How the Eye Works Animation - How Do We See Video - Nearsighted & Farsighted Human Eye Anatomy
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- Опубликовано: 2 окт 2024
- The eye is the organ of sight and is shaped as a slightly irregular hollow sphere. Various structures in the eye enable it to translate light into recognizable images. Among these are the cornea, the lens, and the retina.
Light first passes through the cornea, a clear dome-like structure covering the iris, or colored part, of the eye. The cornea bends, or refracts, the light onto the lens. The light is then refracted a second time while passing through the lens, finally focusing on the retina. The retina is the light sensitive part of the eye. Impulses travel down the optic nerve to the occipital lobe of the brain, which then interprets the image in the correct perspective.
The shape of the eye is very important in keeping the things we see in focus. If the shape of the eye changes, it affects a person’s vision.
Normally, light is precisely focused onto the retina at a location called the focal point. A nearsighted eye is longer from front to back than a normal eye causing light to be focused in front of the retina instead of directly onto it. This makes it difficult to see objects that are far away. Glasses with concave lenses are used to correct nearsightedness. The concave lens focuses light back onto the focal point of the retina.
Farsightedness occurs when the length of the eye is too short. Light is focused at a point behind the retina, making it difficult to see objects that are up close. A convex lens is used to correct farsightedness because it directs the focal point back onto the retina.
How Your Eyes Work
When light rays reflect off an object and enter the eyes through the cornea (the transparent outer covering of the eye), you can then see that object. Rods and Cones in the retina
The cornea bends, or refracts, the rays that pass through the round hole of the pupil. The iris (the colored portion of the eye that surrounds the pupil) opens and closes, making the pupil bigger or smaller. This regulates the amount of light passing through.
The light rays then pass through the lens, which changes shape so it can further bend the rays and focus them on the retina. The retina, which sits at the back of the eye, is a thin layer of tissue that contains millions of tiny light-sensing nerve cells. These nerve cells are called rods and cones because of their distinct shapes.
Cones are concentrated in the center of the retina, in an area called the macula. When there is bright light, cones provide clear, sharp central vision and detect colors and fine details.
Rods are located outside the macula and extend all the way to the outer edge of the retina. They provide peripheral or side vision. Rods also allow the eyes to detect motion and help us see in dim light and at night.
These cells in the retina convert the light into electrical impulses. The optic nerve sends these impulses to the brain, which produces an image.
The human eye is an organ that reacts to light and has several purposes. As a sense organ, the mammalian eye allows vision. Rod and cone cells in the retina allow conscious light perception and vision including color differentiation and the perception of depth. The human eye can distinguish about 10 million colors and is possibly capable of detecting a single photon.
Similar to the eyes of other mammals, the human eye's non-image-forming photosensitive ganglion cells in the retina receive light signals which affect adjustment of the size of the pupil, regulation and suppression of the hormone melatonin and entrainment of the body clock.
Visual perception is the ability to interpret the surrounding environment by processing information that is contained in visible light. The resulting perception is also known as eyesight, sight, or vision (adjectival form: visual, optical, or ocular). The various physiological components involved in vision are referred to collectively as the visual system, and are the focus of much research in Linguistics, psychology, cognitive science, neuroscience, and molecular biology, collectively referred to as vision science.
Light entering the eye is refracted as it passes through the cornea. It then passes through the pupil (controlled by the iris) and is further refracted by the lens. The cornea and lens act together as a compound lens to project an inverted image onto the retina.
The retina consists of a large number of photoreceptor cells which contain particular protein molecules called opsins. In humans, two types of opsins are involved in conscious vision: rod opsins and cone opsins. (A third type, melanopsin in some of the retinal ganglion cells (RGC), part of the body clock mechanism, is probably not involved in conscious vision, as these RGC do not project to the lateral geniculate nucleus but to the pretectal olivary nucleus.) An opsin absorbs a photon (a particle of light) and transmits a signal to the cell through a signal transduction pathway, resulting in hyper-polarization of the photoreceptor. Rods and cones differ in function.
It's so dumb how are schools depend on memorizing and us students search ourselves for knowledge.
true
so true, just so dumb. I don’t know whether, if they know they are teaching to a kind of species "that can think.”
hell of dumbness, after the corona break, they don’t look like, they give a shit regarding our health.
