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Video tags
Subtitles
Russian
00:00:01
listen carefully to these sounds, they are00:00:08
strange, but in fact these are the voices of fish00:00:11
for communication, they really00:00:13
talk, the only thing is that these sounds are00:00:15
quite quiet to highlight and I want him00:00:18
under water, so they are not particularly audible, but00:00:20
experienced fishermen will confirm that they are a00:00:23
fact that fish are not us is a complete00:00:25
misconception and science is full of myths00:00:27
that wander from article to article from00:00:29
videos, it’s time to destroy00:00:32
some of them I’m participating in a project on00:00:34
roasting where we and other bloggers,00:00:36
together with the great scientists of the past,00:00:38
are destroying the myth and go to the site00:00:41
where you can see how they roast00:00:43
myths, it’s on technology, as well as a lot of00:00:45
fascinating content from my fellow00:00:47
bloggers, and in this issue I’ll briefly00:00:49
tell you what awaits you in the nanopro project, it’s00:00:51
hot and we’ll get rid of many myths00:00:54
from the world of physics, and how quite00:00:56
old ones, like the fact that a00:00:58
black hole can be created in a collider00:00:59
and a plane flies according to the school laws of00:01:01
physics, and with those that appeared relatively00:01:04
recently, the impossible recycling of garbage,00:01:06
special properties on products and00:01:08
space debris threatening the planet,00:01:11
where do these myths come from, due to a00:01:13
misunderstanding, the law of physics is difficult well,00:01:16
these are just marketing gimmicks00:01:18
like consoles on some00:01:20
companies try to raise the prestige00:01:22
of their products in this way, however, this is not always00:01:24
hidden behind super technology, but00:01:27
by the way, about everything in order, we’ll start with00:01:30
clematis one of the participants needs to00:01:32
fry whatever they’re into chemistry00:01:35
physics geography and also history,00:01:37
grammar of poetry, he even invented a00:01:39
helicopter, can you imagine the truth,00:01:41
the machine was intended only for00:01:43
lifting light measuring instruments and00:01:45
worked from a spring,00:01:46
but still, an00:01:48
old myth is connected with aircraft, firmly entrenched in physics,00:01:51
it’s about how an airplane flies and00:01:53
lift is generated,00:01:55
popular but not correct the explanation00:01:57
sounds like this: a section of the wing from above is00:02:00
convex, there the air travels a greater distance00:02:03
than from below and in the same time, so the00:02:05
air from above is stretched;00:02:07
its density drops and the pressure00:02:09
decreases; a pressure difference arises,00:02:12
which creates lift; in00:02:15
fact, everything is not quite so; the fact is00:02:17
that the air flow behind the wing there is no00:02:20
need to adjust only to the friends and the00:02:21
upper ones even overtake the lower ones, they00:02:24
close with a slight shift and the00:02:25
vacuum at the top arises for another00:02:27
reason,00:02:28
so let’s consider a wing that is flat at the bottom and00:02:31
curved at the top; the00:02:33
lower part of the flow calmly moves00:02:35
along the Karl strictly horizontally, but the00:02:37
upper flow cannot move horizontally after00:02:39
all, under it the bend of the wing goes00:02:42
down, as Aristotle said, nature does00:02:44
not like emptiness,00:02:45
the air begins to be drawn in there and at00:02:48
this stage two effects occur:00:02:50
firstly, with such drawing in, the air accelerates,00:02:52
which leads to irritation00:02:54
from above and the emergence of lift in00:02:57
airliners in landing mode at a00:02:59
speed of At 250 kilometers per hour, the00:03:01
flow over the wing accelerates to as much as 450,00:03:05
so if you see in a movie how someone00:03:07
flies while grabbing the wing, you know00:03:09
he has a lot of strength. Secondly, since the00:03:11
