Scordatura is the re-tuning of one or more strings to a non-standard pitch, although on a regular instrument, it is inadvisable to re-tune any string a semitone higher, or any lower than a fifth.
When strings are detuned, excess bow pressure will result in a distortion of pitch. The use of scordatura will also.
When strings are detuned, excess bow pressure will result in a distortion of pitch. The use of scordatura will also.