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The Figure 4 trap consists of three sticks oriented into the shape of the numeral 4. One stick holds a relatively large weight. Some bait is fastened to the trigger stick. When an animal disturbs the bait the trap is sprung. The trap is effectively a lever. One of the sticks is the fulcrum (the upright portion of the numeral), one is the beam ...
A common type of toe hold is the figure-four toe hold, where a figure-four hold is used to hold the opponent's foot. This type of toe hold is performed by holding the foot by the toes with one hand and putting the other hand under the opponent's achilles tendon and grabbing the wrist.
Deadfalls and Snares is one of Harding's Pleasure & Profit Books.First published in 1907, is an instructional book for trappers on the art of building deadfalls from logs, boards and rocks, and making snares and toss poles, for catching all types of furbearers, such as skunk, opossum, raccoon, mink, marten and bear, and coop traps for catching wild turkey and quail.
A Barber pitfall trap, designed to catch small epigeic animals, particular arthropods. A pitfall trap is a trapping pit for small animals, such as insects, amphibians and reptiles. Pitfall traps are a sampling technique, mainly used for ecology studies and ecologic pest control. [1] Animals that enter a pitfall trap are unable to escape.
Cold traps (C in the figure) usually consist of two parts: The bottom is a large, thick round tube with ground-glass joints (B in the figure), and the second is a cap (A in the figure), also with ground-glass connections. The length of the tube is usually selected so that, when assembled, the total reached is about half the length of the tube.
A body triangle (also known as a figure-four body lock) is a technique in grappling that is employed from the back, back mount, or less frequently from the closed guard, whose purpose is to securely lock the practitioner's opponent in position. [1] This technique is very similar to one of the four forbidden techniques in judo, the do-jime or ...
In experimental physics, a quadrupole ion trap or paul trap is a type of ion trap that uses dynamic electric fields to trap charged particles. They are also called radio frequency (RF) traps or Paul traps in honor of Wolfgang Paul , who invented the device [ 1 ] [ 2 ] and shared the Nobel Prize in Physics in 1989 for this work. [ 3 ]
A ternary flammability diagram, showing which mixtures of methane, oxygen gas, and inert nitrogen gas will burn. A ternary plot, ternary graph, triangle plot, simplex plot, or Gibbs triangle is a barycentric plot on three variables which sum to a constant. [1]