Q. What is happening on a car’s rearview mirror when you flip the little lever for night driving to reduce glare from cars behind you? P.H., Gurnee A. You are talking about the mechanically operated ...

By Isaac MegbolugbeIntroductionAs I reflect on the true meaning of Christmas, I am struck by the paradoxes that surround us. The incarnation of God in the person of Jesus Christ defines the purpose ...

Right angle prisms are simply triangular blocks of glass with two 45° & one 90° angles. The precision grade right angle prisms have high surface quality and tight tolerance angles. The normal use for ...

Rotate and reverse images and deflect light at 90° bends. Suitable for telescopes and any optical instrument that requires the image to be flipped from the objective, turned over to the right, and ...

Reviews and recommendations are unbiased and products are independently selected. Postmedia may earn an affiliate commission from purchases made through links on this page. It seems the terrorists ...

Analysis - As I reflect on the true meaning of Christmas, I am struck by the paradoxes that surround us. The incarnation of God in the person of Jesus Christ defines the purpose and meaning of ...