In order to fasten and fasion ropes, a large number of knots are used.
Styles of rope construction: Please add info
Ropes used for climbing can be divided into two categories: dynamics ropes and static ropes. Static ropes have very low stretch properties, they are used for carrying equipment, hauling equipment, and attaching pieces of equipment together. Dynamic ropes are stretchy; being stretchy is crucial in order to limit the maximum force experienced by a climber that falls when using one (and also the maximum force experienced by any piece of gear securing the climber to the rock or ice). The main ropes (called "lead ropes" when the climber is leading) that a climber uses are dynamic.
Climbing ropes are generally made from nylon and have kern mantle construction. There is a core, kern, of long twisted fibres in the middle, and an outer sheath, mantle, of woven coloured fibres. The kern provides most of the strength, the mantle protects the kern and generally affects the handling of the rope (how easy it is to hold, to tie knots in, and so on). Dynamic ropes are made by chopping the fibres in the kern to make them shorter which makes the rope more stretchy.
See also: [How to handle rope]?
Film directed by Alfred Hitchcock, released 1948. The story involves two men who commits a murder to see how it feels; it was inspired by the real-life murder of a young boy in 1924 by two college students named Leopold and Loeb. Hitchcock filmed each scene in ten-minute segments (the length of a reel of film at the time), each segment continuously panning from character to character in real time. Each ten-minute segment ends by panning against or zooming into an object (a man's jacket, or the back of a piece of furniture, for example) or by having an actor move in front of the camera, blocking the entire screen; each scene after that starts a static shot of that same object. (This technique has been used frequently since to "hide" edits, for instance in the Eagle-Eye Cherry music video "Save Tonight," and also in Erin Brockovich: Julia Robert appears to get into a car, drive down the street, and get hit by another car, but in fact the camera lingers behind on the road after she leaves, and at that point Steven Soderbergh cuts).
The film features James Stewart as a professor who espouses theories of moral superiority, from whom the killers take inspiration.