How far could a ferro rod spark or a spark wheel be seen…
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How far could a ferro rod spark or a spark wheel be seen from?
In the dark could you use a ferro rod or spark wheel spark to attract attention and maybe even signal with? If you were on an island and you sparked at night cold a helicopter or boat see it from, let's say 100 feet? But even that might not be very useful. Please and thank you.
#activity
In the dark could you use a ferro rod or spark wheel spark to attract attention and maybe even signal with? If you were on an island and you sparked at night cold a helicopter or boat see it from, let's say 100 feet? But even that might not be very useful. Please and thank you.
#activity
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