Literatuurlijst en links
Deze pagina bevat links naar; en informatie over allerlei onderwerpen die me na het hart liggen. Bijvoorbeeld zonnewijzers. Als U een foto van een of andere speciale zonnewijzer heeft dan kunt U me gelukkig maken door een kopie ervan via email te sturen.
all images copyright © to acw ten broek
 Baren forumAn amazing group of very nice people engaged in all sorts of printing 
 Fibonacci numbersThe golden mean, the golden rectangle, Parthenon, Nautilus shell, sunflower seed heads....check it out
 Art work of my sonsFlickr website pages of Social advances by my son, Pieter, who is deep into photography. He also posted some work of my other two sons, Marten and Robert.
This photo is made by Pieter ten Broek.
 Raglan roast
Raglan, surf
paradise in Nieuw Zeeland. Dit is waar alle surfers en aanverwante
sportievelingen die wat kleur in hun leven willen hebben naar toe komen. Je
kunt de serieuze geur van het koffie roosten al twee straten ver weg ruiken. En
als je er bent dan is er top barista Robert die je een keuze geeft van een
varieteit van geweldige koffie. Als je weet wat goed voor je is dan kun je
Raglan aan de westkust van de Waikato niet voorbij lopen.
 Global warmingWhen I was working in South Nigeria, my boss, Nico van der Laan, told me that data obtained by the missionary indicated a drop in precipitation of 25% since WWII to 1970.
Vast tracts of the Northern Sahara used to be lush and green, supporting elephants and lions long ago. Much of the deforestation and desert creep happened well before mankind even imagined all kinds of CO2 producing inventions. It probably had more to do with issues beyond our control like intensity, duration and frequency of sunspot activity over time.
What did not help was mankind keeping goats and using farming methods not keeping pace with population growth.
The oil palm in this picture is barely 24 years old, yet it already shows four growth bursts indicating a return cycle of between four and six years. Ideally it ought to be more like sixteen years.
If you can find a copy, I suggest reading Ritchie Calder's book 'Men Against the Desert'.
 Bumble beeAnother matter under investigation. For some funny reason everyone seems to know quite a bit about wasps or bees, but when it comes to bumble bees a mist descends and the answers become questions. Meanwhile some answers from this interesting web site.
 Astronomy picture of the dayEvery single day another magnificent photo out of space or event linked to space.
This is a double rainbow over Waimauku.
 Timber wind mill AgnetaThis website is in Dutch, however the pictures are self explanatory
 New Zealand Wine IndustryInteresting website. Also the individual wine districts get a lot of attention.
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