I used to be very fond and respectful towards teachers, serously,
but, the hell of that, I don’t care a hell now.
I am seriously irritated.
Lol,our teacher shows us that vid,then explains it himself,if we didn’t get.Why doesn’t he just explain himself?!
School brainwashed our parents and we have no escape.
@@wbmw450It's all about the money. Poor nations are paying for being poor with their lives of their own citizens. Where I live in US the injections are available to everyone in our state. And now they are on a witch hunt for the extremely rare blood clots that really have happened. But only one in a million and they weren't ALL fatal...
Learning how our eyes work while our eyes are working at the same time to look at how our eyes work.
Very interesting! I would love to see a video on the brain part of vision as well. It’s insane how much of vision is in the brain!
Human Memory stored exactly like RAM in a computer and once chips are placed into the brain everything will change.
❤
Welcome, my long eyed and short eyed peeps.
greetings, my eyes are l o n g
Im trying to do research on the eye so that I can come up with a solution for this without needing glasses...
Also my eyes are red and Id like to know why...
Im not a doc though
I too, am researching the eye so I will no longer be in need of those darn glasses.
@Ravii Redmiii OMG you going to look creepy
@@MasterRons177 your eye Will look ok in the inside but the shape of your eye shape is longer or shorter
Praise the Lord for his wonderful creation. Amen 🙏
I normally do not give youtube comments. This definitely deserves a like and a comment. Thanks for the simple and clean explanation.
True ❤️❤️
That was excellent! Good work! I learned more about the eye in 3 minutes and 22 seconds with your video than I did from a whole hour in science class back in the day...quite a way back.
I've got some oceanfront property you might be interested in! Seriously, read my comments!
Does the brain know what is upside-down? I read about a psychologist back in the day that wore glasses that flipped images upside-down on purpose, and in 12 or so days his brain allowed him to perceive it as right side up.
the brain is always adapting. plasticity plays a key role. your brain is doing its best to maintain cohesion with reality.
Probably gravity that lets the brain know which way is down and up
Appreciate Video clip! Excuse me for the intrusion, I would love your thoughts. Have you considered - Ciyackorn Lothario Fraternity (erm, check it on google should be there)? It is a smashing exclusive guide for finding the secret to improve your eyesight naturally without the hard work. Ive heard some interesting things about it and my old buddy Taylor after a lifetime of fighting got amazing success with it.
I heard a Doctor say that if a baby is blindfold at birth and the blindfold is then removed, after a certain amount of time the baby will never be able to see. And the reason has to do with the fact that man, with his large brain needed to be as efficient as possible so childbirth would be possible. the software comes AFTER birth for us, as opposed to a horse that does everything it ever does within minutes of its birth.
his name is Ivo Kohler... when he took the glasses off, he saw upside down again... after about a week he readjusted and was able to see right-side-up
2:52 I knew it.......My massive brain is pushing on the back of my eyes...
Hey everyone, the greatest success that i've ever had was by following the Great Gazer Fix (just google it) - I found it the no.1 info that I have ever followed.
@@ahmedramis7541 Actually, the eyes are not connected to the brain. They ARE the brain. Direct outgrowths of the brain itself.
my body has loads of space because my brain doesnt take up much space
POV: You searched how does vision work at 1am
Bro last time I saw a cat playing on a chair at 1am but I guess I was just hallucinating bec we don’t even have a cat
Slight correction: How does the eye work
2ndly: 3am.
Close anyways haha
It's literally 1:17am😂
it's literally 1 am rn😂
Education systum should include animated concepts of topics. If not now then in near future it is going to be there in every school.
This 8 year old 3 and half minute video cleared my class 10 concept without wasting time. Every second had information which was important. 🗣️🔥🔥🔥
That music gave me a heart attack😂
A
😂😂
I read this immediately after thinking that🤣
Yes bro😂
Excellent information, except that a concave lens is thinner in the middle and thicker around the edge. The simulated image at 2:40 is inaccurate because it shows a thicker middle/thinner edge, which is the definition of convex.
