Retro

Early olive oil factory

Early olive oil factory

This reconstruction of the earliest known olive oil factory demonstrates a simple yet ingenious process to extract olive oil from olives using pulleys, levers, and gravity decanting. This was much more effective than using mortar and pestle to make olive oil, typically used for small scale production. Dating back to the 6th century BC, this […]

Literary gold mine for CNC millers

Literary gold mine for CNC millers

From 1976 to 1983, Popular Science magazine, along with the American Plywood Association, ran an annual plywood panel project design contest for its readership. Often the winning projects were items of furniture, but that was not a requirement. A potter’s kick wheel and a folding plywood boat are notable exceptions. The rules were simple: Apart […]

Difference Engine maintenance manual

Difference Engine maintenance manual

[Image: Creative Commons Attribution photo from Adactio’s Flickr stream] Do you have a Babbage Difference Engine in dire need of servicing? Fret no more! Reg Crick of the London Science Museum has put together this handy “INSTRUCTION MANUAL to Operate and Maintain Charles Babbage’s 2nd Difference Engine,” written in 1991 to help keep the Engine […]

Derinkuyu: lost city found

Derinkuyu is situated on Nevsehir-Nigde roadway at 30 km in south region of Nevsehir. The history of the district of Derinkuyu named as Melagobia (Malakopi) which was meaning in the period of Eti the hard living is very old. In the district there are many underground cities and churches. As all of the underground cities […]