7B- My Learnings from the video and article by https://padlet.com/ekta5/o7fu4pc75d5hpola Write your learnings from the video and the article in form of bullet points. en-us 2022-02-25 04:35:55 UTC 2022-04-06 14:07:04 UTC hello@padlet.com Kriti Murugan kritimurugan1 https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2067527850 Video:

- Rat's eyes rotate independently so they can watch out for danger.

- Rods take in brightness & motion.

- Cones help us see color.

- We have 3 cones that help us see red,blue & green light.

- We have binocular vision (overlapping fields of view).

- Cats & Dogs have 2 Cones & more Rods than us.

- Cats have a special layer of cells at the back of their eye which is called the 'Tapetum Lucidum' which gives them better night vision.

- Leaf-tailed gecko's can see 350 times better than us at night due to their vertical Pupils & that they only have Cones in their eyes and not Rods.

- Mantis shrimp's have the best eyes in the world.

- Mantis shrimp's have compound eyes with 16 color receptors and they can see infrared and ultra-violet.

Article:

- The light first enters through a transparent layer called the Cornea.

- The Retina transfers energy in the light nerve impulses which are later taken through the Optic nerve.

- Color is an illusion.

- The colourful part of the eye is the Iris.

- In the middle of the eye, there is a Pupil which is a opening that lets light into the eye.

- The Pupil gets smaller when there is a lot of light.

- The Pupil gets bigger when it's dimmer.

- Blinking protects & moistens the eye.

- The Lens in your eyes focuses the light to the back of the eye and that's the time we can start seeing.

- The Cilliary muscles change the shape of the lens to let the eye change it's focus to something close by & things far away.

- The Cilliary muscles make the lens thicker to see something closer.

- The Cilliary muscles makes the lens thinner to see something further away. 

- The Lens focuses the light onto the Retina.

- The Rods and Cones are present in the Retina.

- We have approximately 120 million rods in each eye.

- We have approximately 7 million cones in each eye.

- Rods see in black & white.

- Rods help us in night vision.

- Brain translates nerve impulses sent through the optic nerve.
]]> 2022-02-26 14:02:08 UTC https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2067527850 Aditya Bhat https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2067929329 Video-

There is a significant difference between how we and different animals see the world.

Our sights are based on the amount of cones and rods we have in our eyes. For example, we have three cones which allow us to see red, blue and green.

While we have binocular vision where the view of both our eyes overlap, animals such as the Mantis shrimp don't have binocular vision, consequently they have a different view than us, even if we were staring at the same thing.

Many animals from the animal kingdom have evolved differently when compared to humans. Some have more or less cones and rods. The cats even have a special layer of cells called the 'Tapetum Lucidum' which enables them to visualize better pictures at night than us. 

The structure of the pupil also plays a key role in how we see. Gecko's who have vertical pupils can see far better than us at night. Another factor supporting this is the fact that Geckos only have cones and no rods.

The type of eye and the number of colour receptors also can affect which parts of the EMS you can see. The Mantis Shrimp can see many more rays than us such as the UV rays.

Article-

How do we see?

When light rays reflected by other objects reach over eyes, the  white layer on our eyes called the Cornea refracts it leading it inside our eyes where it meets the Convex lens. The convex lens refracts and focuses these rays to one single point inside the Retina. The Retina which has light sensitive nerves create impulses which are carried by the optical nerve to the brain. The brain perceives these impulses and creates a picture which is what we see.

How do we perceive colours?

When the VIBGYOR hit an object, some rays are absorbed and others are reflected depending on their wavelength. The rays which are reflected are the colours we see the object to have. We do not perceive the colour absorbed rays.

When all the rays are absorbed, we see the object to be black. The object also creates heat.

When all the rays are reflected, they continue to form white light and we see these objects as white in colour.