The eye is the organ of sight and is shaped as a slightly irregular hollow sphere. Various structures in the eye enable it to translate light into recognizable images. Among these are the cornea, the lens, and the retina.
Light first passes through the cornea, a clear dome-like structure covering the iris, or colored part, of the eye. The cornea bends, or refracts, the light onto the lens. The light is then refracted a second time while passing through the lens, finally focusing on the retina. The retina is the light sensitive part of the eye. Impulses travel down the optic nerve to the occipital lobe of the brain, which then interprets the image in the correct perspective.
The shape of the eye is very important in keeping the things we see in focus. If the shape of the eye changes, it affects a person’s vision.
Normally, light is precisely focused onto the retina at a location called the focal point. A nearsighted eye is longer from front to back than a normal eye causing light to be focused in front of the retina instead of directly onto it. This makes it difficult to see objects that are far away. Glasses with concave lenses are used to correct nearsightedness. The concave lens focuses light back onto the focal point of the retina.
Farsightedness occurs when the length of the eye is too short. Light is focused at a point behind the retina, making it difficult to see objects that are up close. A convex lens is used to correct farsightedness because it directs the focal point back onto the retina.
How Your Eyes Work
When light rays reflect off an object and enter the eyes through the cornea (the transparent outer covering of the eye), you can then see that object. Rods and Cones in the retina
The cornea bends, or refracts, the rays that pass through the round hole of the pupil. The iris (the colored portion of the eye that surrounds the pupil) opens and closes, making the pupil bigger or smaller. This regulates the amount of light passing through.
The light rays then pass through the lens, which changes shape so it can further bend the rays and focus them on the retina. The retina, which sits at the back of the eye, is a thin layer of tissue that contains millions of tiny light-sensing nerve cells. These nerve cells are called rods and cones because of their distinct shapes.
Cones are concentrated in the center of the retina, in an area called the macula. When there is bright light, cones provide clear, sharp central vision and detect colors and fine details.
Rods are located outside the macula and extend all the way to the outer edge of the retina. They provide peripheral or side vision. Rods also allow the eyes to detect motion and help us see in dim light and at night.
These cells in the retina convert the light into electrical impulses. The optic nerve sends these impulses to the brain, which produces an image.
The human eye is an organ that reacts to light and has several purposes. As a sense organ, the mammalian eye allows vision. Rod and cone cells in the retina allow conscious light perception and vision including color differentiation and the perception of depth. The human eye can distinguish about 10 million colors and is possibly capable of detecting a single photon.
Similar to the eyes of other mammals, the human eye's non-image-forming photosensitive ganglion cells in the retina receive light signals which affect adjustment of the size of the pupil, regulation and suppression of the hormone melatonin and entrainment of the body clock.
Visual perception is the ability to interpret the surrounding environment by processing information that is contained in visible light. The resulting perception is also known as eyesight, sight, or vision (adjectival form: visual, optical, or ocular). The various physiological components involved in vision are referred to collectively as the visual system, and are the focus of much research in Linguistics, psychology, cognitive science, neuroscience, and molecular biology, collectively referred to as vision science.
Light entering the eye is refracted as it passes through the cornea. It then passes through the pupil (controlled by the iris) and is further refracted by the lens. The cornea and lens act together as a compound lens to project an inverted image onto the retina.
The retina consists of a large number of photoreceptor cells which contain particular protein molecules called opsins. In humans, two types of opsins are involved in conscious vision: rod opsins and cone opsins. (A third type, melanopsin in some of the retinal ganglion cells (RGC), part of the body clock mechanism, is probably not involved in conscious vision, as these RGC do not project to the lateral geniculate nucleus but to the pretectal olivary nucleus.) An opsin absorbs a photon (a particle of light) and transmits a signal to the cell through a signal transduction pathway, resulting in hyper-polarization of the photoreceptor. Rods and cones differ in function.
Does the pupil size get larger when viewing distance or near?
Thanks a lot
Thank u so much , this was a very big doubt for me cleared up
Please do correct this video, people will learn this and make mistakes. Everyone, you can check from the internet that MYOPIA=NEAR SIGHTEDNESS is corrected with a DIVERGING/CONCAVE LENS. Because the light converged in FRONT of the FOVEA CENTRALIS is makes sense that we use a diverging lens to spread it till it reached ON the optic disc. Same for FARSIGHTEDNES needs a CONVEX LENS for correction. Light converged BEHIND the FOVEA CENTRALIS, we need a convex/CONVERGING lens to help it converge ON the FOVEA CENTRALIS. Rest is correct. Thank you for the rest of the video. Also I wasn't shouting, just high lighting for convenience
hello, i would like to use this video for education reasons and there is a need to make a translation to our local language (czech). can i get a licence to do that? Or does anybody know how ro handle this officially ?
thank you
No teacher i would not reccomed putting your students thru harm
you can download the video through y2mate and then give credits to this channel. as for the captions, you have to edit it in the video. hope this helped.
0:23 snatched the soul out of me...did he really had to cut the eye in half?
😭😭
Photogenic memory. The eyes in development from 0 to 100 we must appreciate to it's fullest. Take care of innocence. The master comes back to see. ✌️😷🤓😇🤲🏹
it'd be much better if you stated that the lens was the one with the incorrect shape, as the eye shape really doesn't affect the placement of the focal point, whereas the shape of the lens does. If the lens is too thick at a relaxed state then the focal point falls in front of the retina, if the lens is too thin at a relaxed state then the focal point falls behind the retina.
Actually incorrect. The cornea does way more focusing then the lens does. So a misshapen cornea causes the lens to be unable to compensate, and hence focus wrong.
@@dankmemesstudios3987after the focal point,then what,like isn't the image like really really really small,cause yea the focal point? do those photoreceptors calculate images this small
@@dankmemesstudios3987In school I haven't studied much on sense organs but in physics,Iv learnt that an image is in the between of the principal axis and the point of intersection of rays
but here all the parallel rays meet(that is the focal point) at the retina direct,and the eye is spherical type,so there is no space for the object rays to intersect,the hit the curvs of the retina too early
@@kazukawasaki97 1) The rays don't converge at a perfect point, but small enough on the order of magnitude of the size of the eye to be considered a point. 2) Parallel rays focus at a point, but so do off axis parallel rays (rays that don't enter the eye straight on). They will focus at a different point in the eye.
@@dankmemesstudios3987 I think a generic image does not matter, a generic image is required for as an image is the arrangement of rays which the brain can process and interprit as some object,what the retina need is just photon,and the amount,angle and wavelength will send according signals,I think I might be right
Sir, can you please make science (class 11th & 12) detailed study easier through animation, so that students can find neet easy to crack ?
Omg!!! I have learned a lot in this video, so conscience.
🎉❤
I highly recommend this video. ❤
Soooooo no one ever questions that everything is ACTUALLY upside down and our brain just “fixes” it???
Sir i used your video a small clip for making a fact video so please you don't give me any copyright.
This is amazing and interesting video with animation.
Thank you so much
Me and the boys making sharingans
hah, it’s handy to know that my eyes are too long...
😂😂😅😅😂😂 the bigger your eyes the longer they are.
ahhahahahah😂😂🤣
breh same
So.. by this theory...
We live inside a world that's sun is a heated core .
Not me commenting to see if anyone in my class sees
beautiful eyes, i wish my eyes were like that 👀
u just great and great my regards
This video is good
Nice video, unfortunately you got the part about focussing wrong. You need to mention the lens changes shape to focus objects placed at different distances onto the retina. Corrective glasses are needed if the lens can no longer achieve this task. Very misleading !
ruclips.net/video/AI7s-kGofIw/видео.html
My left eye in the center is hurting and my left nostral is dripping without anything coming out
Huh
So people with 20/20 vision have a eye length somewhere in between ?
What I now say is a true experience I had: For a few years ago I was at our backyard and I watched at the trees. Suddenly without any advance warning I saw the trees upside down. The trees was where the sky should have been, and the ground was where the sky should have been. But just for a second or less. Then after a few seconds more it happened again. Again, only for a second or less. Then after a few years I watched a TV-program where a doctor was speaking about the human eyes, and then I understood what had happened to me that day. It had to do with my brain, and it was only for a second or two (2x1= 2) and then it was over. I have not experienced that thing anymore, and I thank God for that. The life would be a mess if you don't know what is up and what is down.
