The dredging industry has been the backbone of the Dutch economy for centuries. If canals, harbours and rivers weren’t dredged out for a few years, the whole country would literally grind to a halt. Today, dredging happens with oil powered ships. However, the Dutch waterways were dredged mostly by hand for centuries, using simple but ingenious tools. Could it be done again?
How to Dredge Out the Netherlands without Fossil Fuels
Lighthouse Lamps Through Time
“The ingenuity of man is truly amazing and this can easily be seen in the odd collection of techniques used for the illumination of lighthouses across the centuries. Lighthouse illumination began with simple wood fires and progressed through generations of other methods.”
“Even the oil lamp began in simplicity and evolved into a machine with multiple wicks, clockwork oil pumps, specialized chimneys, hydraulic, pneumatic, and other variants. This story will take you through the history of illumination methods in lighthouses.”
Read more: Lighthouse lamps through time, Thomas Tag.
Roman Refrigerators
Archaeologists are trying to definitively establish if mysterious shafts discovered at Switzerland’s extensive Augusta Raurica site in 2013 could have been ancient “refrigerators”. It is likely that the Romans used shafts like the four-metre deep examples at Augusta Raurica – some 20 kilometres from Basel – as cool stores during summer. [Read more…]
Windmill on Ice or Water Bearings Has Low Friction at Low Cost
Simon Gripenberg, an artist from Finland, developed new types of vertical windmills, inspired by ancient Persian windmills and built from recycled materials. Most interestingly, the windmills float in water or spin on ice, so that Gripenberg manages to obtain low friction at low cost. [Read more…]
No Tech Reader #18
- My advice after a year without tech: rewild yourself.
- How to change the course of human history.
- The great nutrient collapse.
- Infrastructural Ecology: The City’s Buried Systems.
- A cyberattack in Saudi Arabia had a deadly goal. Experts fear another try.
- The social ideology of the motorcar (1973).
- Economic Science Fictions.
- Sociologists examine hackatons and see exploitation. [via internetactu.net]
- It wasn’t just Greece: Archaeologists find early democratic societies in the Americas. [Via Uneven Earth]
Think Outside the Sewer
“Shit can move on trucks.” [Read more…]