Changed over time. can we have a look at it under the _ a look at it under the microscope?- a look at it under the microscope? a look at it under the microscoe? , ., microscope? yes, i can position it under the _ microscope? yes, i can position it under the microscope - microscope? yes, i can position it under the microscope and - it under the microscope and then you can see it on the computer. you can see the yellow layer that is on top of the white layer.— yellow layer that is on top of the white layer. the cracks... you could _ the white layer. the cracks... you could see _ the white laye...