When people walk by large windows, they sometimes stop to look at their reflections. Large windows are like big public mirrors. How does this work? Window glass is mostly transparent, but not all of the light passes through. Some of the light reflects back from the surface, which is good if ...
Four Types of Binoculars You Should NOT Buy
Let me ask you a question: Do you think the following are true or false? The higher the magnification, the better. (T/ F) Binoculars that are capable of zooming are the best. (T/F) Ruby-colored objective lenses are superior. (T/F) Focus-free or auto-focusing binoculars enable us to focus ...
