Method:
The stiff piece of cardboard was measured, 61 cm on the longest side and
30.5 cm on the shortest side, the excess cardboard was cut away. A pushpin was
stuck 2cm along the centre of the longest side. A 30.5cm piece of string was cut and
one end was tied around a pencil and the other end, the pushpin. A hemisphere of
approximately 4cm was cut out of the area in the centre of the longest side, just big
enough to fit a volunteer’s nose. The pencil with the 30.5cm string attached to it was
stretched and used to draw a hemisphere of diameter 61cm. A protractor was placed in front of the push pin and intervals of 10 degrees were marked and the lines were then extended with the use of a ruler, to the edge of the hemisphere. Colours that were more visible on black cardboard were used to darken the lines to make it more visible. A foam cup was stuck midway beneath the cardboard to make it a handle. Several colours and shapes were then cut out and coloured in with different
coloured markers and sticky taped onto a popsicle stick. A volunteer was gotten to
hold the vision protractor and another person held a popsicle stick with a shape on
perpendicular to the protractor and run along the curve, until the volunteer detected the object, then the shape and finally the colour. The angles at first sight
was then recorded in a table which had the records for each colour/shape and the
angles.
Sunday, June 13, 2010
Intro-to-be
How the perception of objects, using peripheral vision, is influenced by the objects' shapes and colours.
Our peripheral vision is used by people everyday, as it allows for the sight of the surroundings all around us to help determine where objects are, unlike our central vision which is used to look at objects in our direct sight, and also to look at details. Peripheral vision will help in many activities such as driving, juggling, self defence or reading. The peripheral vision is extending up to almost 180 degrees and can be divided in lets say three different levels: para-central (near-peripheral), mid-peripheral and far peripheral with each of them providing different level of detail in general towards the far end of the peripheral vision.
It is the retina which is able to discriminate the differences in wave length content to help humans determine the content of the things seen. Research has shown that there are two sensors in your eye located in the retina, cones and rods. Cones are responsible for detecting colours and the finer details and are mainly found around centre area of eyes, the fovea, associated with sharp central vision. The cones consists of three types, A, B, and C cones. Each is sensitive to one wave length of colour. A is mainly associated wit orange –red. B, green – yellow and C- blue.
Whereas rods are able to detect motion as well as detecting objects in dim lights. They too are located in the retina.
According to the Pantone website, the eyes of humans are able to perceive more variations in warmer colours than cooler ones. This is because almost 2/3 of the cones process the longer light wavelengths (reds, oranges and yellows).
But here need to be exceptions for those. About 8% of men and 1% of women have some form of colour impairment. Most people with colour deficiencies aren't aware that the colours they perceive as identical appear different to other people. Most still perceive colour, but certain colours are transmitted to the brain differently.
In a book by __________ it is theorized that Yellow, green and blue are able to be perceived better as do not seem to change colour as the light changes either, either when the lit dims or when the light gets brighter. But also, when humans think they perceive the correct colour, is may be that, for example, orange. Our A cone cells are absorbing 80% of the light and B cone cells, 20% and C cone cells, 0%
As societies emerge into the wider world, red is the first ‘true’ colour they identify, followed by a greenish yellow. Green and yellow are invariably distinguished before blue is distinguished from black. Daylight reveals more colour information than artificial light, and some artificial lights are better than others.
Therefore the theory being tested is that yellow, green and red are the colours which affect the peripheral vision the easiest as red is recognized by societies more often and yellow and green do not change colour when the light changes.
A draft of my not finished yet intro? ;D
Our peripheral vision is used by people everyday, as it allows for the sight of the surroundings all around us to help determine where objects are, unlike our central vision which is used to look at objects in our direct sight, and also to look at details. Peripheral vision will help in many activities such as driving, juggling, self defence or reading. The peripheral vision is extending up to almost 180 degrees and can be divided in lets say three different levels: para-central (near-peripheral), mid-peripheral and far peripheral with each of them providing different level of detail in general towards the far end of the peripheral vision.
It is the retina which is able to discriminate the differences in wave length content to help humans determine the content of the things seen. Research has shown that there are two sensors in your eye located in the retina, cones and rods. Cones are responsible for detecting colours and the finer details and are mainly found around centre area of eyes, the fovea, associated with sharp central vision. The cones consists of three types, A, B, and C cones. Each is sensitive to one wave length of colour. A is mainly associated wit orange –red. B, green – yellow and C- blue.
Whereas rods are able to detect motion as well as detecting objects in dim lights. They too are located in the retina.
According to the Pantone website, the eyes of humans are able to perceive more variations in warmer colours than cooler ones. This is because almost 2/3 of the cones process the longer light wavelengths (reds, oranges and yellows).
But here need to be exceptions for those. About 8% of men and 1% of women have some form of colour impairment. Most people with colour deficiencies aren't aware that the colours they perceive as identical appear different to other people. Most still perceive colour, but certain colours are transmitted to the brain differently.
In a book by __________ it is theorized that Yellow, green and blue are able to be perceived better as do not seem to change colour as the light changes either, either when the lit dims or when the light gets brighter. But also, when humans think they perceive the correct colour, is may be that, for example, orange. Our A cone cells are absorbing 80% of the light and B cone cells, 20% and C cone cells, 0%
As societies emerge into the wider world, red is the first ‘true’ colour they identify, followed by a greenish yellow. Green and yellow are invariably distinguished before blue is distinguished from black. Daylight reveals more colour information than artificial light, and some artificial lights are better than others.
