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A figure-eight descender. The figure 8 belay device is a piece of metal (usually an aluminum alloy) in the shape of an 8 with one large end and one small end.
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A figure-of-eight loop tied using the follow-through method. A figure-eight loop is created by doubling the rope into a bight, then tying the standard figure-eight knot.. In climbing, this knot is used to save time when repeatedly attaching the rope to climbing harnesses, using locking carabiners, such as when a group of people are climbing on the same top-rope.
The figure eight is a technique used by anglers to fish specifically for the muskellunge. [1] It has been developed due to the nature of the fish's hunting style. Essentially, the figure eight is a final enticement performed by the angler just before lifting the lure out of the water for another cast.
A figure-8 laser is a fiber laser with a figure-8-shaped ring resonator. It is used for making pico - and femtosecond soliton pulses . The typical spectrum of such a laser consists of a wide central peak and a few narrow lateral peaks that are placed symmetrically around it.
The knife was made out of high-quality metal and had a typical blade length of 6–8 inches. Surgical amputation knives came in many styles and changed very much between 1840 and the American Civil War. These changes reflect changes in techniques used by the surgeons and makers of surgical knives during the period.
Jacques Lisfranc de St. Martin. Jacques Lisfranc de St. Martin (12 April 1787 in Saint-Paul-en-Jarez – 13 May 1847) was a pioneering French surgeon and gynecologist.He pioneered a number of operations including removal of the rectum, lithotomy in women, and amputation of the cervix uteri.
The directional figure eight (a.k.a. inline figure-eight loop) is a loop knot. It is a knot that can be made on the bight. The loop must only be loaded in the correct direction or the knot may fail. It is useful on a hauling line to create loops that can be used as handholds.