Professor Eric Laithwaite: Magnetic River 1975

blogs.imperial.ac.uk/videoarc...
The wonders of magnetism and the linear motor are captured in this 1975 presentation by Professor Eric Laithwaite (1921-1997) former Professor of Heavy Electrical Engineering at Imperial College London.

[@willpower8888]

Good ol' Barry...always the diligent assistant in Eric's demonstrations.

[@colonialrebel9964]

The amount of engineering just to make these tests possible is amazing.

[@HomicideHenry]

This man was brilliant. It is nothing more than a travesty, shame, and absoloute ignorance from the British and worldwide establishment to turn their backs on this man, when he developed the gyro. He gave so much to the world of science, physics, mathematics, engineering, etc. and the disrespect he received was (and still is) nothing short of a travesty.

[@rockwithyou2006]

+HomicideHenry totally. The father of maglev

[@Vivek-wo6ws]

Year 2021 Still its amazing!!! Being an Engineer i never seen any of my professors taught me like he did he is truly a genius

[@DaSheeK407]

Wow i wish i had a teacher like this when i was in school. Great demonstrations.

[@Unidentifying]

He is AMAZING at catching, very good hand eye coordination :D

[@antonnym214]

Absolutely one of the best videos on youtube. So instructional and entertaining. Not only is what he showing visually astounding, but his explanation is perfect for anyone at any level. This would be a godsend for a science teacher. (which I am).

[@Snailmailtrucker]

I love the way this gentleman teaches !

[@kevinjiang8234]

I'm an electrical engineer in my mid-20s. I sincerely wish I could've met and taken a course from this professor. He did a great job of building up from a physics principle to an engineering application. Only wish I could hear him explain how he understands electricity and magnetism.

[@zsozso411]

This why I like You Tube because of content like this! Thank you!

[@1000frolly]

This brilliant pioneering work on magnetic rivers is what is behind the 350km/hr maglev trains we now see in China.

[@cabbageman3676]

So China gets the good hi-tech leading edge stuff we create, and we get the worthless trash products from China. And our transport system is still the shoddy shambles it is with a lick of paint.

[@genelomas332]

@@RonJohn63 that's still more maglev trains than in Briton..

[@psycox8758]

Such a shame this technology hasn't yet found its place in everyday transportation. Huge respect for Mr Laithwaite and his work.

[@elischarutzler6757]

well...you need more power and metal do do it. It's only a solution for high speed traveling no matter the cost. (i know it's 7 years)

[@szpetnyjan]

My God. The sheer wonder and feeling enlightenment. I am 34 and I feel I now understand current flow.

[@perrybakalos7340]

a fantastic educational video from 1975 on early fundamental work in magnetic levitation linear motion

[@mpckelly91]

That was one of the most informative, coolest videos I’ve ever seen in my life

[@openedmind5619]

The sound the aluminum plate made asa it went over the coils. Reminded me of the light saber in Star Wars.

[@liveuk]

So cool how we can listen to our ancestors explain their discoveries image a video with Tesla explaining. God rest your Genius soul Eric

[@krisjax7126]

Best 18min I ever spent on YT

[@lucifchristo]

These videos are far superior in their ability to explain in comparison to Modern

[@hoppyandhisholidayhelpers1714]

this guy is way cooler than Bill Nye. He makes me want to build a crystal radio or something. he's just shooting sheets of metal around the room without any safety goggles. kids take notes

[@DaSheeK407]

Wow since 1975 someone had figured out this technology and look how long its taken to implement it. Magnets are the answer to the future.

[@egria]

I like this kind of explanations - straight to the point and still entertaining by phenomenon itself and not by the fuss around it. An about phenomena - If I remember correctly - no mention about this kind of stuff of magnetism in school or university while this videotape is older than me. And mechanical model of the wave carrying object is amazing too.

[@ngc22072001]

Amazing Video Jason! Thanks a million!

[@jaimanohar]

Can we have such "Great Teachers" in this generation too?

[@tooalice]

Fabulous teacher about magnets.

