The highest accuracy in time is acquired for pinpoint light sources, whose transmission duration is of {HEAD ~ the same order} of {TAIL ~ size} as that of the line transfers 
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The highest accuracy in time is acquired for pinpoint light sources , whose transmission duration is of { HEAD ~ the same order } of { TAIL ~ size } as that of the line transfers
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH