Video links 1. http://www.youtube.com/watch?v=YK9BUQl9qxA (uk convex mirrors) 2. http://www.youtube.com/watch?v=zjCNKq_EN3c (2:18- 6:07) concave reflectors How Light Enters the Eye 1. Pupil: the black opening that lets light into
your eye. 2. Iris: the colored circle of muscle around the pupil that dilates (gets bigger) or contracts (gets smaller) to control the amount of light entering the eye.
3. Cornea: a tough, transparent tissue that holds your eye together and focuses light. Has no blood vessels. 4. Sclera: the opaque white tissue around
the cornea. 5. Retina: light sensitive tissue at the back of the eye, where light rays are focused and an image is formed.
6. Optic Nerve: a nerve that carries electrical signals from the eye to the brain. 7. Fluid: provide support by filling the spaces in the eye, supplies nutrients to the
cornea. 8. Lens: a flexible, convex structure that focuses light http://www.youtube.com/watch? v=gvozcv8pS3c http://www.youtube.com/watch?
v=0HzWmldLDHI&feature=related B. The Cornea-Lens-Retina System 1. Light rays are refracted by the cornea so that they converge toward the retina. A
convex lens behind the cornea fine-tunes the focus when muscles around it change its shape becoming thicker to focus on object close by, and becoming thinner to focus on objects far away.
2. The image that forms on the back of the eye is upside-down (inverted). 3. The area where the optic enters the retina does not have light-sensing cells, so it is called the blind spot.
http://www.youtube.com/watch? v=cFVbLnXWn6A C. Black and White and Colour Vision 1. Rod cells: black and white vision, and help us see shape and movement in low light. They are
long, cylindrical shaped cells that absorb all colours of light (especially green). 2. Cone cells: allow us to detect colour. We have three kinds of cone cells, containing red, blue, and green sensitive pigments so that we can see all the different colours of light.
1. Normal vision: the convex lens in your eye can change shape (thicker or thinner) in order to make light rays converge on the retina and produce a sharp image.
2. Near-sightedness: When people can see things close by but not far away, it is because the lens causes the light rays to make an image in front of the retina and the image will not be clear. A concave lens make the light rays diverge enough so that the image forms at the
right location. (Mrs. Bakker) 3. Far-sightedness: When people can see things far away but not close by, it is because the light rays form an image behind the eye. A convex lens can make
the image form correctly. (Mrs. Lockwood) 4. Astigmatism: When peoples corneas are distorted and irregular, images can focus on more than one point on the retina. This
can also be corrected with glasses, contacts, or surgery. e. Blindness 1. Most people who are blind can detect some light or have very limited vision (for
instance, they can only see the edge or the middle of a whole scene). 2. Can be the result of disease or malnutrition, as is common in the developing world
3. Snow blindness: painful, temporary partial or complete blindness caused by the glare of the sun on things like snow. The Inuit wore snow goggles to prevent this.
4. Night blindness: when it is difficult or impossible to see in dim light, usually because the rod cells dont work. Vitamin A Campaign: http://www.youtube.com/watch?
v=AADuvZMZ0qM 5. Colour blindness: the ability to see only in shades of grey. It occurs for about one person in every 40 000. Colour vision deficiency, when it is hard to distinguish between colours like red and
green, is quite common (8% of males and 1% of females). Mantis Shrimp http://www.nature.com/news/mantisshrimp-s-super-colour-vision-debunked1.14578
Color Memory Video https://www.youtube.com/watch?v=0cpjh3iVjg
Versöhnungsfeier DEICHKIND Es tut mir Leid doch ich muss leider gestehen es gibt Dinge auf der Welt die sind Auto's machen Dreck, Umwelt geht kaputt doch 'ne fette neue Karre is' Ich knabber' an nem' Buntstift, Mama sagt 'Lass das!'...
Vector modulation amplitudes of the order of 50 nT (HW set) Vector modulation frequenciesadjustable in ASM SW (presently # 8-11-13 Hz) Real-time measurement of the 3 projection amplitudes gives the orientation of the magneticfield=> bothscalar and vectormeasurements are providedat 1...
Earth Observation Informatics FSP | Dr Arnold Dekker World is moving to better integration of multiple data sources & models Lack of access to vital EO data, especially in less developed countries, hampers global actions and treaties on climate change,...
Time and energy management can make you more productive and reduce your stress level. The Three Steps. Set goals. Make a schedule. Revisit and revise your plan. Be tough with your time. Actively avoid procrastination and time wasters. Learn to...
Džerisona Lensdouna (Gerison Lansdown) Velsas valdības decentralizēta 1998. gadā Iespēja attīstīt savu asambleju Atklāt nopietnus bērnu fiziskās un seksuālās vardarbības gadījumus aprūpes namos Velsā, kas izdarīti pirms daudziem gadiem Nespēja uzklausīt bērnus bija novedusi ...
CONSEQUENCE OF HAHN BANACH THEOREM . A Closed bounded convex set, C in a Banach Space X, a point P outside, can be separated from C by a hyperplane QUESTION : CAN THIS SEPARATION BE DONE BY INTERSECTION/UNION OF BALLS?...
Evil (Genesis 4 - Cane and Able) Original sin enters in the world because of the free will of humanity - The Fall of Humanity. Genesis 6-9 Noah . and the Flood. The world becomes so evil, that God must...
Ready to download the document? Go ahead and hit continue!