air has acquired a downward momentum, then according to the00:03:13
law of conservation of momentum, something must00:03:16
acquire an upward impulse.00:03:18
just our wing and to be honest, this is also a00:03:20
simplified explanation that releases a lot of00:03:23
details, but it is closer to the real00:03:25
state of affairs and, most importantly, does not contain any00:03:27
misconceptions. Let’s return to Lomonosov,00:03:30
as a comprehensively developed person, he00:03:32
easily roasts myths about health00:03:34
and medicine, the next myth about this she is on00:03:37
the teeth, a group of Japanese researchers00:03:38
grew real new teeth, they took the00:03:42
embryonic tissue from which00:03:44
teeth develop and divided it at the nano-level,00:03:46
separately epithelial cells, which00:03:49
form, for example, the surface of the skin and00:03:50
some internal organs, and separately00:03:53
mesenchymal tissue, this is a type of00:03:55
stem, and then they combined it again,00:03:57
resulting in a full-fledged but they00:03:59
made many artificial tooth embryos,00:04:01
kept them for about a week in a00:04:03
special nutrient solution and then00:04:06
transplanted them to the place of the extracted tooth.00:04:07
After 36 days, the experimental subjects showed00:04:10
new teeth,00:04:11
and after 49 days they could bite and00:04:14
gnaw on their own, but the lucky ones were00:04:16
laboratory mice.00:04:18
people patients the experiment was carried out00:04:20
10 years ago and it never got to clinical trials00:04:23
so the technology for teeth is00:04:25
too crude and more a myth00:04:28
than the truth but if you grow new ones it is00:04:31
still quite difficult to protect00:04:32
existing ones much in reality tooth enamel00:04:35
consists mainly of hydroxyapatite crystals00:04:38
that is, in our mouth we have real00:04:40
natural ceramics, but there are no cells there and it is00:04:45
much more difficult to restore a tooth, unlike for example bones, which is why there are00:04:47
fillings,00:04:49
they are made from amalgam, this is an alloy of00:04:51
glass ionomer through the teeth, and a prosthesis00:04:54
is made from ceramics or metal,00:04:56
even gold for example,00:04:58
many different materials are used, but each has00:05:00
serious drawbacks; you00:05:02
encounter mercury in T-shirts; composite fillings00:05:04
do not protect well from temperature changes and the00:05:06
patient often suffers if the light is something00:05:09
cold; in general, the current methods of protection, to00:05:11
put it mildly, are not very good, but00:05:13
you can play with any traditional materials00:05:16
if add nanoparticles to them,00:05:18
for example, if you take nanoparticles of00:05:20
hydroxyapatite and introduce hard00:05:22
dental tissues, for example, tubules, then we will reduce00:05:25
sensitivity in Russia, not yet, but in the00:05:27
West,00:05:29
toothpastes and rinses with such00:05:32
nano particles are already appearing on the shelves and this is not a marketing00:05:35
ploy if the founder rubs00:05:36
or rinses the teeth then they are covered with a00:05:39
so-called biomimetic film,00:05:41
which is exactly the same in structure as our00:05:43
MA.00:05:44
and this process is not chemical but physical,00:05:46
so the resulting coating is almost not00:05:49
damaged from the very first bite because the00:05:51
film molecules are tightly bound to the00:05:53
enamel molecules. Slow nanotechnology is already00:05:56
allowing us to reach a new level of00:05:57
working with teeth,00:05:58
whereas before it was like00:06:00
filling up holes in the wall with a brick now00:06:03
it’s like treating the first cracks in a wall;00:06:05
nanocomposites; thanks to science for being00:06:08
able to save us from truly00:06:09
terrible things; moving on; Nikola00:06:12
Tesla; myths are being fried; she’s on00:06:14
robots and on a plaster; the depth of his00:06:17
thoughts is still amazing; the00:06:19
entire00:06:21
planet without wires has passed a hundred years, the00:06:23
energy on the planet is already00:06:25
