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00:00:03

light is the energy that we can see,

00:00:06

our eye sees in the range from

00:00:08

violet to red,

00:00:09

so our picture of the world depends on the

00:00:12

physical properties of the substance and its

00:00:14

interaction with light in the optical

00:00:16

range,

00:00:17

so if we saw ultraviolet

00:00:19

radiation, then glass would not seem

00:00:22

transparent to us because ultraviolet is not

00:00:24

penetrates through glass and the world in

00:00:26

infrared light would look completely

00:00:29

unusual. Where does

00:00:31

light come from here? It is impossible to answer this

00:00:34

question unambiguously. On the one hand, light can be

00:00:37

considered as

00:00:38

electromagnetic waves. On the other hand,

00:00:40

light is a stream of particles;

00:00:42

particles of light are called photons; they

00:00:45

have their own energy and 0 mask

00:00:50

life that our atom consists of a nucleus and

00:00:53

electrons but much more watami

00:00:56

free spaces

00:00:58

if our saw so big and big

00:01:01

kill or two baby size good

00:01:04

in his stomach

00:01:05

except these are tiny grains of sand on the willow

00:01:10

[music]

00:01:12

when I find out what’s in the atoms tash but for the

00:01:16

empty space he will think through such a

00:01:19

holey photon there will fly with such a one and

00:01:23

everything in the world should be,

00:01:27

well, for some reason it’s not so, but all because

00:01:32

when a photon passes through the ports, it

00:01:35

definitely needs to take an electron and

00:01:37

move its slimy energy

00:01:41

level to a higher one high and the difference between the

00:01:44

levels is small and then strong, then it

00:01:48

easily transfers an electron but is immediately

00:01:50

absorbed because of this, light does not pass

00:01:54

through

00:01:55

because this is how atoms of any

00:01:58

opaque object work, how does light

00:02:01

pass through a transparent object, it’s

00:02:03

just that transparent atoms have a very large

00:02:07

distance between the energy levels

00:02:10

so he tries to estimate the electron

00:02:13

level higher, but he

00:02:15

can’t do anything, the photon gets bored and

00:02:19

moves on until he passes through all the atoms and

00:02:22

through the

00:02:23

general visiting and organic circulation, everything

00:02:27

harrows assage except for the electrons packed

00:02:30

here, it also fluctuates and the molecules themselves all

00:02:33

fly back and forth your eggs and changing

00:02:37

such an obstacle course

00:02:39

madonna is very difficult to pass but I

00:02:43

refuse sunlight or the light of a

00:02:46

table lamp these are electromagnetic

00:02:48

waves we catch

00:02:50

them with the help of receptors in the retina of

00:02:52

our voice or thus we receive

00:02:55

information about the world around us the

00:02:59

visible light of a light beam depends on the

00:03:02

purity of the shaft and can change from

00:03:04

violet to red, surprisingly, but

00:03:08

it would seem that the simplest white ray

00:03:11

actually consists of electromagnetic

00:03:13

waves of several frequencies, that is, from rays of

00:03:16

all visible colors, this is easy to

00:03:19

verify if you pass it through

00:03:21

glass, we can observe the same effect

00:03:25

after rain

00:03:26

when the rays of the sun are refracted in

00:03:28

droplets of water that have not had time to fall, so a

00:03:31

rainbow appears remember the arrangement of

00:03:34

colors in rads and it is very easy to just

00:03:37

learn a saying in which the first letter of

00:03:40

each service indicates the

00:03:42

corresponding color every hunter

00:03:46

wants to know where the pheasant sits I

00:03:58

got it and it turned out in the best possible way

00:04:01

first of all this I managed to

00:04:03

repeat it all, you’re just dreaming,

00:04:07

forgive me, who are you and why am I dreaming

00:04:11

and I’m a Danish physicist Nils for now they don’t want

00:04:14

to make fireworks

00:04:15

and I’m just about to receive a Nobel Prize

00:04:18

for research and there they are with the exception

