You probably wouldn't want to drive in these sunglasses. Normal polarized glasses reduce glare reflecting from damp roads, etc, by blocking horizontally polarized light, as this reflected light is strongly polarized.
The polarization on screens, including the one in your car satnav, is usually oriented so that someone wearing polarized glasses can see it. Rotate the polarization on the sunglasses, and you won't be able to see the satnav, and you'll get maximum glare off the road because the sunglasses will block much of the ambient light, but almost none of the road reflections.
The polarization on screens, including the one in your car satnav, is usually oriented so that someone wearing polarized glasses can see it. Rotate the polarization on the sunglasses, and you won't be able to see the satnav, and you'll get maximum glare off the road because the sunglasses will block much of the ambient light, but almost none of the road reflections.