Dear fellow believer ! I appreciate that you gave credit to God ! I just released a similar video followed by a Bible study suggestion on Apostle Paul . In awe of our creator and redeemer , Suzanne Shera, Author of Lightlab
I have subecribe because it do not contain ad 😱😱😱😱🤘
does this mean what we are seeing are only projections of what is out there or are we seeing the things in themselves?
Ooo, good question! The answer would be yes... and no! We see objects when light is reflected off of them, then that light enters our eyes. The interpretation of what we see is based on our brains ability to make sense of it. Unfortunately, some peoples receptors that catch the entering light do not work as they are supposed to, so they either don't see it, or they see it distorted or they see it in a different color. And I won't even begin on what the brain can do with that information!!
2:02 if light focuses precisely on the retina then all colors should combine at the same point and make white and everything would appear white color to us, i think it should focus slightly front of retina(1:18) so different wavelentgh light waves can activate different cones to make 2D image of object
You are confused. If the light coming in is white, it would be perceived as white. If the colour is not white, eg looking at a coloured object, then the three cones would detect the different primary colours but these would be in different amounts and they would recombine to form the colour of the object and not white light. Your attempt to redesign the eye is misguided.
that would be the case if we had single photoreceptor with sensitivity to all the colours.
All praise to God - Subhan Allah
سبحان الله الخالق العظيم
عبدالله العزايزه MashAllah subscribed my channal please my Muslim bro💚
Subhan Allah
❤️❤️
Nice and easy to understand , thank you
My Ipad was literally too far away when I started the video and I couldn't see it wooooowww.....
ممكن ترجمته للغة العربية
وشكرا🍃
Who came here in online class
What if we are seeing upside down and what we call land is sky and sky is land...
Thanks brother this is my doubt about my eye thanks for clearing my doubt see u soon brother
The human body is such a complicated machine, it boggles tf out of my mind to think about it lol
The boys
I have a few questions. First, how does the brain knows that it has to reverse the image in order to see the world how it is, because it is changing what the eye actually sees, how does the brain knows that this is the right way, to reverse it ?!? Why the eye has to show us the world upside down in the first place anyway and not show it how it is, lol ? When I am shooting with my DSLR camera the image comes upside down also, because it's a lens like the eye and the software reverse it to see it normal or what ? What about the old cameras how did they reversed the image, when they didn't had computing power but the image was always normal ?
Andrei Djurkov daaaamn
The brain does NOT have "intellect" to "know". The path of visual coded light refracts at the cornea and lens curvature and places the coded signals upside down and backward on the retina. The visual impulses journey the visual path and reverse refract up-righting the signals as the impulses exits the eyes. It is not the brain/visual cortex that does the seeing. It is the extended mind that receives the sight sensation.
A divergent theory of vision vs the orthodox theory:
www.visualexperiments.org/
There was a test I heard that they did back know when, where they paid a guy to wear glasses that made the world upside down, after about a week or so, he started seeing things right side up while wearing the glasses. Then they took the glasses off him, and he ended up seeing the world upside-down until his brain re-fixed itself.
Heh This video comment section is amazing. I've been looking at weird esoteric crap all day and this is too interesting.
andrei djurkov hmm, interesting name. R U interested in space and zero gravity? how would a human orient himself in complete darkness with no visual cues?
سبحان الله
My question is... The input of the eyes is sent to brain through OPTIC NERVES, then how the message of brain reaches the eyes to see the image erect and real?
I would say that its the brain that interprets the image and that is what we see, the brain does not send signals back to the eye.
this is helpful, thank you!
slay
You are made incorrectly nearsightness and farsightness...
You make oppositely..
Patient with nearsightness (myopia) can see far object clearly, and difficult to see close objects clearly...
And patient farsightness (hypermetropia) is the opposite
So .... here we are ...
Class ....
Do the eyes and brains see “ reality “ correctly??” No , of course not “.
So let’s reverse it all to see the reality of living inside a planet !
How everything is really , upside down ...
We don’t actually live on the surface of earth ..