]]> 2022-02-27 05:09:53 UTC https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2067929329 Madhulika Vinod madhulikavinod2 https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068112184
Video:

1) Animals can see some colours which we cannot see

2) Cones are the cells which perceive colours, whereas rods absorb the brightness & motion

3) We have 3 cones, and these enable us to see red, blue and green light.

4) Dogs have 2 cones, they see blue and green as mixed. Also, they have many rods.

5) Cats have excellent night vision because they have cells called tapetum lucidum, which enables them to see at night. Their night vision is much stronger compared to ours.

6) Geckos have only cones and no rods. Their night vision is also much better than ours.


Article:

1) The light waves that enter our eye are refracted in the cornea.

2) The retina transfers the light energy waves to nerve impulses, which is then transferred to the optic nerve.

3) How we can see colour: When a material reflects a light wave of a certain frequency, it absorbs the rest. The reflected light wave is what we perceive as colour (which is actually an illusion).

4) Objects which appear black absorb all colours, whereas  objects which are white reflect all colours.

How do coloured filters work? (Article)

- They allow certain colours to pass through them. the other colours are either absorbed or reflected.

]]> 2022-02-27 11:40:35 UTC https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068112184 Arayana https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068295696
Video~

~Animals and humans see a lot of different things and sometimes they see things that we can't even see.

~Rods and cones help us see cones see the color and rods take in brightness and motion.

~Our cones are in 3 colors that are what we called the primary colors ( only for humans) as well-Red, blue, green.

~Cats have very good eyesight as they have a special layer of cells at the back of their eyes making their night vision way better than ours.

~There is a creature called Mantis shrimp which has 16 color receptors that help them see way better than us.

~Not only that but they also can turn their pupils in different directions. They can see Electromagnetic waves as well.

Article ~

~The refracted rays enter the cornea

~Colors are what is reflected off the surface and whatever color it's not is absorbed and if it's black it generated heat and if it's white it reflects all the colors.

~The wavelength depends on the properties of the object-is it smooth or rough etc.

~Color is an illusion

~VIBGYOR- if an object appears red it absorbs all the colors but red turning it into the object red.

~We can see in the night because of the rods in our eyes 

~Cones and Rods react to the light and relay this to the brain using optical nerves.

~The color filers allow only a certain color to pass through them they are absorbed or they are reflected.

~The Iris is behind the cornea. (the colorful part)

~The retina is the back wall of the eyeball.

]]> 2022-02-27 16:34:35 UTC https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068295696 Prerana https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068609722 -Just like how light refracts when it enters different objects and mediums, it also refracts when it enters our eyes.( cornea)
-The light then reaches the retina( located at the back of the eye), which is composed of tiny light sensitive nerves that transfer the energy(through the optic nerve) for the brain to interpret as sight. 

-We perceive colour when the remaining light that interacts with an object is reflected back. When an object doesn't absorb all of the light frequency, then the remaining that is reflected will be seen by the observer. 

-We have three cones that enable us to perceive the colours red, blue and green light. (rods and cones)

- Animals can see much more than us. 
-They don't always have binocular vision as we do, and can rotate their head and eyes 360 degrees( pigeons and rats)
-They had more rods so they can sense motion better.
- Animals like cats have special cells in the back of their eyes called 'Tapetum Lucidum' that allows them to have night vision( 6x stronger then ours )
- Geckos also only have cone cells and vertical pupils that allow them to have good night vision. 
-Mantis shrimp's have 16 colour receptors, they see all kinds of light rays in the spectrum such as ultraviolet, infrared, polarised light etc. They are the only creatures that can see circular polarised light. Their eyes also move individually. 


