Times, Sunday Times (2010) His caustic comments make wonderful copy, of course. Times, Sunday Times (2009) But over ten years, audiences have become less able to accept her caustic humour. The Sun (2010) Doctors feared she would die from horrific injuries caused by the 98 per cent strength caustic soda.
Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines.
In optical instruments, such as telescopes or microscopes, parallax results from the observerâs eye movement in front of the eyepiece when the graticule or cross hair used for measurement is not in the same plane as the image produced by the objective. The concept of parallax plays an important role in astronomy.