It is the year 2015. This evidence has its consequences – it is precisely for that year moved during the heroes’ Back to the Future II “. The 1989 film was not a serious vision of futurists, but its effect on the mass imagination was much bigger than expected by the authors.
Heroes “Return …” landed in October 2015, with the approach of that date we feel under pressure to implement at least some of the vision of the film. One of the biggest challenges (well, except maybe time travel) turns out to be a flying skateboard. As a reminder – this is how Marty McFly Pomykała on the device:
It looks amazing, but if we can build something like that? The challenge has taken the company Lexus, and actually hired by her advertising agency. Lexus decided to show that – as says one of the engineers – “Things difficult to take time. The impossible takes a little more time. “
According to the film showing the formation of the board” a bit longer “is 403 days. Board was created in collaboration with specialized research materials research center IFW Dresden and the company evico GmbH, which produces superconductors. Lexus here is just a sponsor of the project – not a board will be manufactured, built it for advertising.
How does it work?
used superconducting levitation phenomenon. It consists in the fact that certain specific materials – superconductors – chilled to very low temperatures push from the inside a magnetic field. So if you put a superconductor in this field, will he hovered over him. But that’s not all – after two normal magnets repel it. It’s just that they can not be (at least try to make the most) stable set. Always one escapes. But the board Lexus comes to another physical phenomenon – the freezing of the magnetic field.
It turns out that being a single crystal superconductor bonds in its interior magnetic field. It is “locked” in those places where the lattice has some defects. As a result, the mutual position of the magnet and superconductor is fixed and even after precipitation out of balance these two objects are returned to their previous position. And the bigger the pressure on the superconductor, the relationship becomes more stable.
Fig. Lexus / YouTube
And that’s what was needed skilled in building the levitating board. Similar technology is used in Japanese trains, magnetic – one of them in April this year broke the record reaching a speed of 603 km / h. As a superconductor used for the boards or YBCO crystal material consisting of yttrium, barium, copper and oxygen. This so-called high-temperature superconductors – the name of a perverse, because it means that their properties at cooling the material gains to “only” about -200 degrees Celsius. Therefore sufficient to cool the liquid nitrogen, which is cheap and easy to use.
board built into the two superconductors disposed on both ends thereof – it is clear that the structure is a constriction in the middle. Coming out of the “smoke” is not a special effect, and the result of evaporation of liquid nitrogen.
But the superconductors themselves are not enough – you need more magnets, which field can repel board. And here comes the problem, because levitating board can only move along a track built with these magnets. Lexus built a skate park so special. What we see on film is a structure made of wood painted to resemble concrete. In specific places under the wood was hidden magnetic tracks – just one board can move. The rest of the skatepark is only a supplement intended to make an impression on the audience. In the end, we expect that, like Marty McFly, we will be able to ride as we are encouraged.
Also in the advertising scene, where the board is going right on the water is a little far-fetched – a layer of water can be a few millimeters here, because right under it must be hidden magnets.
Anyway – managed to build a flying board. It is true that years it for 10-20 minutes, because then you have to add liquid nitrogen and wait until they start nadprzewodzić superconductors. But there is nothing to cling – the effect was achieved.
In the advertising board is testing professional skater Ross McGouran. “Tests” is a good word, because riding on this item is extremely difficult. You have to realize that the only friction to which it is subjected to board the air friction that at these speeds is negligible. So you can not normally turn – tilt to one side causes escaping boards under his feet. Twists in the halfpipe that we see in the film is the result of zakręcającego track hidden under the surface, and the board holds a strong magnetic field.
Fig. Lexus
The tester board of The Verge journalist writes that it is impossible normal driving – siding with the front of the board makes it begins to rub the ground. You have to stand in the middle, so there is no way to go differently than standing on one leg.
So what? Profession? Rather magic is channeled advertising in our expectations and dreams. But also proof that dreams drive the development of technology. In the book, “Profiles of the Future” by Arthur C. Clarke formulated three famous laws on technology.
1. When a respected and venerable scientist says that something is possible, almost certainly right. When he says that something is impossible, probably wrong.
2. The only way to discover the limits of the possible is their light crossing and entry impossible.
3. Any sufficiently advanced technology is indistinguishable from magic.
Virtually all of them relate to constructed for Lexus deskolotki. Do we believed that in 2015 – when the action takes place after the movie “Back to the Future II” – will be able to see the real levitating deskolotkę? Probably not. Now it may seem to us that it was “only” a masterful marketing campaign, but it is worth considering what this technology could be useful to us in everyday life. Maybe levitation carts in furniture stores or major magazines? Impossible? This re-read Clarke’s first law.
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