Dual polarisation interferometry
Dual polarisation interferometry is a way of measuring really small things that are too small to see with our eyes. Imagine you have a really small toy car that you can't see without a magnifying glass. That toy car is like the small things we want to measure, except they are much, much smaller.
To measure these small things, we use a special machine called a dual polarisation interferometer. It's like a really fancy microscope that uses light instead of lenses to see the small things.
The dual polarisation interferometer has two parts that work together to measure the small things. These parts are like two friends, one named Polar and one named Izer. Polar and Izer work together to measure things by sending light waves towards the small thing and measuring how the light changes as it interacts with the small thing.
The first part, Polar, sends two different kinds of light waves towards the small thing. These light waves are like special flashlights that can shine in different directions. One light wave shines up and down and the other shines side to side. When the waves reach the small thing, they bounce off and come back to Polar.
The second part, Izer, compares the two light waves that came back to Polar. It's like if you and your friend both take pictures of your toy car from different angles and then compare the pictures to see if they look the same. Izer does the same thing with the two light waves.
If the small thing is not there, the two light waves will look exactly the same when they come back to Izer. But if the small thing is there, the waves will change slightly as they bounce off the small thing. This change is like a tiny puzzle piece that tells us something about the small thing.
Scientists use dual polarisation interferometry to learn more about how small things interact with other things or how they work. It's like looking at a car engine and trying to figure out what each part does. With dual polarisation interferometry, scientists can see how each part of the small thing works and interacts with other things in the world.
To measure these small things, we use a special machine called a dual polarisation interferometer. It's like a really fancy microscope that uses light instead of lenses to see the small things.
The dual polarisation interferometer has two parts that work together to measure the small things. These parts are like two friends, one named Polar and one named Izer. Polar and Izer work together to measure things by sending light waves towards the small thing and measuring how the light changes as it interacts with the small thing.
The first part, Polar, sends two different kinds of light waves towards the small thing. These light waves are like special flashlights that can shine in different directions. One light wave shines up and down and the other shines side to side. When the waves reach the small thing, they bounce off and come back to Polar.
The second part, Izer, compares the two light waves that came back to Polar. It's like if you and your friend both take pictures of your toy car from different angles and then compare the pictures to see if they look the same. Izer does the same thing with the two light waves.
If the small thing is not there, the two light waves will look exactly the same when they come back to Izer. But if the small thing is there, the waves will change slightly as they bounce off the small thing. This change is like a tiny puzzle piece that tells us something about the small thing.
Scientists use dual polarisation interferometry to learn more about how small things interact with other things or how they work. It's like looking at a car engine and trying to figure out what each part does. With dual polarisation interferometry, scientists can see how each part of the small thing works and interacts with other things in the world.