
Garrett Q. answered 07/30/19
Experienced teacher in English, the Humanities, and more
The word "sheafs" here appears to refer to those rays of light which resemble sheafs/bundles of grain, i.e. Rand is using it as a metaphor. The use of the more archaic spelling (sheafs) rather than the typical "sheaves" just adds to the confusion, but this seems to be the best way of reading the sentence. I hope that helps!