We actually live inside earth .!!
Newton said , in order to go up , we must go down ...
You do realize this does not work with light as single bit of information. Only works if every photon
have all the picture in it self. And the amount of them decides the amount of light you c!
I’m sorry but I’m confused could explain what that mean
thank you baby
Pls help me
سبحان الذي أحسن كل شيء خلقه
Jesus love you, he died on the cross for you, accept him as your lord and savior he can change everything. For God so loved the world that he gave his only son, so that everyone who believes in him may not perish but may have eternal life" (John 3:16)
But you must repent too. From that time Jesus went about preaching and saying, Let your hearts be turned from sin, for the kingdom of heaven is near. (Matthew 4:17):
,
Interesting..!!
Yes interesting! You look with the eye you see with brain, which means you and the world is in your head rightnow. The external world you think is external in actually internal
When I search for 'focal point' (mentioned in your video) I cannot find 'focal point' anywhere, not with reference to the eye at least.
Do u know what u should add background music to make it more interesting
He perfected everything he created.
What about those of us with glasses or hearing aids?
He creates everyone as equals but not same as others.@@courtneythiessen6832
@@courtneythiessen6832he (Allah) did not create them
❤❤❤❤❤❤❤2.42..... timing ...... for correction of near sight problem we have to use concave lens........ u said also same in video.... but in the diagram that is not a concave lens..... its like a convex lens........ so better to avoid confustion at 2.42 timing concave lens matter❤❤❤❤❤
All Stores Please lower the price of all Military and Local for all brands of Vision Products and Accessories and Production Cost Now That's too much $$ The Whole World Now Pray
All Stores Please lower the price of all Military and Local for all brands of Vision Products and Accessories and Production Cost Now That's too much $$ The Whole World Now Pray
All Stores Please lower the price of all Military and Local for all brands of Vision Care Products and Accessories and Production Cost Now That's too much $$ The Whole World Now Pray
All Stores Please lower the price of all Military and Local for all brands of Vision Products and Production Cost Now That's too much $$ The Whole World Now Pray
سبحان الخالق
Hi everyone.If read this message please read the Holy Quran the direct words and the final message from Almighty God.It will guide you to peace truth and happiness in this world and the afterworld with my lovely wishes
After long searching for this I found that the focal point in an eye with -1 diopter of myopia is 0.34 mm in front of the retina. Very small but enough to fk things up.
How does the double bending through cornea and lens form inverted image, it is only the convex lens of our eyes that form inverted image, cornea just bends light, doesn't do anything, am i right?
Muscular destropy have any remedy?
Alhamdulillah the Allah is great who had made whole universe with his ultimate power and knowledge. We got amazed by this short video about human eye but never see the universe in the same way. Allahu Akbar
I’m sorry but this all seems like just one big stretch of a theory because how would you know any of this was true unless you could actually look inside of the eye and watch all of this happen for yourself.
My right eye is severely far sighted, I wonder if they can do eye surgery to move my retina and enlarge it to maybe help my brain see closer in the right eye to see well in the distance and up close? This would require restructuring the entire size of the eye shape. Presently, my right eye is shrunk in its size and sees far sighted 20/70 with correctable lenses (according to my understanding of farsightedness and eye shape in this video), my left eye is correctable to 20/20 with eye glasses or contacts, as of my most recent eye exam on 3.19.19.
I don't think they can change the shape of your eye? But i'm sure you can get some sort of laser eye surgery to help your eyesight in your right eye? I hope everything goes well anyway😊
Our eyes lie about perceptions...
That means I'm inside earth...
1:47 says the occipital lobe corrects the image. How do we know that is the question
@@navigatingel6104 I also noticed a camera uses a mirror to " correct " images.
To us , the image needs to be mirrored for us to see it correctly or it looks mirrored.
A world that appears as a surface is actually a underground.
The sun appears to move in a arc going away when in fact , it arcs towards us.
Our eyes lie to us and doctors know this.
Our eyes make us believe we live on surface of earth when in fact , we live inside earth .
Trapped in a world traveling through a frozen universe the sun cant even heat up.
Tempatures of minus 300.
The earth's heated core / is called a sun.
