X-Nico

unusual facts about Block design


Block design

A fundamental theorem, Fisher's inequality, named after the statistician Ronald Fisher, is that b ≥ v in any 2-design.


William J. Youden

He developed the "Youden square", an incomplete block design developed from a 1937 paper, "Use of Incomplete Block Replications in Estimating Tobacco Mosaic Virus".


see also

14 cm/40 11th Year Type naval gun

Breech block design began in 1922 AD, the eleventh year of the Taishō period.

14 cm/50 3rd Year Type naval gun

Breech block design began in 1914, the third year of the Taishō period.

20 cm/50 3rd Year Type naval gun

Breech block design began in 1914 AD, the third year of the Taishō period.

Danson House

After Sir John died in January 1800 (being buried in St Mary's churchyard, Lewisham), his son demolished the imposing wings containing kitchens and stables, and built the present stable block (design attributed to George Dance the Younger).