![](http://photos1.blogger.com/blogger/207/1121/320/flour.jpg)
The image to the right is of white house flour illuminated with the bottom light on the microscope.
![](http://photos1.blogger.com/blogger/207/1121/320/flour%20illuminated%20by%20white%20led.jpg)
The image on the left is of the same flour sample but illuminated from the side with white LEDs that seem to make the flour turn blue.
![](http://photos1.blogger.com/blogger/207/1121/320/flour%20illuminated%20by%20red%20led.0.jpg)
The image on the left is the same flour sample but illuminated with a red led from the side.
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