Parallax is the observed displacement of an object caused by the change of the observer's point of view. In astronomy, it is an irreplaceable tool for calculating distances of far away stars. When you ...

What do the terms "optics" and "photonics" mean to you? Leading researchers have had their say - and now it’s your turn. It started off as an innocent enough question. Claire Bedrock, the publisher of ...

Parallax is a simple concept to understand, but as it relates to riflescopes it’s difficult to explain. According to Merriam-Webster, parallax is the apparent displacement or the difference in ...