Robert Retherford

It seems there might be a typo in your question, as "Robert Retherford" doesn't refer to a widely recognized individual or term. However, if you meant "Robert Rutherford," you could be referring to someone related to notable fields such as science, literature, or another area. If you're asking about "Robert Rutherford," this could refer to J.J. Thomson, who is renowned for his work in atomic physics, or it could pertain to someone else entirely.