unpaired electrons whose magnetic fields do not cancel out.

[@itsnobody]

@9hello123 General Relativity started off as an idea in Einstein's head...the mathematics of it maybe complex but the concepts are pretty simple

[@MusicianMeTube]

Not all observations were explained by the initial equations... without the extra term they are not consistent with charge conservation; that's why they had to be changed.

[@itsnobody]

@9hello123 actually ti does...it's directly connected to how much evidence there was for General Relativity when it was first proposed The reason people didn't know if General Relativity was true or not because there was little evidence for it prior to the eclipse...it just a controversial idea

[@itsnobody]

@MrRobotoToo Einstein was definitely aware of Max Planck's work and Planck and Einstein were close friends But Max Planck is still significant for quantum theory, I don't think quantum physics suffered much of any set back because of Planck

[@CamiloSanchez1979]

Viva Maxwell !

[@mattsmiddy40]

Maxwell was Einstein's hero. Faraday was a great man, but Maxwell was the true genius, up there with Newton and Einstein.

[@RexGalilae]

+mattsmiddy40 True. He's also up there with Dirac, alHazen, Bohr, Lorentz and Boltzmann to be one of the most undeservingly less famous scientists.

[@raquelalcantara8928]

Is magnetism and electricity related? Just tell me yes or no?!

[@stevenreid1990]

@mikejoepierce Gauss and Maxwell are essentially equals and I would even go as far to say that Gauss was a better mathematician than maxwell but maxwell was the better physicist. Although I have heard that maxwell could have discovered special relativity if he had survived longer.

[@HANXGAKU]

@sidewaysfcs0718 So what do you go for?

[@wowsa0]

This has to be a joke, congratulations you managed to get a lot of people to reply! If this isn't a joke then would you mind giving your internet connection to someone who needs it more?

[@luisvidal10]

Do u have subtitles in spanish?

[@Indrius]

@hovsec You need to use imagination to understand these equations and functions. If you manage to do this, math becomes a piece of cake. I imagine a graph when I try to comprehend a function and scales when I try to comprehend an equation. Most people hate math simply because they view it as a dull and boring pile of symbols and numbers that mean nothing and need to be memorized without understanding what they actually mean.

[@DonaldSleightholme]

I'm wondering if a hydrophobic powderised magnet could be magnetised in water 🤔

[@TrevM]

There's just one thing I must know .... for most of my life i'd just read the name James Clerk Maxwell and I say the Clerk just like it is spelled. But more than a few times I've heard people pronounce the name James Clark Maxwell .... including this video by the sounds of it. Whats the deal, clerk is pronounced as clark because language has its quirks and that is that?

[@D0g63rt]

We can attain real replicable results based on theory. So even the theory is incorrect, the results obtained speak for themselves.

[@itsnobody]

@Fand421 lol....instead of giving some type of reasoning, argument, or explanation as to how I supposedly "have many comments that have statements that do not have reasons attached to them" you just make the statement "you have many comments that have statements that do not have reasons attached to them" without any explanation, reasoning, or argument Can you give an example of what statement I made that doesn't have any reasoning behind it instead of just making baseless statements?

[@IBMua]

I was hoping he would explain how they combine.. =(

[@formerutuber]

light is both wave and particle.

[@itsnobody]

@xpsniperguy123 No not really

[@TristanItschner]

Just keep in mind that some of this information presented in this video could, deliberatly or undeliberatly, be manipulated or false. You're the one to judge. Today's Maxwell's equations, which were formulated in 1888 by Heaviside after Maxwell's death, set the divergence of the B-Field to 0. As of 2009 with the discovery of magnetic monopoles by the Helmholtz society in Berlin this is prooved false. You're not to just believe this.

[@jplate8]

moving a magnet around inside a coil of wire makes electricity... ...just like moving electricity around in a coil of wire makes a[n electro]magnet

[@mikejoepierce]

Gauss + Gauss + Faraday + Ampere = Maxwell

[@xxSwallowTheSunxx]

Can't u guys stop trolling? This series is awesome and it explains alot in the most simple way possible so instead of bringing gods and fantasy up try to learn something. Each of these episodes holds more truth than the whole bible.

[@itsnobody]

@MrRobotoToo lol....in order to distinguish between personal and impersonal and intelligent and unintelligent you would need concrete definitions of these, Newton, Faraday, and Planck certainly do not agree with you

[@FakeAssHandsomeMcGee_]

Your right. Science proves that God exists. I don't know why people assume that it offends God or whatever.

