25 oktober 2016
21 oktober 2016
20 oktober 2016
19 oktober 2016
18 oktober 2016
Sycamore Road
1. The Bournville Village Trust Archive
Image credit: Detail from Sycamore Road Architectural Plan by W. Alexander Harvey, MS 1536 Drawing No. 18/01
2. Google Street View
Bournville (Wikipedia)
17 oktober 2016
Spijkermadonna
Via Moderne interpretaties van het lijden - N. Minnaar
Zie ook Frenken heeft juk van katholicisme afgeworpen (De Volkskrant, 1998)
14 oktober 2016
12 oktober 2016
Quicksand
Quicksand is a colloid hydrogel consisting of fine granular material (such as sand, silt or clay), and water.
Quicksand forms in saturated loose sand when the sand is suddenly agitated. When water in the sand cannot escape, it creates a liquefied soil that loses strength and cannot support weight. Quicksand can form in standing water or in upwards flowing water (as from an artesian spring). In the case of upwards flowing water, seepage forces oppose the force of gravity and suspend the soil particles.
The saturated sediment may appear quite solid until a sudden change in pressure or shock initiates liquefaction. This causes the sand to form a suspension and lose strength. The cushioning of water gives quicksand, and other liquefied sediments, a spongy, fluidlike texture. Objects in liquefied sand sink to the level at which the weight of the object is equal to the weight of the displaced soil/water mix and the submerged object floats due to its buoyancy.
11 oktober 2016
10 oktober 2016
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