much better, but other problems have appeared,00:06:27
for example, widespread pollution of the atmosphere of00:06:30
water and soil, but the main fault00:06:32
lies with cars and plastic00:06:34
tycoons ah, this is an absolute fallacy 200:06:37
million tons of carbon dioxide emissions00:06:39
and 92 million tons garbage underfoot00:06:42
arises during the production of clothes,00:06:45
who is the record holder for pollution00:06:46
and how much water is used, about 8000:06:49
billion tons, an insane amount, so00:06:52
why not stop making new00:06:53
clothes and the manufacturer, for example, from00:06:55
garbage, it’s not that there is a myth on the rock with the00:06:58
misconception that many things cannot be00:07:00
made from recycled materials old, but you ca00:07:02
n’t imagine how far technology has come00:07:04
now for the production of clothing, it’s possible to00:07:07
recycle even a plastic bag, so00:07:09
your bag can easily00:07:12
become someone’s fashionable hat; another example is a00:07:15
group of researchers from Hong Kong who00:07:17
have learned to process cashmere, a very00:07:19
expensive warm and pleasant material, but00:07:22
incredibly demanding for care,00:07:23
scientists have developed a spray of00:07:25
mineral nanoparticles, that is,00:07:28
titanium oxide,00:07:29
spray, leave in the sun00:07:31
for 24 hours, a chemical00:07:34
reaction begins and an electric current appears00:07:36
that cleans cashmere from dust, dirt and00:07:39
even bacteria, the technology has already been patented by a00:07:42
large clothing brand and tandem and00:07:44
curling company who owns different brands of00:07:46
luxury items entered into a partnership00:07:48
to test the technology from fabric to00:07:50
fabric, nothing like this has ever been done by anyone before,00:07:53
they want to learn how to00:07:55
separate00:07:56
polyester and cotton from each other on an industrial scale, the main components of00:07:59
popular types of clothing and produce00:08:01
new fabrics and things from them, and adidas00:08:03
is developing an indestructible 3d super00:08:05
material from which you can make a00:08:07
new thing or use it to00:08:10
repair a damaged one. This is possible if the00:08:12
material is so universal that it00:08:15
can be used when printing on a 3d00:08:17
printer again and again. You can00:08:19
argue that plastic for 3d printing is00:08:21
almost impossible to recycle because it00:08:24
now belongs to categories 7 but only00:08:26
now the adidas project on super material has00:08:28
already been supported by the European Commission because00:08:31
individual enthusiasts are able to00:08:33
invent suitable 100:08:34
vodka plastic for 3D printing so00:08:36
imagine the question of where you got such00:08:38
fashionable clothes someday we will00:08:40
answer00:08:41
at home printed of course without Albert00:08:43
Einstein our company was would be incomplete00:08:45
and who else but him to fry the myths about00:08:47
ice cream but more precisely in the cold before if00:08:51
such but about everything in order in00:08:53
Amsterdam they came up with a programmable00:08:54
wine called for a new one to taste this is the00:08:57
usual merlo but as soon as you put it in the00:08:59
microwave it becomes00:09:01
cabernet pinot noir malbec00:09:03
or almost anything else in this wine00:09:05
there are capsules ranging in size from 1 to 10000:09:08
micrometers which, when opening, change color, the taste and00:09:11
aroma of the wine costs such a magical00:09:13
pleasure only 20 euros, but do not rush to00:09:16
buy for the most attentive,00:09:18
the price tags say this is speculation berlov00:09:21
bottles are real but here fake00:09:25
and placebo nanoparticles, that is, if the taste changes not because00:09:27
of nanoparticles but only due to00:09:30
our perception, this is00:09:31
such a cruel marketing joke, there are00:09:33
still a lot of examples like this, but00:09:36
there is a product that is really needed,00:09:38
this is necessary ice cream, the manufacturers promise a00:09:41
richer and brighter taste,00:09:43