]]> 2022-02-28 00:57:43 UTC https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068609722 Adhya adhyabhat2 https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068711548 Video:

-Animals can see colors that we cannot see sometimes and some animals cannot see colors. 
-Light enters our eyes through our cornea and cones are cells which help us see colors. Rods absorb brightness from our surroundings. 
-Humans have 3 cones in our eyes, and dogs have 2 cones. 
-Different cones allow us to see different colors. 
-Cats can see very well during night because they have an extra layer in their eyes. 
-Cones help in night vision and geckos don't have rods. 
-Mantis shrimps can see very well and clearly because they have many color receptors. They have three eyes if i heard it correctly

Article:

-Light passes through the cornea to get into the eye and it gets refracted in the eye.
-Light is refracted again when it enters the lens and it gets focused on the retina which is in the back of the eye.
-The retina passes on the light to the optic nerve which sends it to the brain so the brain can understand and interpret what it's seeing.
-We see colors when a certain frequency is absorbed and reflected 
-If all colors are reflected, we see white. If all colors are absorbed, then we see black.
-We see the colors different as the object it reflects on is changed.
-Color filters only let certain colors to pass through them, and all the other colors are absorbed or reflected.]]> 2022-02-28 02:39:42 UTC https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068711548 Aanya Sinha https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068728000
Video:

- The rods take in brightness and motion.

- The cones perceive color.

- 3 cones- red, blue and green light.

- Humans have binocular vision.

- Some animals have overlapping vision.

- Different animals have different variations of cones and different types of visions.

- Some animals have a night vision because of some special cells.

Article:

- The light first passes though the cornea, a layer in the eye which then refracts the light.

- Then the light passes through a transparent lens called the convex. 

- Then the light focuses on the retina which is located at the back of the eye.

- The retina has nerves that are sensitive to light and transfer the energy of light to the optic nerve which carries it to the brain who interprets it as sight.

- If all colors of light are reflected by a material, it will appear white.

- If all colors of light are absorbed by a material, it will appear black.​

- Different materials absorb different frequencies of light, the frequencies that are not absorbed are reflected and we see the material as all the colors that got reflected.]]> 2022-02-28 02:54:03 UTC https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068728000 Rehan thedragonisbackforeal https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068742467 Video:

~Light also refracts when it enters our eyes.

~Animals can see colors that we can't.

~Humans have 3 cones in our eyes, that allow us to see red, blue and green light.

~Animals have the capability to see much more than us.

~Cats have a special type of cell in their eyes that allow them to see in the dark.

~Mantis shrimps can see very well as they have 16 color receptors.

Article:

~Light passes through the cornea and gets refracted in the eye.

~The retina has nerves which are sensitive to light and transfer the energy of light to an optic nerve which carries it to the brain which interprets it as light.

~We see colors when a certain frequency is absorbed and reflected.

~If all colors of light are reflected by a material, it will appear white.]]> 2022-02-28 03:06:03 UTC https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068742467 Pranoy pranoymathur2 https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068759667 - Animals can see colors we don't
- We have 3 cones, each for the primary colors of light
- Mantis shrimps have one of the best eyes as they have multiple cones and 360 degree vision]]> 2022-02-28 03:22:06 UTC https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068759667 Vittal vittaliyengar1 https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068780186 - Many animals don't see as many colors as we do but they have better night vision
-Mantis shrimps have the best vision because they have multiple types of cones and 360 degree vision
- Our eyes can see red, blue and green]]> 2022-02-28 03:41:34 UTC https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068780186 Antara https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068787922 -Different albums have different perceptions of sight, whether it be in color or area of vision
-Some animals even have 360° vision, such as the mantis shrimp
-Light is passed through the cornea and then refracted in the eye
-The vision in the back of the retina is upside down but the optic nerve and brain tell us to perceive it the right side up, it's upside down due to the Convex lens

]]> 2022-02-28 03:49:03 UTC https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068787922 veer veerangadarya054 https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068789685 -animals can see colours we cant see.
-we have three cones in our eyes  red, blue and yellow our primary colours.
-The mantis shrimp have eyes which can see 16 coloured receots they can see uv light. They have the best eyesight in the world.
article
light first enters through the cornea.
The light again get refracted as it passes through the lens. it refracts focus light
The retina is located on the back on the inside of the eye.
the retina the energy of the light waves to nerve impulses transmitted through the optic nerve.
the normal cornea refract light and protects the eye.
light is emmited or reflected from objects
light sensitive cells create nerve impulses retina.
focus point is on retina images are clear
optic nerve sendsnerve impulses for the brain for the interpretation

]]> 2022-02-28 03:50:42 UTC https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068789685 Aadith aaditharun1 https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068803199
-Animals see the colours that we can't see.