[@dymo99]

Simply a very interesting video, great teacher 🙂

[@jaybefaulky4902]

10:10 this explains visually how nothing really exists, just the 'movement' of a charge. interesting.

[@omaralwareh]

Amazing! This is how science should be thought...

[@drissdaief9388]

Very instructive..and a good explications.. thanks ..

[@bad71hd]

The sciences are desd in america. Had i been shown this in 3rd grade it would have changed my life

[@leonreynolds77]

Excellent video!

[@prakashjakhere3244]

So amazing!

[@wothangclang]

I wonder if you can launch rocket with this application by building a ramp. We can atleast reduce half the fuel cost for launch by eliminating initial take of thruster burn

[@raphaelguardado2787]

Fascinating !

[@iamh2ok9]

An insight or eye opener, to the EVGRAY forum membership and many thanks to Josephine Seyer for posting it to US.

[@ayoubhassanramzi8727]

What an amazing video of a scientific research.

[@HansLiu23]

this guy knows magnets!

[@mr.madraskirukal2202]

Excellent thank you

[@richardhod2]

Who is Barry? We need to know!

[@BurstNibbler]

enlightening

[@MrDXRamirez]

A completely new highway and mass transporation system can be built with these principals and do away with the internal combustion engine. Turning highways into magnetic rivers and vehicles made of aluminum. No more traffic tickets. No more deaths. No more pollution. No more special interest. Just a real cool way to get from coast to coast, nation to nation, and literally costing us nothing for the magnetism and the ore, completely nature-made once labor builds the system. The rest is maintenance. A world where oil is not king.

[@daledupont3772]

Thanks much!

[@applewoodcourt]

Incredible!

[@bobbypham5706]

nicely said.

[@mervyntsao]

Great video i have never seen～

[@musikSkool]

The problem isn't technology, it is money. If people didn't demand to be the ones to make all the money from things like this, we would have magnetic levitating roads by now. Do you know why roads are so cheap? It is because no one holds the patent for tarmac and demands that anyone making it can't do it without paying him. Every time a new problem comes up in engineering, someone solves it and then patents it and increases the cost of anyone else building new things. Like if someone was trying to put in a road, and there was a fence in the way. Then someone came up with a new and novel way to remove large amounts of fence cheaply and quickly but wont let anyone else use his discovery unless they pay him a lot of money. The world we live in just chooses to do without, and in a few decades when the patent lifts, someone picks up the technology, and then discovers some other problem that needed to be solved, but the patent for that still exists, so he cant use that amazing technology without paying several different patent owners. We simply do not use the best technology or methods because someone, somewhere, demands us to pay them to build something with our own 2 hands. There must be a better way to guarantee inventors make money from their inventions, without holding the whole world back because they had a good idea slightly before everyone else. If someone else came up with a good way of removing fences without knowing about the work done before him, he can't even start a business removing fences because someone else knew before him. How does that make sense? You should only get paid for the work you do with your own hands, if you invent something on your own, keep it to yourself until you can make it and sell it. If someone else comes to the same conclusion you did, then what you discovered wasn't that special since they were able to find it too. Patents confuse things because you can claim they copied your patent, but if you kept it a secret then they didn't copy your patent, they understood what was happening and put 2 and 2 together for themselves. Why do we punish people for putting 2 and 2 together for themselves, then trying to sell 4 to people that want it, just because someone they never heard about was trying to sell 4's unsuccessfully for years? It seems like finding people who want a 4 is a harder problem than figuring out that 2 plus 2 equals 4. So the person that finds people that need something, then try to find that thing to give to them, is of more value than a person that finds things but can't find anyone that needs them.

[@tanja8907]

Of all the people since then playing with magnets and we're still non the wiser of them.

[@aprilcombs188]

I would love to recreate this for myself.

[@NodeEntry]

So... many... concepts... EE student here. First time seeing this vidya. I couldn't help but try to use Maxwell's Equations in my head (the concepts, really) to try and explain what was going on. But I couldn't keep up, so I just enjoyed the ride. Side note: anyone else think Barry looked pissed the whole time?