explains because the ice crystals in it are00:09:45
much smaller, which means that when they are given,00:09:47
you quickly begin to feel the taste of00:09:49
sugar and fats,00:09:50
however, this is also nothing more than just a00:09:52
marketing ploy00:09:54
and the most natural myth, and that is why00:09:56
the size of the crystals depends on many00:09:58
parameters, including the speed of00:10:00
freezing than faster, the smaller the00:10:02
crystals,00:10:04
ice cream manufacturers use liquid nitrogen,00:10:06
this is minus 196 degrees Celsius;00:10:08
the crystals really turn out to be very00:10:10
tiny, about 15 micrometers in size,00:10:12
so the ice cream needs to be00:10:14
really very tender and tasty, but it’s00:10:17
just not tastier and more tender than usual, because00:10:19
its crystal size is not much00:10:21
more than 30- 40 micrometer00:10:23
and, if desired, you can make it smaller,00:10:25
only the taste and this will not add, so00:10:28
traditional ice cream, in a sense,00:10:29
also needs the only thing is that due to strong00:10:32
temperature changes during storage,00:10:34
ice crystals can grow,00:10:35
sleep on ice cream is cunningly stored00:10:38
at minus 70 degrees so they are not afraid of this,00:10:42
but in such conditions even ordinary ice cream00:10:44
will retain all its00:10:46
taste, so in ice cream but00:10:48
no more than in ordinary ice cream, but perhaps the00:10:51
prefix in the name thanks to Einstein,00:10:53
many myths have appeared,00:10:54
take at least black holes 5 mines and the general00:10:57
theory of relativity predicted and the00:10:58
existence of the main misconceptions about them,00:11:01
I have already talked about them, but there is another one00:11:03
that lies on a completely different plane. The00:11:05
large hadron collider has been working00:11:07
for a long time, but there were so many fears that00:11:09
mini black holes could appear, it seems00:11:13
like everyone is alive and well, so this is a00:11:14
misconception00:11:15
but here's how it arose first you need to00:11:17
note a black hole you can make it out of00:11:19
anything just compress an object to a00:11:22
size smaller than some political00:11:24
land to a human walnut00:11:26
billions of times smaller than an electron even the00:11:29
proton has such a small size but it00:11:31
still exists and who knows Aries00:11:33
In the collider, some00:11:35
heavy but small particles appear; then they00:11:38
really can become mini black holes,00:11:40
but they wo00:11:42
n’t pose any danger for at least two00:11:44
reasons: firstly, thanks to00:11:47
Hawking radiation, most likely black holes can00:11:49
evaporate and the smaller they are, the higher the00:11:51
frequency of the radiation and the intensity of00:11:54
evaporation is greater; miniature black holes00:11:56
completely evaporate in a fraction of a second and00:11:58
disappear without any harm,00:12:00
and secondly, even if we are mistaken with00:12:02
evaporation, then the mini black hole still00:12:04
carried the whole earth waiting for it because it is too00:12:06
tiny and attracts everything around it00:12:09
weaker and there it will be fall through00:12:11
the earth and then oscillate around its center,00:12:14
but in a second it will absorb about 6600:12:17
thousand protons and neutrons and the mass00:12:20
will grow very slowly, so00:12:22
slowly that it will gain a kilogram00:12:24
only after three trillion years even00:12:26
the universe exists less so even00:12:29
if there are black holes in the collider and00:12:30
they appear tiny00:12:32
and completely harmless, and in the space00:12:35
theme there are a lot of myths, for example, the00:12:37
space elevator is fried by00:12:40
Mendeleev, yes it sounds strange, but believe me,00:12:42
without good materials in which a chemist is00:12:45
well versed,00:12:47
it is difficult to imagine space exploration,00:12:48
we will deal with other myths, for example, in00:12:51
asteroid meteorites and other small ones bodies00:12:53
entering the atmosphere00:12:54