The hollow planet has a sun for its core to keep life from freezing eternally.
The moon is an optical illusion of light too.
It is impossible for a solid to become invisible.
Not impossible for light to become invisible.
When you look closely at a telescope , image is mirrored too.
The moon looks solid light till it disappears.
Half the moon is missing .
A shadow does not make objects invisible unless it's made of light.
The moon light appears to disappear.
Like a a black hole becomes visible. Due to light reflection and refraction...
Like somebody turns off a lightbulb...but takes a week to turn off.
A moon light that just fades away .
Thus brings us to..." How to advertise on earth's atmosphere."..
While using mobile when we pursed our mobile display then why we feel uncomfortable to see the movie or picture??what is the science behind it??
Oh
But how do we see stuff that is bigger than our eyes? Wouldn’t the light just bounce of the object then travel in the trajectory then skip entering our eyes ..
Thank you for your video😊
It's so sad how people can believe it wasn't designed but rather created itself over a millions of years! That is so sad how blind and lost people are!
terrible video, no mention that the lens changes shape to focus at different distances, no mention that nearsighted and far sighted have to do with muscles and lens....if it was only how long the eye is then it wouldn't change with age as its the muscles on lens that change not length of eye
great video. I wished you would`ve titled it refraction though so it would have been easier to find. Thanks.
Thats me near sighted correct thats how i see but mine is strong i could see a single word from a TV with a big Letter yet i was only 3 metters away from tv
But in both cases those glasses were convex. Incident ray fell on outward bulged side of glasses.
Then Allah says:
سَنُرِيهِمْ آيَاتِنَا فِي الْآفَاقِ وَفِي أَنفُسِهِمْ ...
We will show them Our signs in the universe, and within themselves,
meaning, `We will show them Our evidence and proof that the Qur'an is true and has indeed been sent down from Allah to the Messenger of Allah, through external signs, فِي الْآفَاق (in the universe),' such as conquests and the advent of Islam over various regions and over all other religions.
Mujahid, Al-Hasan and As-Suddi said,
"And signs within themselves means, the battle of Badr, the conquest of Makkah, and other events which befell them, where Allah granted victory to Muhammad and his Companions, and inflicted a humiliating defeat on falsehood and its followers.''
It may also be that what is meant here is man and his physical composition. As detailed in the science of anatomy, which indicates the wisdom of the Creator -- may He be blessed and exalted -- and the different inclinations and opposite natures that people have, good and bad, etc., and the (divine) decrees to which man is subjected, having no power to change and over which he has no control.
Allah's statement,
... حَتَّى يَتَبَيَّنَ لَهُمْ أَنَّهُ الْحَقُّ أَوَلَمْ يَكْفِ بِرَبِّكَ أَنَّهُ عَلَى كُلِّ شَيْءٍ شَهِيدٌ ﴿٥٣﴾
until it becomes manifest to them that this (the Qur'an) is the truth. Is it not sufficient in regard to your Lord that He is a Witness over all things?
means, sufficient is Allah as a Witness over the words and deeds of His servants, and He bears witness that Muhammad is telling the truth in what he says, as Allah says:
لَّـكِنِ اللَّهُ يَشْهَدُ بِمَآ أَنزَلَ إِلَيْكَ أَنزَلَهُ بِعِلْمِهِ
But Allah bears witness to that which He has sent down unto you; He has sent it down with His knowledge. (4:166)
Soon will We show them our Signs in the (furthest) regions (of the earth), and in their own souls, until it becomes manifest to them that this is the Truth. Is it not enough that thy Lord doth witness all things?
why
@@T0XX1KK lol
i dont care about Allah he is not even real
How to learn science by checking out the place umm I don't want to know my display profile pic
Thanks I have exam tomorrow of science and I was confused you helped me
Same here XD
I reckon the glass lenses for nearsighted should be biconcave shape rather than biconvex shape as it is shown in the video.
Great observation! When we learn the optics of how lenses work, to simplify our math, yes, we use biconcave lenses. But in the world of glasses, the front side of the lens is convex (sometimes almost flat), and the back side is concave enough to overcome the convex side. This style eleminates much distortion and creates a better lens design to fit in our frames. Hope this helps!