00:04:21

of a colleague at night nice new and here

00:04:25

sure try to ride to

00:04:29

know about the atom from the mind, it consists of a nucleus and

00:04:32

electrons that revolve around

00:04:34

it in orbits, it was like planets around

00:04:36

the sun, but can it be about that with such a

00:04:40

light source, of course,

00:04:42

when an atom receives additional

00:04:44

energy, part of it receives an electron or

00:04:48

jumps to a higher orbit, but

00:04:50

it can stay there it does

00:04:53

n’t work at all, after a few

00:04:55

moments the electron returns back, the

00:04:58

excess energy is given off in the form of

00:05:01

electromagnetic waves, that’s right,

00:05:04

what color will the wave be that the electron will study,

00:05:07

it depends on the substance,

00:05:10

because atoms of different substances

00:05:14

have electrons in different orbits, and well, of

00:05:18

course, I remember

00:05:23

where it comes from light and atoms and when an

00:05:26

atom receives additional energy from

00:05:29

heating or from a collision with another

00:05:32

atom, part of this energy is received by an electron and

00:05:36

jumps to a higher orbit and

00:05:38

after which the electron falls again into its

00:05:42

orbit and this received energy is

00:05:44

released back but in the form of light by

00:05:47

this a particle of light is called from the fat

00:05:51

background; in normal radiation, electrons

00:05:54

jump at different times into different orbits

00:05:56

and emit different photons in different

00:05:59

directions; such radiation is called

00:06:03

spontaneous; each photon

00:06:05

individually is too weak to cause

00:06:08

any harm;

00:06:09

therefore, scattering in different directions, they are

00:06:12

practically safe

00:06:13

and if you collect these photons in a beam,

00:06:16

one day the great ancient scientist Archimedes

00:06:19

conducted such an experiment,

00:06:21

he distributed mirrors to the soldiers and ordered them

00:06:24

to focus sunlight on enemy ships

00:06:28

[music]

00:06:32

and while the atoms

00:06:35

spontaneously emit photons in different

00:06:37

directions, the radiation turns out to be weak if the

00:06:41

photons are the same color and fly in On the

00:06:44

one hand, the power of such

00:06:46

radiation will be much greater; before this, it is

00:06:49

necessary for all the electrons to temporarily

00:06:52

jump into the same orbit,

00:06:54

which means you just need to train these

00:06:57

electrons; you don’t need to address anyone.

00:07:01

Scientists have discovered that in some

00:07:03

crystals, electrons

00:07:07

linger for some time before returning to their orbit time in the

00:07:09

same orbit and still the photons

00:07:14

scatter in different directions, and for

00:07:16

repeated ones to fly in the same direction, it is

00:07:19

enough to direct them to the crystal better than the

00:07:21

same color that its electrons emit

00:07:24

and the photons of this beam

00:07:26

will take photons from the crystal with them

00:07:29

and therefore there will be a

00:07:32

very powerful beam of light comes out,

00:07:35

such radiation is called forced.

00:07:40

Today lasers are used not only in

00:07:43

powerful laser guns, but also for more

00:07:45

peaceful purposes,

00:07:46

lasers are used instead of a scalpel and in

00:07:48

medicine to read a bar code at the

00:07:50

checkout to arrange a laser show or measure the

00:07:53

distance to the moon in general almost

00:07:55

everywhere

00:07:56

Of course, such a useful invention

00:07:58

could not do without the Nobel Prize in

00:08:01

1964, and it was awarded to Soviet scientists

00:08:04

Nikolai Basov and Alexander Prokhorov, as

00:08:07

well as to the American physicist Charles Towns, for the

00:08:10

research that led to the invention of the

00:08:12

laser. In the modern world, we are accustomed to

00:08:15

constant illumination, smog, and all

00:08:18

we have to do is find what Some dark

00:08:20

corner we immediately strive to screw

00:08:23

in a light bulb and let in

00:08:26

more photons, but this was not always the case.