heat up to insane temperatures and00:12:57
sometimes even burn completely00:12:59
before reaching the surface,00:13:00
we associate this with friction and air, but00:13:02
it turns out this is a misconception,00:13:04
friction has nothing to do with it when bodies enter the00:13:07
atmosphere with enormous speed tens of00:13:09
times faster than the sound speed, a00:13:11
shock wave is formed in front of them00:13:13
there is a sharp decrease in the00:13:15
speed of the oncoming flow, but at the same time the00:13:17
pressure increases sharply and00:13:19
the temperature turns out that the meteor itself is not00:13:21
blown by a high-speed flow, it00:13:24
is in hot, slow air,00:13:26
how hot is it for an asteroid to fly00:13:29
30 times faster than sound, this is a trifle,00:13:31
then behind the shock wave the temperature00:13:34
increases00:13:35
as much as 176 times as a result, it becomes00:13:38
surrounded by hot plasma00:13:40
which evaporates it with furious force,00:13:42
the only question is how does it00:13:44
heat up the air so quickly on its own, this is00:13:47
called adiabatic heating of gas00:13:49
if considered at the microscopic00:13:51
level, the shock wave hits the molecules very hard00:13:54
and gives them00:13:56
additional speed and what the greater the00:13:57
speed of molecules,00:13:58
the greater the temperature, so now you00:14:00
know another way to boil a kettle,00:14:02
just move it very quickly, but00:14:04
perhaps the biggest myth is associated with00:14:06
space debris, supposedly because of it there is00:14:08
no more space left in orbit; it will collect00:14:11
all the satellites and all that will be left of them is00:14:13
horns and legs of fear adds more00:14:15
scenarios like from the movie gravity when00:14:17
two colliding satellites generate00:14:20
clouds of fragments00:14:21
they hit new satellites and so on00:14:23
and so forth this is called00:14:25
Koestler syndrome and in 2009 there was even such a00:14:28
collision but fortunately the domino principle did00:14:30
not start then and in fact, everything is00:14:32
not so sad, there are00:14:34
about 670 thousand objects rotating around the earth ranging in size from 100:14:38
to 10 centimeters, it seems like a lot, but if00:14:41
they are evenly distributed over the entire00:14:42
surface of the planet, each object00:14:45
will have 76 square kilometers of00:14:47
area and if I compare with Moscow, there00:14:49
will be only00:14:51
eleven twelve such small00:14:53
pieces, but space is00:14:55
much larger and they all fly at00:14:57
different altitudes so the distance between00:14:59
them is huge; moreover, at an altitude of even00:15:01
600 kilometers there is a very weak00:15:04
atmosphere and due to resistance00:15:06
the satellite will lose speed and will00:15:08
fall in 10 years on the ground, and at an altitude of00:15:10
two hundred to three hundred kilometers, satellites00:15:12
generally live for several months, so00:15:14
low Earth orbits can be said to00:15:17
be self-cleaning, the danger of space00:15:19
debris is still a little exaggerated,00:15:22
especially in distant orbits,00:15:23
but there is no reason to believe that in the00:15:25
future it will not worsen, so about00:15:27
the future of the planet still,00:15:29
you need to think and preferably now,00:15:31
of course, the list of myths can be continued00:15:33
almost endlessly, and if you want even00:15:36
more revelations, go to the site00:15:38
for roasting there, my colleagues have00:15:40
prepared a lot of interesting things for you,00:15:41
and of course, don’t stop00:15:44
thinking critically about learning new things, and then00:15:46
you will be mistaken less and00:15:48
less and that's all until we meet again00:15:54
[music]Description:
