unknownpleasures(6) XScreenSaver manual unknownpleasures(6) NAME unknownpleasures - a waterfall graph of the signal from pulsar PSR B1919+21. SYNOPSIS unknownpleasures [--display host:display.screen] [--visual visual] [--win- dow] [--root] [--window-id number] [--delay number] [--count number] [--speed number] [--resolution number] [--amplitude number] [--noise num- ber] [--mask file] [--no-ortho] [--buzz] [--wireframe] [--fps] DESCRIPTION PSR B1919+21 (AKA CP 1919) was the first pulsar ever discovered: a spinning neutron star emitting a periodic lighthouse-like beacon. An illustration of the signal received from it was published in Scientific American in 1971, and later in The Cambridge Encyclopedia of Astronomy in 1977, where it was seen by Stephen Morris, the drummer of Joy Division, and was consequently appropriated by Peter Saville for the cover of the band's album "Unknown Pleasures". OPTIONS --visual visual Specify which visual to use. Legal values are the name of a visual class, or the id number (decimal or hex) of a specific visual. --window Draw on a newly-created window. This is the default. --root Draw on the root window. --window-id number Draw on the specified window. --delay number Per-frame delay, in microseconds. Default: 30000 (0.03 seconds). --speed number Animation speed. 2 for twice as fast, 0.5 for half as fast. --count number Scanlines (vertical resolution). Default: 80. --resolution number Horizontal Resolution, Default: 100. --amplitude number Height of the waves, 0 - 1.0. Default: 0.13. --noise number How noisy the signal is. 2 for twice as noisy, 0.5 for half as noisy. --mask file Use the given image file as a clipping mask against the data. A high contrast image of around 256x256 works best. Signal peaks ap- pear in the dark areas. --ortho | --no-ortho Whether to use an orthographic projection. --buzz | --no-buzz Whether each line should seethe with noise. --wireframe | --no-wireframe Render in wireframe instead of solid. --fps | --no-fps Whether to show a frames-per-second display at the bottom of the screen. ENVIRONMENT DISPLAY to get the default host and display number. XENVIRONMENT to get the name of a resource file that overrides the global re- sources stored in the RESOURCE_MANAGER property. XSCREENSAVER_WINDOW The window ID to use with --root. SEE ALSO X(1), xscreensaver(1) COPYRIGHT Copyright (C) 2013-2018 by Jamie Zawinski. Permission to use, copy, mod- ify, distribute, and sell this software and its documentation for any pur- pose is hereby granted without fee, provided that the above copyright no- tice appear in all copies and that both that copyright notice and this per- mission notice appear in supporting documentation. No representations are made about the suitability of this software for any purpose. It is pro- vided "as is" without express or implied warranty. AUTHOR Jamie Zawinski. X Version 11 6.15 (30-Mar-2026) unknownpleasures(6)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | ENVIRONMENT | SEE ALSO | COPYRIGHT | AUTHOR
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=unknownpleasures&sektion=6&manpath=FreeBSD+Ports+15.1.quarterly>