A Plein-Air Artists’ Manual
One of the great joys of natural navigation is that it intrigues such a wide variety of people, something it shares with food. We can’t…
Tag: oil
How to Find Your Way with Scents and Smell
Wildflowers help us to navigate in so many ways. Look at the wild marjoram, Origanum vulgare, above. You may have noticed that the stems are…
What is a Slick Line?
Slick lines form on water when a very thin layer of oil spreads out across the water. The oil dampens ripples creating calmer patches. Over…
Slick Lines
I noticed a good example of ‘slick lines’ in the sea from an aircraft the other day. These calmer lines are formed when a thin…