00:08:28

Our ancestors depended on natural

00:08:32

sources of light, so

00:08:34

they spent half their lives in

00:08:35

natural darkness, and of course

00:08:37

nature took care of

00:08:39

providing us with suitable organs of vision

00:08:42

in human essence. 130

00:08:46

million cells

00:08:47

react to themselves in bright light,

00:08:50

only about 7 million of them are

00:08:53

called cones, all other

00:08:57

cells are more than 120 million, these are the so-

00:09:00

called on each cells, we use them in

00:09:04

low light, to excite

00:09:06

the cone you need several hundred photons

00:09:09

from the rod, just one is enough

00:09:14

than

00:09:15

We have more than 120 million of these sticks. A mouse in the

00:09:19

dark should be able to see its head. Of course,

00:09:23

if you let the eye get used to the darkness,

00:09:26

when

00:09:28

the light turns off in a brightly lit room, then at first we

00:09:31

cannot distinguish anything;

00:09:33

after five minutes, the sensitivity of the

00:09:35

eyes increases by 30 percent

00:09:39

to completely it

00:09:41

will take about three more hours to get used to the darkness;

00:09:44

this process can be accelerated if you

00:09:47

breathe deeply and saturate the brain cells with

00:09:50

oxygen; vision in the dark

00:09:52

becomes faster; another option is

00:09:55

to wash the back of your head and face with cold water and

00:09:59

eat something, something with

00:10:03

vitamin A, for example, carrots. I don’t even

00:10:07

know how to choose; some animals,

00:10:14

due to difficult living circumstances,

00:10:18

are accustomed to relying not only on their

00:10:20

eyesight; for example, a shark that

00:10:24

spends most of its time in the dark

00:10:26

lacks visibility; it compensates for the lack of visibility with

00:10:29

stunning charm; the shark is very

00:10:33

sensitive to odors and is capable of

00:10:35

sensing prey at a considerable distance;

00:10:38

other inhabitants of the underwater world poo

00:10:42

use

00:10:44

special sensitive hairs on their

00:10:46

body for the same purpose; they can feel fluctuations in

00:10:49

water several tens of meters from the

00:10:52

source and other animals,

00:10:54

for example, some snakes, do not use

00:10:57

clouds. This is the ability

00:11:00

to distinguish objects in space with

00:11:02

different temperatures; it helps a lot to

00:11:05

navigate in complete darkness.

00:11:07

but perhaps the bat feels best at

00:11:10

night;

00:11:12

they emit a sound signal that is

00:11:15

reflected from surrounding objects and

00:11:17

returns back; the bat catches the

00:11:21

reflected waves;

00:11:23

they form a picture of the surrounding world

00:11:25

with almost the same accuracy as we do using

00:11:28

light; this method is called

00:11:32

echolocation

Description:

