Re: Falcon Optics 5.5-25x56 Menace Review
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lindy</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">It just SO happens that one mil approximately equals 1cm at 100m.</div></div>
Well, no. You're on the right track, though.
One milliradian is an angle which subtends an arc whose length at <span style="font-weight: bold">EVERY</span> distance is exactly 1/1000th of the distance.
In other words, one milliradian subtends an arc whose length is:
1 yard at 1000 yards.
1 meter at 1000 meters.
1 mile at 1000 miles.
1 league at 1000 leagues.
1 fathom at 1000 fathoms.
1 inch at 1000 inches.
1 foot at 1000 feet.
1 lightyear at 1000 lightyears.
1 attoparsec at 1000 attoparsecs.
3.6 inches at 3600 inches (100 yards).
Now, scopes whose angular system is milliradians usually adjust in 0.1 milliradian clicks - which is why at 100 meters, each click is worth 1 centimeter.
But, since 100 yards is 3600 inches, one milliradian is exactly 3.6 inches, and one 0.1 mil click is .36 inches.
I'm sure glad I have all this in a file, so I don't have to keep re-typing it.
Cheers!
-- Lindy
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Just wanted to clarify your point, Lindy.
If we're going to be exact... yes, you are correct that the length of the ARC is exactly 1cm at 100m if we are talking about 1 milliradian (the curved arc length between two points, with the circle centered on the scope)... but most people use the CHORD (the linear length of the straight line that connects the aforementioned two points) as what they want to measure. Which is why I said "approximately equal", since the length of the chord will be slightly less than the length of the arc.
For all intents and purposes, at typical shooting distances the difference is so small, and we are able to use the arc and the chord interchangably.
Sorry to get all nerded out about this. Carry on with the scope review.