404. That’s an error.

The requested URL /translate_c?depth=1&rurl=translate.google.com&sl=en&sp=nmt4&tl=pl&u=https://en.wikipedia.org/wiki/Beam_splitter&xid=17259,15700021,15700043,15700186,15700190,15700256,15700259,15700262,15700265&usg=ALkJrhiq4TkO9eShNZaGnQAHkl1AJaknDA was not found on this server. That’s all we know.