Анимационный сериал Смешарики 2D. Все любимые серии подряд: https://www.youtube.com/watch?v=S7GBVPeNYlE&list=PLeVA7eICJ6d04-zmSc7M1Z9E0OEaANvax ПИН-КОД (сезон гуманитарных технологий) - Все серии: https://www.youtube.com/watch?v=YCYYOMjZubA&list=PLeVA7eICJ6d3EyMDlsu9mDRAdnQAjOJVI Пин-код. Смешарики | Познавательные мультики для детей - 1 сезон: https://www.youtube.com/watch?v=fehjAHNJ36s&list=PL57197768B5DDD4D8 Пин-код. Смешарики | Познавательные мультики для детей - 2 сезон: https://www.youtube.com/watch?v=T_9m73boXHg&list=PLeVA7eICJ6d0LiK0uJbQRoIoTePZTobku Смешарики 2D. Все серии подряд | HD: https://www.youtube.com/watch?v=ZZgJ0QhOe44&list=PLeVA7eICJ6d1vzYh_SsxifcybiksP45D1 Смешарики Новые приключения : https://www.youtube.com/watch?v=RLpc6qcVe80&list=PLeVA7eICJ6d2SuuluqOfYXke_6YgAM-7_ Смешарики 3D. СПОРТ: https://www.youtube.com/watch?v=jXlLMLbtjlk&list=PLeVA7eICJ6d3Uw9cs9QL8gtvGw9ihWXgo Смешарики 2D. Азбука финансовой грамотности (Все серии подряд): https://www.youtube.com/watch?v=1yPm1j2Q5q4&list=PLeVA7eICJ6d2C8ExAG2XR4W6LFPYzSlXY Смешарики. Сборники: https://www.youtube.com/watch?v=hY6M8EudFYo&list=PLeVA7eICJ6d39pbQw_6uweL5m4N4L-r2A Смотрите также: Смешарики - Азбука здоровья https://www.youtube.com/watch?v=pMfeKQgfwTo Смешарики - Умный дом https://www.youtube.com/watch?v=jvtWyKYckI0 Смешарики 2D - Чистый спорт https://www.youtube.com/watch?v=oWfOqQkM5JM Смешарики - Шуша https://www.youtube.com/watch?v=T2tNCm7yPRE Смотрите также свои любимые серии про: Лосяша : https://www.youtube.com/watch?v=5JiRxH__bKc&t=3s Копатыча : https://www.youtube.com/watch?v=qileDls6BzI Карыча : https://www.youtube.com/watch?v=f7EbLyYrils Пина : https://www.youtube.com/watch?v=Q5UMgpWt0H0&t=25s Ёжика : https://www.youtube.com/watch?v=FXqeXbdJXhU&t=25s Бараша : https://www.youtube.com/watch?v=4fUUTQKBvLI Нюшу : https://www.youtube.com/watch?v=LP5SFh7jzwo&t=25s Кроша : https://www.youtube.com/watch?v=kVROlnKaPKg&t=25s Совунью : https://www.youtube.com/watch?v=hL4g59p9K6U&t=41s Подпишись на канал TVSmeshariki: https://www.youtube.com/c/smeshariki и ЖМИ НА КОЛОКОЛЬЧИК 🔔 Что такое свет? Это волна или же поток частиц? Откуда берется свет? Почему некоторые объекты прозрачны, а другие - нет? Почему свет может быть разного цвета? Это и многое другое расскажут вам любимые Смешарики. Лосяш подготовил очень много интересных рассказов для вас! Наука для детей - Смешарики Пин-Код - интересные факты о растениях, о технике, передаче информации, о человеке, о Земле, физических и химических явлениях. Наука для школьников может показаться скучной, но с эпизодами Пин-Кода от Смешариков учиться легко и интересно. Эпизоды из серий подойдут также и для маленьких детей. Ведь все научные факты сопровождаются занимательным анимационным видеорядом. Физика для детей от Смешариков - это весело и познавательно! Мы в социальных сетях! Группа Вконтакте: https://vk.com/smeshariki Мы в Инстаграм https://www.facebook.com/unsupportedbrowser Мы на Фейсбуке: https://www.facebook.com/unsupportedbrowser Мы в Одноклассниках: https://ok.ru/smeshariki Следи за нами в Твиттере https://twitter.com/TVSmeshariki Все мультклипы подряд https://www.youtube.com/watch?v=krRp7qbSF2M&list=SPeVA7eICJ6d0lUOAYM7o5aZvfkeHGxV0H Обучающий мультфильм для детей и взрослых. Главные герои «Смешариков» – непоседливый весельчак Крош, лиричный мечтатель Бараш, умный и робкий Ежик, любопытная кокетка Нюша, неуклюжий ученый Лосяш, невозмутимая спортсменка Совунья, гениальный изобретатель Пин, трудолюбивый садовод Копатыч и искрометный артист Кар-Карыч. В каждой серии эти забавные персонажи попадают в смешные ситуации, решают серьезные вопросы и познают мир вместе с маленькими зрителями. Удивительные приключения, добрый юмор и понятная ребенку философия – все это мультсериал «Смешарики», который теперь дети и их родители могут смотреть онлайн.

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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 "❗❓Наука для детей - Свет - что это такое? Как он возникает? Сборник | Смешарики Пинкод"?

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.