Saturday, August 4, 2007
Converging Lens:
1..draw/choose a point on top of the object and draw 3 incident rays traveling to the lens.The first ray should be perpendicular to the lens,then draw the refracted ray that passes through the focal point.The 2nd ray should be drawn passing through the focal point,then the refracted ray should be parallel to the principal axis. . Draw the third incident ray such that it travels directly to the exact center of the lens.
2. Get the intersection of the refracted mark the image.
Diverging Lens:
1.draw/choose a point on top of the object and draw 3 incident rays traveling to the lens.The first ray should be perpendicular to the lens,then draw the refracted ray that passes through the focal point.The 2nd ray should be drawn passing through the focal point,then the refracted ray should be perpendicular to the object. Draw the third incident ray such that it travels directly to the exact center of the lens.
2.Get the intersection of the refracted rays.
released at.. [2:02 AM]
Our eyes and the camera both has a lens. They also use the same type of lens, the converging lens. Those lenses are found in magnifying glasses, they make an image look bigger. This is why you can see the details in something even if it’s on the other side of the room. One thing about lenses is that they can only focus on things that are the same distance away from them. This is why your eyes can focus on things that are close to you or far from you; just not at the same time. Cameras are the same way - you can only focus them on things that are the same distance away.
In the camera, the lens focuses the light onto a piece of film. The film has chemicals in it that basically trap the image on it, making it permanent. Instead of film, your eye uses something called a ’retina. The retina has lots of little tiny things called ’rods’ and ’cones’ all over it. These are basically tiny antennae that tell your brain about the light that hits them. The rods tell your brain whether there is a light in a certain spot or not while the cones tell your brain of what is the color of the light percepted.
There is one spot on the retina, though, that has no antennae at all. This is the spot where the nerve leaves your eye to go to your brain. At this spot, you can’t see anything at all. That spot called your blind spot. This is one of the reasons that you have two eyes: what you can’t see with one eye you can see with the other. Unlike your eyes, cameras have no blind spot, so they only need to have one lens.
In the camera, the lens focuses the light onto a piece of film. The film has chemicals in it that basically trap the image on it, making it permanent. Instead of film, your eye uses something called a ’retina. The retina has lots of little tiny things called ’rods’ and ’cones’ all over it. These are basically tiny antennae that tell your brain about the light that hits them. The rods tell your brain whether there is a light in a certain spot or not while the cones tell your brain of what is the color of the light percepted.
There is one spot on the retina, though, that has no antennae at all. This is the spot where the nerve leaves your eye to go to your brain. At this spot, you can’t see anything at all. That spot called your blind spot. This is one of the reasons that you have two eyes: what you can’t see with one eye you can see with the other. Unlike your eyes, cameras have no blind spot, so they only need to have one lens.
released at.. [1:50 AM]
Friday, July 13, 2007
at last!we have taken our long test!..uhm, my head is aching after i have taken that test..i was like "phew!"..
well...my expectations for that test is that it will be suuuuuuuuuuuuuuuuuper hard..or a "suntok sa buwan".. xD
but....i was surprise..at least i am not that clueless on the questions given on that test,,..
phew, all i can say is....i survived the test.... =P
well...my expectations for that test is that it will be suuuuuuuuuuuuuuuuuper hard..or a "suntok sa buwan".. xD
but....i was surprise..at least i am not that clueless on the questions given on that test,,..
phew, all i can say is....i survived the test.... =P
released at.. [2:21 AM]
Thursday, June 28, 2007
1. List all the given data, include the magnitude and direction.
2. Draw a Cartesian plane.
3. draw all the vectors, remember to follow your measurements and the angles.
4. Measure the distance between your starting point and the last point of your last vector. Measure also its angle. This is your resultant.
2. Draw a Cartesian plane.
3. draw all the vectors, remember to follow your measurements and the angles.
4. Measure the distance between your starting point and the last point of your last vector. Measure also its angle. This is your resultant.
released at.. [7:40 AM]
1. List all the given vectors. Include the direction and the magnitude.
2. Make a Table consisting of three columns, Vector, x component and y component.
3. Using the SOH CAH TOA, get the x and y component of all the vectors and jot them down on your table.
4. Total the x and y components of your vectors.
5. Use the Phytagorean theorem, the result of the phytagorean theorem will be the resultant.
2. Make a Table consisting of three columns, Vector, x component and y component.
3. Using the SOH CAH TOA, get the x and y component of all the vectors and jot them down on your table.
4. Total the x and y components of your vectors.
5. Use the Phytagorean theorem, the result of the phytagorean theorem will be the resultant.
released at.. [7:34 AM]
Thursday, June 21, 2007
woooohh...
physics is getting harder and harder as time pass by.
especially at the topic of light, since I am not good at geometry. Pft! Screw that damn subject.
well, about waves. I enjoy this topic, why? I don't know.
It's just I like the topic. =P
physics is getting harder and harder as time pass by.
especially at the topic of light, since I am not good at geometry. Pft! Screw that damn subject.
well, about waves. I enjoy this topic, why? I don't know.
It's just I like the topic. =P
released at.. [6:41 AM]
Saturday, June 16, 2007
well,well,well...(tagalog translation: magaling magaling... xD)
fixed my blog!...
it's now presentable....(but still somewhat empty xP)
im so sleepy to add more on my blog...so this is august signing off...
-_- zzzZZZzzzZ...
fixed my blog!...
it's now presentable....(but still somewhat empty xP)
im so sleepy to add more on my blog...so this is august signing off...
-_- zzzZZZzzzZ...
released at.. [8:50 AM]
