This period of time is called the restrike time. Restrike times for traditional probe-start MH lamps can take 15 minutes or longer, but restrike times for pulse-start MH lamps are generally much shorter (see Figure 4). According to manufacturers' literature, restrike times for pulse-start MH lamps can be more than twice as fast as for probe-start MH lamps.
Overview. Unix (officially UNIX) is a registered trademark of The Open Group that refers to a family of computer operating systems and tools conforming to The Open Group Base Specification, Issue 7 (also known as POSIX.1-2008 or IEEE Std 1003.1 - 2008).
Since its creation in 1969, Unix has evolved. into one of the worldâs most popular operating systems. Moreover, Unix is an excellent. environment for creating new software. Apple built Mac OS X on top of a version of. Unix called Darwin. If youâre a Mac user who wants to push the boundaries of what. you can do with your computer, hereâs what Unix can do for you.