Therefore the theory being tested is that yellow, green and red are the colours which affect the peripheral vision the easiest as red is recognized by societies more often and yellow and green do not change colour when the light changes.
A draft of my not finished yet intro? ;D
Thursday, May 13, 2010
Method.
The method to do this experiment would be:
1. Collect all the equipment needed for the experiment and with them, build a peripheral protractor as seen below.
2. Begin to draw up shapes, in a variety of colours and attach it to a paddle pop stick.
3. Record exactly what shapes are made and what colours are used in a table.
4. Using the cup as seen above, hold it like a handle and close to your nose so all you see it the flat surface of the protractor in front of you.
5. Get a volunteer (the same person will be used during the whole experiment) to hold up the first shape and starting at 0 degrees begin to walk towards the centre of the protractor until you are able to detect the shape in your peripheral vision.Make sure the person holding the protractor is facing straight and not looking at the corner of their eyes for the shape the volunteer is holding.
6. Record the exact angle at which you first saw the shape in your table.
7. Get the same volunteer to repeat 5 again until this time, you are able to see the colour instead.
8. Repeat steps 5-7 again with several more shapes of different colours.
9. Trial steps 5-7 with different sized shapes & as well, in dimmer or brighter light.
10. Records the observations of which shape & colour was seen more quicker and record it in a table.
1. Collect all the equipment needed for the experiment and with them, build a peripheral protractor as seen below.
2. Begin to draw up shapes, in a variety of colours and attach it to a paddle pop stick.
3. Record exactly what shapes are made and what colours are used in a table.
4. Using the cup as seen above, hold it like a handle and close to your nose so all you see it the flat surface of the protractor in front of you.
5. Get a volunteer (the same person will be used during the whole experiment) to hold up the first shape and starting at 0 degrees begin to walk towards the centre of the protractor until you are able to detect the shape in your peripheral vision.Make sure the person holding the protractor is facing straight and not looking at the corner of their eyes for the shape the volunteer is holding.
6. Record the exact angle at which you first saw the shape in your table.
7. Get the same volunteer to repeat 5 again until this time, you are able to see the colour instead.
8. Repeat steps 5-7 again with several more shapes of different colours.
9. Trial steps 5-7 with different sized shapes & as well, in dimmer or brighter light.
10. Records the observations of which shape & colour was seen more quicker and record it in a table.
Sunday, April 18, 2010
more on!..srp? :D
So peripheral vision is the vision that is able to view objects or individuals which aren't directly in front of us. Researching abit I found from this website
--> http://hyperphysics.phy-astr.gsu.edu/hbase/vision/rodcone.html
I found some interesting things like, how it is more sensitive to dimmer objects since rods dominate, this will definitely affect the experiment since I'll be testing different colours. Also that it detects motion better. :D interesting .. I'll probably find out that the larger objects will be more easily noticed in my vision, seeing from this website here
--> http://www.webexhibits.org/colorart/ag.html.
Most of the equipments or objects I need I already have at home.
But the things I need to buy would be:
- stiff material (cardboard, poster material?)
- a push pin.
- disposable cup. (plastic or foam)
- Popsicle sticks.
--> http://hyperphysics.phy-astr.gsu.edu/hbase/vision/rodcone.html
I found some interesting things like, how it is more sensitive to dimmer objects since rods dominate, this will definitely affect the experiment since I'll be testing different colours. Also that it detects motion better. :D interesting .. I'll probably find out that the larger objects will be more easily noticed in my vision, seeing from this website here
--> http://www.webexhibits.org/colorart/ag.html.
Most of the equipments or objects I need I already have at home.
But the things I need to buy would be:
- stiff material (cardboard, poster material?)
- a push pin.
- disposable cup. (plastic or foam)
- Popsicle sticks.
CLIMATIC GRAP :D
Hello everyone its been awhile == I swear I spent hours doing this grap on paint :( cause I dont know how to use photoshop properly T.T well anyways heres my awesomest work :DDD
Wednesday, March 10, 2010
independent, controlled & dependent.
o.o
soo the controlled, independent & dependent variables of this experiment are:
Controlled: - in which direction the vision protractor is held.
- Focus point.
Independent: - The shape and it's colours.
- dimness and brightness of the area where the experiment is taking place.
- different sizes of the shapes.
Dependent: - the angle at which the shape is first spotted.
soo the controlled, independent & dependent variables of this experiment are:
Controlled: - in which direction the vision protractor is held.
- Focus point.
Independent: - The shape and it's colours.
- dimness and brightness of the area where the experiment is taking place.
- different sizes of the shapes.
Dependent: - the angle at which the shape is first spotted.
alteration to the planned experiement =__="
I decided to add in the idea of using different sized objects, in darker or brighter light. I wonder if that's ok -.-"
Sunday, March 7, 2010
srp decision :D
I've decided to do an experiment where I'm testing how peripheral vision is influenced by the objects' shape and colour
-->http://www.sciencebuddies.org/science-fair-projects/project_ideas/HumBio_p016.shtml
-->http://www.sciencebuddies.org/science-fair-projects/project_ideas/HumBio_p016.shtml
Monday, March 1, 2010
srp ideas :oo
Even though I'm not exactly sure about my experiment, I want to do something relating to peripheral vision :DD