Проект НАНОПРОЖАРКА: https://new.nanorazborka.ru/ Разрушаем самые интересные мифы и заблуждения из мира физики! Содержание: 1:47 Подъемная сила самолета 3:35 Нанозубы 6:28 Вечные вещи 8:48 Наномороженое 10:53 Черные дыры в коллайдере 12:49 Метеориты 14:05 Космический мусор Я в VK: https://vk.com/pobedos Я в Instagram: https://www.facebook.com/unsupportedbrowser Полезные ссылки и источники: Голоса рыб: https://www.youtube.com/watch?v=POITH02VVrw Подъемная сила самолета (подробнее): https://habr.com/ru/articles/438854/ Нанозубы (ENG): https://www.science.org/news/2009/08/researchers-grow-new-teeth-mice Восстановление эмали гидроксиапатитом: https://habr.com/ru/articles/403731/ Одежда из пакетов: https://vimeo.com/168017366 Обработка кашемира: https://www.youtube.com/watch?v=NJZBYY-KbI4 Вещи из 3D-принтера: https://www.adidas-group.com/media/filer_public/16/85/1685c509-0b82-463b-b6d3-162a7c0bf7ab/factsheet_sport_infinity_en.pdf Нановино: https://nextnature.net/shop/nano-wine Наномороженое: https://www.idfa.org/docs/default-source/events-d/ice-cream-technology-conference/2015/syed-rizvi---presentation.pdf Черные дыры в коллайдере: http://www.modcos.com/articles.php?id=100 О метеоритах (ENG): https://arxiv.org/ftp/arxiv/papers/1805/1805.07842.pdf Спутники онлайн: https://stuffin.space/?intldes=1998-067A&search=iss О космическом мусоре: https://iz.ru/852256/mikhail-kotov/kosmicheskii-musor-vokrug-zemli-letaiut-tysiachi-opasnykh-obektov
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http://unidownloader.com/ website is the best way to download a video or a separate audio track if you want to do without installing programs and extensions.
The UDL Helper extension is a convenient button that is seamlessly integrated into YouTube, Instagram and OK.ru sites for fast content download.
UDL Client program (for Windows) is the most powerful solution that supports more than 900 websites, social networks and video hosting sites, as well as any video quality that is available in the source.
UDL Lite is a really convenient way to access a website from your mobile device. With its help, you can easily download videos directly to your smartphone.
Which format of "Прожарка научных мифов: самолеты, коллайдер, нанотехнологии, космический мусор. [СПЕЦВЫПУСК]" video should I choose?
The best quality formats are FullHD (1080p), 2K (1440p), 4K (2160p) and 8K (4320p). The higher the resolution of your screen, the higher the video quality should be. However, there are other factors to consider: download speed, amount of free space, and device performance during playback.
Why does my computer freeze when loading a "Прожарка научных мифов: самолеты, коллайдер, нанотехнологии, космический мусор. [СПЕЦВЫПУСК]" video?
The browser/computer should not freeze completely! If this happens, please report it with a link to the video. Sometimes videos cannot be downloaded directly in a suitable format, so we have added the ability to convert the file to the desired format. In some cases, this process may actively use computer resources.
How can I download "Прожарка научных мифов: самолеты, коллайдер, нанотехнологии, космический мусор. [СПЕЦВЫПУСК]" video to my phone?
You can download a video to your smartphone using the website or the PWA application UDL Lite. It is also possible to send a download link via QR code using the UDL Helper extension.
How can I download an audio track (music) to MP3 "Прожарка научных мифов: самолеты, коллайдер, нанотехнологии, космический мусор. [СПЕЦВЫПУСК]"?
The most convenient way is to use the UDL Client program, which supports converting video to MP3 format. In some cases, MP3 can also be downloaded through the UDL Helper extension.
How can I save a frame from a video "Прожарка научных мифов: самолеты, коллайдер, нанотехнологии, космический мусор. [СПЕЦВЫПУСК]"?
This feature is available in the UDL Helper extension. Make sure that "Show the video snapshot button" is checked in the settings. A camera icon should appear in the lower right corner of the player to the left of the "Settings" icon. When you click on it, the current frame from the video will be saved to your computer in JPEG format.
What's the price of all this stuff?
It costs nothing. Our services are absolutely free for all users. There are no PRO subscriptions, no restrictions on the number or maximum length of downloaded videos.