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 ...

THE application of a reflector to pass light back through a prism, or prisms, is usually ascribed to Littrow. Thus Kayser writes (“Handbuch der Spectroscopie”, Bd. I., p. 513), “Der Erste, der Rükkehr ...

A right angle prism is an optical prism designed to deviate light by 90° or 180°, depending on the orientation of the prism and the face through which light enters. The joining edges and faces are ...

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 ...