هلا والله👩⚕👨🎓 من السلطنهه 13\12\2023 الساعه 4:18 عصرا
Have you noticed that the image of the eye is 2 dimensional...
True. Having two eyes helps us perceive distances better because we two images slightly differente from each side of the object which makes the illusion of a 3 dimensional image
Grass is a plant with narrow leaves growing from the base. A common kind of grass is used to cover the ground in a lawn and other places. Grass gets water from the roots in the ground. Grass is usually pigmented with the colour ‘green’. Grasses are monocotyledon, herbaceous plants.
The grasses include the "grass", of the family Poaceae (also called Gramineae). Also sometimes it is used to include the sedges (Cyperaceae) and the rushes (Juncaceae). These three families are not closely related but belong to different clades in the order Poales. They are similar adaptations to a common life-style.
The true grasses include cereals, bamboo and the grasses of lawns (turf) and grassland. Uses for graminoids include food (as grain, sprouted grain, shoots or rhizomes), drink (beer, whisky), pasture for livestock, thatching thatch, paper, fuel, clothing, insulation, construction, sports turf, basket weaving and many others.
Many grasses are short, but some grasses, like bamboo can grow very tall. Plants from the grass family can grow in many places, even if they are very cold or very dry. Several other plants that look similar but are not members of the grass family are also sometimes called grass; these include rushes, reeds, papyrus, and water chestnut.
Grasses are an important food for many animals, like deer, buffalo, cattle, mice, grasshoppers, caterpillars, and many other grazers. Unlike other plants, grasses grow from the bottom, so when animals eat grass they usually do not destroy the part that grows. Without grass, dirt can wash away into rivers (erosion). Graminoids include some of the most versatile plant life-forms. They became widespread toward the end of the Cretaceous. Fossilized dinosaur dung (coprolites) have been found containing grass phytoliths (silica stones inside grass leaves).[Grasses have adapted to conditions in lush rain forests, dry deserts, cold mountains and even intertidal habitats, and are now the most widespread plant type. Grass is a valuable source of food and energy for many animals.Lawn grass is often planted on sports fields and in the area around a building. Sometimes chemicals and water is used to help lawns to grow.
People have used grasses for a long time. People eat parts of grasses. Corn, wheat, barley, oats, rice and millet are cereals, common grains whose seeds are used for food and to make alcohol such as beer.
Sugar comes from sugar cane, which is also a plant in the grass family. People have grown grasses as food for farm animals for about 4,000 years. People use bamboo to build houses, fences, furniture and other things. Grass plants can also be used as fuel, to cover roofs, and to weave baskets. n English, the word "grass" appears in several phrases. For example:
"The grass is always greener on the other side" means "people are never happy with what they have and want something else." "Don't let the grass grow under your feet" means "Do something". "A snake in the grass" is about a person that will not be honest and will trick others. Grass is sometimes used as a slang term for cannabis (also called pot, weed, or marijuana)
Interesting and informative video helped me alot!!
The light not the flame right? ,(っ.❛ ᴗ ❛.)っ
i hate how indians write sir in every comment, like bro calling someone sir doesnt make u smarter than anyone else
Wow the brain and eyes are the most marvelous and amazing creations of God...Praise the Lord Jehovah in Jesus name for this wonderful gift..
Oh give me a break
@@shivermetimbers9620 Oh give me a break that you think this all happened by chance.
@@sandeegrey5977 I didnt say I thought it all happened by chance.
@@sandeegrey5977 I'm saying to say "praise the lord" sounds dumb because nobody here has any proof of "the lord" to say that as if its factual. If there is a God... How? You can say praise the lord for creating all this, it's so beautiful, but who does god praise? Gods existence came from somehwere. Where? Not saying it all happened by chance but I'm also not just laying my life down for something that hasn't shown itself once. And yes I say "it" bc everyone refers to god as if it is a human. If theres a God it looks nothing like us and tha in itself is scary. Go ahead and praise this weird energy ball of light and miracles. I'll sit right here.
@@shivermetimbers9620 I see your point.
But the rays are converging in the middle so why the image is being formed on retina
Eye are good looking around 🌦️🌈☀️🌹🌄