[@itsnobody]

@omnissient what's even stranger is that Michael Faraday was the very most religious scientist of all time besides maybe Newton or Lemaitre What's even stranger is that religion is what directly caused science to exist since seeking the truth and true knowledge is a religious idea. Any historian who has studied the history of science knows with 100% certainty that it was religion that directly caused science to exist, but atheists don't Science can't determine anything empirically untestable

[@itsnobody]

@Fand421 lol you didn't refute any statement I made again all you did was say "if you think something is 100% convinced then there's no point in arguing with you" in other words you're saying "I can't refute any statement he made so I can just throw personal attacks and ad hominems to trick and deceive people into thinking I refuted something he said" You can say that all day fool (atheist), it doesn't refute even one word I said

[@itsnobody]

I find it funny all these atheists are claiming that religion and science are incompatible when highly religious Theists invented the scientific method, classical physics, electromagnetic theory, and quantum theory There would be no Einstein orl Maxwell or electrical technology without Faraday "Speculations? I have none. I am resting on certainties. I know whom I have believed and am persuaded that He is able to keep that which I have committed unto him against that day" - Michael Faraday

[@gmondrax]

I respect Faradays Works but I believe that Father of electrical World is Nikola Tesla.

[@xpsniperguy123]

@itsnobody Are you religious?

[@jamesstone123]

okay, science makes people believe. That is not a bad thing - religion has done it for years. The speed of light unifies both energy and mass. E=MC^2. Everything is in some way connected. the same as a line of dominoes. Light is a waveform which can be detected by our eyes. Photons. Light is both particle and wave depending on many factors - wave-particle duality. Look up the double slit experiment - things at a quantum level have no possible analogy to how things work at a macro-level.

[@itsnobody]

@MrRobotoToo I never claimed what everything that Newton believed was true...just that Newton was smarter than all atheist scientists that ever existed in all of human history Just like how not everything Einstein believed was true Alchemy is also the origin of chemistry

[@TrevM]

I dont understand if you're For or Against ... you say you dont believe in intelligent design but then you say atheists are jokes. It doesnt actually matter to my point which is that you could say the opposite of what you said and still say nothing: "...why did HIGHLY non-religion people invent X" "tell me how many non-atheists know that Lemaître etc etc" pointless points are pointless

[@itsnobody]

Now that atheists have already ruined science and made it much more difficult to get things into peer-reviewed journals science is growing slower than ever imagined. Back when Theists were running things anyone could propose anything, if it stood up to the scientific method it would be accepted. "Speculations? I have none. I am resting on certainties. I know whom I have believed and am persuaded that he is able to keep that which I have committed unto him against that day" - Michael Faraday

[@communistjesus]

and WHom created GOD??? ... Man did.. Why?? well because early man need it to find reason behind natural phenomena.. Lacking an understanding of natural events his mind came up with the idea of a "GOD" or "Gods".. To make sense of the world in which he lived...

[@omgwtfbbqtbh]

Someone ALWAYS has to ruin a brilliant clip by making a religious comment... You can't have an intellectual debate over youtube comments... it just doesn't work. In fact, it's safe to say that most of the people who make religious comments are just trolling. Ridiculing religious people is like shooting fish in a barrel but for the sake of preserving everyone's sanity, just keep quiet! :P Also, people on both sides of the fence would do themselves better justice by spelling correctly.

[@rrockinn]

Newton Believed in God, Einstein believed in some form of a God, like Spinoza. just like Einstein said, "science without religion is lame, religion without science is blind". Knowing our world makes it more interesting but dont fall in the mistake of saying that there is no God. It was already predicted in Daniel 12:4 "knowledge shall be increased". and its also predicted that humans will still keep on rejecting their creator until the terrible judgment day.

[@itsnobody]

@Fand421 lol are you trying to throw an argument ad hominem? What a joke of an argument "I say he's not qualified and I say what he said is scary and untrue, but I have no reasoning, no argument no explanation behind that statement, but since I say so it must be true" Atheists are basically subhumans in terms of intelligence There doesn't exist even the slightest doubt in me that atheists block human progress, hold back technology, science, and medicine

[@balltip]

I take it that spelling is not your cup of tea.

[@someonesperson]

there is no need to add 'god' into these equations.

[@itsnobody]

@MrRobotoToo no Hawkings is the most overrated person, most physicists don't think Hawkings is the best modern day physicist at all, not even one modern day physicist would say he is Planck is much more significant than Hawkings can ever dream of being and quantum theory and E=hv changed everything in physics Weinberg on the other hand really is much more significant than Hawkings

[@Sforschondetta]

religion is based on faith and hope. people just use it for fear and control

[@Bardlettt]

Light is spelled L-I-G-H-T. It's quite obvious from you profile picture that when your god created you he did not say, "Let there be LITE!"

[@H1shman]

your the one who thinks what someone said over 2000 years ago is true so dont cut down ppl who are trying to find the real truth

[@leatese]

These laws and theories have real evidence behind them. Even the church has admitted the existence of such ideas about our world. These theories do no more to "discredit the bible" than they do prove the existence of God. You should not meddle with concepts and ideas that are so obviously beyond you. If they are not beyond you, then please, show me where your proof is, show me the texts you have written and the experiments you conducted to prove these theories incorrect.