Vilho Koljonen (August 18, 1910 – September 1, 2000) was a Finnish writer, photographer and composer. He was born in Kiihtelysvaara. After 1955 he worked as a teacher in Särkijärvi school. He played quitar. He died in Muonio, aged 90.
The Home Army 5th Wilno Brigade (also known as the Brigade of Death) was a unit of the Polish anti-Nazi resistance organization Home Army, active in the Vilnius Region during World War II. The main commander of the brigade was major Zygmunt Szendzielarz, nom de guerre "Łupaszko".
A pinhole is a small circular hole, as could be made with the point of a pin. In optics, pinholes with diameter between a few micrometers and a hundred micrometers are used as apertures in optical systems. Pinholes are commonly used to spatially filter a beam (such as a laser beam), where the small pinhole acts as a low-pass filter for spatial frequencies in the image plane of the beam.