Contrast, size and markers: making yourself visible
30 min
Stand at the top of a tall building and look down at a park. People are dots. A picnic blanket is a small square, visible only if it is a colour the grass is not. A dog running is easier to spot than a person sitting still. Now imagine looking down from a helicopter several hundred metres up, moving at speed, through a scratched window, in flat grey light, over…
In this lesson
The three rules: contrast, shape and size
Contrast
Shape
Size
Shadow
Movement
Waving and movement signals
Space blankets, survival bags and bright clothing
The warmth question
Signals in snow, sand and shingle
How to build them
Where not to build
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The rest of this lesson is in the full course
Every module, practical and exam, self-paced and private, with a certificate at the end.
£149.00Original price was: £149.00.£99.00Current price is: £99.00.
Places on the full course open soon. Module 1 is free to try now.
