physics blog

There is more polarized light than you think

The 20 regular readers are probably a little tired of the polarization, but the big difference between horizontally and vertically polarized light at a normal view I was not aware of. The sun was low, and about 90 degrees to the left of the view direction. The sunlight is therefore scattered in the mist by approximately 90 degrees. In this case, the polarization can only be perpendicular to the direction of incidence and outgoing beam. Therefore in the picture it is almost vertically. Both images were taken with the same aperture and shutter speed. To get an idea of where polarized light appears in the picture, I have determined the difference with the GIMP. In the fine structures in the tree, the leaves probably did not stay exactly in the same place. The brightness at this positions are probably artifacts.

Here the difference between vertically and horizontally polarized light is shown

In landscape photography you should always have a polarizing filter it.

Used in the wrong direction the 3D eyeglasses blocks linear polarized light of the LCD display.

Modern 3D eyeglasses consists of circular polarisation filters. These filters have on the one side a normal linear polarisation filter and on the other side a ?/4 plate. Therefore both glasses of the eyeglasses behave in linear polarized light LCD of the screen directly, if the side with the linear polarisation filter shows toward the screen. For a 3D effect the eyeglasses would not be suitable, since here each eye has to see another picture. In the next picture the eyeglasses held at the large horse produce circular polarized light, both glasses in different direction of rotation. The light of the lower eyeglass lens is blocked due to the front eyeglasses and let through that of the upper eyeglass lens.

The glasses for 3D cinema use circular polaized light.