taken from the article
TRADITIONAL ARCHERY ~ for bowhunters ...
There are essentially two types of longbows - straight and hybrid.
"Straight" longbows have limbs that are basically straight or perhaps with a bit of overall tapered reflex ("back set") or string follow ("belly set"). These are "classic" longbows that form a "D" shape when braced. Think: English longbow, American flat longbow, Howard Hill longbow.
"Hybrid" longbows have both reflexed limb ends and deflexed risers. This improves the overall efficiency of the bow, for faster arrow speeds, while still imparting a large measure of bow "stability" during the shot. Mild r/d longbows typically have that "D" braced classic longbow limb look when braced. Aggressive r/d longbows will typically show some reflex near the limb tips when braced, and allow even faster arrow speeds. The milder r/d longbows are typically somewhat more stable than the more aggressive variety (aggressive hybrids are closer in performance and aesthetics to recurves - and some will outperform recurves in the speed category).
Stick bows have a number of measured qualities, such as "stability" during and after the shot, "energy/speed" imparted to the arrow via the limbs, "noise" created during the shot, and "hand shock" after the arrow clears the riser.
Stability - the ability of the bow to remain as neutral as possible in the bow hand after the string is released.
Energy/speed - how much energy is imparted to the arrow as transmitted via the bowstring and bow limbs.
Noise - the decibel noise level after the string is released and as the arrow clears the riser; recurves typically have limb "slap", since the bowstring makes contact with the reflexed ends of the limbs, longbows don't have that issue.
Hand shock - any amount of energy that is not transmitted to the arrow is absorbed by the bow limbs and riser, and is transmitted to the bow hand.