Can anyone help me figure out what's wrong with this sentence?

"The lighthouse is further away than it first appeared."

Go here and look up both these words:

Further

Farther

http://www.answers.com

Read this entertaining explanation.

http://www.quickanddirtytips.com/education/grammar/further-versus-farther?page=all

Certainly! To identify what might be wrong with this sentence, we need to analyze the grammar and meaning. Upon first inspection, the sentence seems grammatically correct and coherent. However, one potential issue could lie in the use of the word "further."

The word "further" is often used as a comparative form of "far" to indicate a greater degree or distance. However, in this context, it seems to be comparing the lighthouse's distance from two specific points: its initial appearance and its current location.

To convey the intended meaning more accurately, it would be more appropriate to use the word "farther" instead of "further." "Farther" is specifically used when comparing physical distances. Therefore, a more appropriate revision would be:

"The lighthouse is farther away than it first appeared."

By making this correction, the sentence becomes more clear and correctly conveys that the lighthouse is currently at a greater physical distance than it initially appeared to be.