If you didn't grow up in a tropical climate, you probably heard something like this as a child...
Put on a hat before you go out because
you lose the most heat through your
head.
Some say that the reason you lose more heat through your head is because "heat rises" and most of your bod...
The taut-line hitch is an adjustable loop knot for use on lines under tension. It is useful when the length of a line will need to be periodically adjusted in order to maintain tension. It is made by tying a rolling hitch around the standing part after passing around an anchor object. Tension is maintained by sliding the hitch to adjust size of the loop, thus changing the effective length of the standing part without retying the knot.
It is typically used for securing tent lines in outdoor activities involving camping, by arborists when climbing trees, for creating adjustable moorings in tidal...
I've heard the old saying that "1/3 of your body heat is lost though your head", it's often cited as a reason to wear a hat on a cold day in the mountains.
Is this actually true? Are their any studies/resources to back this up/contradict it?
The Immelmann turn refers to two different aircraft maneuvers:
In World War I aerial combat, an Immelmann turn was a maneuver used after an attack on another aircraft to reposition the attacking aircraft for another attack.
In modern aerobatics, an Immelmann turn (also known as a roll-off-the-top, or simply an Immelmann) is an aerobatic maneuver that results in level flight in the opposite direction at a higher altitude.
== Historical combat maneuver ==
In World War I aerial combat, an Immelmann turn was a maneuver used after an attack on another aircraft to reposition the attacking aircraft for...
