steam locomotive excursions

Diesel particulate filter, filters the particulate matter by forcing the exhaust gases to pass through a ceramic wall flow filter. The ceramic wall flow filter features a porous wall and is single ended. When the spent gases are forcibly passed through the porous wall, the particulate matter is filtered along with the gas is discrete thereby lowering the particulate emission inside atmosphere. This picture amazingly captures the think layer of clouds within the valley near the south of Lake Como, northern Italy. In the above image, the dense cloud hides almost the valley and instead gives off some artificial lights which make the city like an opaque blanket. The village over distance is clearly seen from the blanket.