- We have three cones that help humans perceive colour, which are red, green and blue.

- Other animals have many cones that help them see infrared, and many more.

- Some animals like cats have a different type of cell that helps them see in the dark.

- The colour that we see depends on the colour of light that is shone on the object.

- Mantis shrimps have the most powerful eyes that have multiple cones and 360 degree vision.

-Humans have Tri-chromatic colour perceptions

- Red, green and blue are the primary colours only for humans.]]> 2022-02-28 04:03:53 UTC https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068803199 Vanya Nath https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068806335 -The mantis shrimp has the world's most "wonderous" eyes. They have trinocular vision, and can see full depth-perception, and can see 16 colours(through 16 colour receptors), ultraviolet and even infrared rays. They have 360 degree vision and multiple cones.

-we have 3 cones and rods (colour perceptors)in our eye, one for perceiving each primary colour-red, blue and green.

-many animals see many colours we dont

-we have binocular vision, where the view both of our eyes see, overlap. 

-(finish rest by today)

-


]]> 2022-02-28 04:07:06 UTC https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2068806335 Dia diamaheshwari2 https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2069036854 humans have 3 cones, red green blue.

cones detect colour and rods detect motion 

mantis shrimp have the best eyesight in the world.

Iris muscles hold the lens and pupil in place

the optic nerve is connected to the retina, and it is made of billions of neurones,

the retina forms the image upside down because of the type of lens present in our eye

black isn't a colour, there is no light present. so it is considered absence of light



]]> 2022-02-28 07:55:27 UTC https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2069036854 Roshan https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2070744851 Different animals have different cones, letting them see in different colors.

Humans can see red blue and yellow

mantis shrimps have 16 receptors, making them the animal with the best eyesight.

The reason we can see is because light reflects of objects, showing us color.

Humans have tri-chromatic perception


]]> 2022-03-01 03:59:39 UTC https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2070744851 Sharan https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2079639695 The light enters trough the cornea and gets refracted into the lens which focuses the light to the retina which has rods and cones which converts the information it gets into electric impulsive and it sends it to the brain using nerves.
There are rods and cones in our retina are receptors that collect light and send the information to the brain.

Cats have a special layer of cells in the back of their eyes called the tapetum lucidum
 
which gives them night vision 
Mantis shrimp have 16 colour receptors 
]]> 2022-03-06 05:37:05 UTC https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2079639695 Aryan https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2079663978 Different animals see colors in a different way depending on their eyes.

Us humans see Blue, Red and yellow as colors.

Humans have a binocular vision. Rats have independent visions in their eyes which means each eye looks in a different way.

There are various researches going on to replicate and learn from complex eye structures of various animals and apply them into making advanced lenses cameras.

If all colors of light are reflected by a material, it'll appear white.

Few special animals have night vision because their cells are build differently form other animals.


]]> 2022-03-06 06:39:52 UTC https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2079663978 Sia siabora2 https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2093387257 Different animals have different cones. Cones help us see color. For example, a red cone will help us see red and a blue cone will help us see blue. 

Humans have 3 cones. Red, blue and yellow. 

Other animals can have many other cones, which let them see colors that we can't.

One such example is the mantis shrimp. They have 16 color receptors and 360 degree vision. ]]> 2022-03-14 08:37:10 UTC https://padlet.com/ekta5/o7fu4pc75d5hpola/wish/2093387257