Eye Dissection.

Eye Dissection
Explaining, light enters the eye.

Cornea - It is at the front of the eye. It is tough, transparent and convex.
Pupil - Dark hole in the middle of your eye.
Iris - The coloured part of your eye.
Lens - The lens is Bi-convex transparent disc.
Retina -  Retina is layer of cells at the back of your eye that is sensitive to light.
Optic nerve - A bundle of nerve cells that connects the eye to the brain.

Light enters the eye through the see-through cornea. The Iris controls how much light entering the pupil. When it travels through the lens, the light is focused onto the retina lining in the back of the eye. The retina transforms the image into an optic impulse which travels along the optic nerve to the brain.

How does cow see at night?

Cows have night vision because of their (galaxy alike coloured - tapetum). This tapetum reflects light back through the retina causing the cow see through the night. As humans, we don't have these kind of eyes to see through the night. Other animals also has night vision including, owls, cats, eagles, falcons and etc.

Don't you know?

-The first form of the image is upside down but your brain is smart enough to flip it the right way.
- The average blink lasts 1/10 of a second.
- The cells in your eye come in different shapes.
- You blink about 12 times a minute.

Video

Pictures

S.E.E.L Pharagraph

I am a Filipino monarch during the 15th century and I am an constitutional monarch.

Being a constitutional Monarch means I have limited power.

Because I am the Monarch, I live in a hidden base and spent all my time learning about the new world.

I plan to rule for life and have my eldest son be the next King for ruling Philippines.

S.E.E.L

Human Rights

S - People in the 14th had many thoughts of vandalising their King.
E - These thoughts was mainly came from the King's negative decision.
E - For example people thought of killing the king, or getting a new one.
L - These were only some of the possible thoughts by the people at that time.

Convection

Aim:
To observe convection in a liquid.

Method:
1. Set up a Bunsen burner on a heatproof mat. Put the gauze maton the tripod but leave it just to one side of the bunsen burner.
2. Fill a 200mL beaker with 150mL cold water.
3. Place the beaker on top of the tripod and gauze and allow it to settle for a few minutes.
4. Carefully insert a drinking straw down one side of the beaker, ensuring the straw is touching the bottom of the beaker. Be careful as you do not want to disturb the water too much.
5. Using tweezers, drop a crystal of potassium permanganate down the side of the straw. Wait for the crystal to settle on the bottom of the beaker.
6.Very gently, so to not disturb the water, remove the straw.
7. Light the bunsen and slide it under the tripod so that you are only heating the outside of the beaker where the crystals is. Observe.

Results:
The potassium permanganate particles turned the water purple as we heated the beaker. The purple liquid raised up.

A Video Of The Result:

Discussion:
In this experiment the hot liquid was the potassium permanganate. The hot water rises because it is less dense.