[@neldadon]

very impressive

[@danielguevara9357]

thanks

[@horus2779]

Instead of using a secondary coil to create a stable levitation build that into the aluminium plate, instead of one plate use a plate of half thickness and have two of them, then cut them in half, now place two halves together then place the other halves on top with joints facing opposite directs so joint layers form a cross, not sure how you would secure them together, maybe glues or maybe a weld around the circumference, not sure if that will effect it but i believe it wont.

[@sorova]

Used a lot now in maglev trains

[@chrisbishop1571]

Makes great trains and ever better guns

[@met6187]

Marvellous, simply marvellous. I was unaware of him... obviously for the reasons stated below we as a species need to stop selling our progress for the sake of money making!

[@problemaccount]

railgun anyone..?

[@SuperFinGuy]

10:29 Something is moving horizontally but not the matter per se, what is moving along is the energy or a movement. A transverse wave, like an electromagnetic wave.

[@preston6974]

You’d expect this magnetic transportation to be widely used by now, but no:(

[@swagatkumarpatel1234]

This man is the father of Hyperloop

[@alanroberts7916]

a mile of this (that would be powerful enough to raise and move a person) would cost a fortune in copper alone. then there is the power consumption. Try putting a cart on wheels to see if the power would be better or worse. I suspect the cart would be way more efficient than to raise the same wieght (say 200 lbs.) and then move it while levitating it along for a mile.

[@VelhaGuardaTricolor]

The CAR industry made sure this will never be used for transport.

[@TranquilKao5]

The magnetism is normal. It is just the general perception of magnetism that is incorrect.

[@AtikFaysalFardin]

Wow

[@shaider1982]

has any one tried putting ferrofuid into a travellimg field?

[@sdsurfers7957]

I wonder if you could power a car this way

[@karimshaik5343]

why this is not in my school

[@needsomehike]

if alu is non magnetic how its electrons engaged with the electro-magnetic field generated by the electromagnet to make the lift?

[@shadow54656]

Is it wrong that I'm only watching this to help me sleep?

[@eXtremeDR]

Wonder what happens at higher frequencies of alternating current?

[@danieldaza3412]

At some point, the traveling magnetic field will increase its speed. However, at even higher frequencies, the coils impedance will increase, thus decreasing the current and the lifting capacity.

[@eXtremeDR]

Daniel Daza Thank you. And what will happen if the coils are superconductive? Like google: *ESA 2006 experiment*

[@AfroMan2111]

and so.. none of these applications have been implemented to society why?

[@DeezMistaReez]

Can someone explain if we could do this very experiment with permanent magnets?

[@SuperFinGuy]

What the professor is calling a traveling field is in other words an electromagnetic wave. As the magnetic field is waved it produces a current in the aluminium that in turn produces its own changing magnetic field that repels the initial field. That is why the thicker the aluminium the stronger the repulsion.

[@joeshmoe7967]

It won't work the same. It actually CAN'T work the same. The trick with the electromagnets is the CHANGING magnetic field. This changing field, INDUCES a magnetic field in the aluminum that OPPOSES the field that created it, thus providing the repulsion and motion. As shown in the beginning, some of the effect is possible with permanent magnets, but the stability and control is not there. Electromagnets allow the strength, direction, and frequency of the field to be controlled to suit the application.

[@jdessell]

Academia should focus on teaching children things like this instead of how to hate the country they live in.

[@bty1471]

Aluminum???

[@devildawg4730]

I can't believe I watched the whole video. :/

[@boltar2003]

Nice to see a lecturer and his assistant wearing suits. These days they'd be hard to differential from the students with their scruffy just fallen out of bed look.

[@bluemeaniemean]

so this is not normal magnetism?

[@alexcaesar5377]

There is no ignorance there is just bad teacher

[@Scarlettekkk_-]

That’s how the earth works. North and South Pole. We are one big electrical gen z 🪐 thank you the 9 kings of the universe for opening my third eye and revealing this video to me