(1) (txtwriter.com) Each ignites its own debate, so I will focus primarily on the role of the appendix in the human body. The appendix is present in many primates, and primarily (pun intended) used to aid in the digestion of cellulose. Located between the small and large intestines, the appendix and neighboring caecum slows down the body's digestive process.
Products / Optics / Optical Lenses / UV Lenses. UV Lenses. UV Lenses are used in many collimation, focusing, or laser applications that operate in, or extend into, the ultraviolet spectrum. UV Lenses are optical lenses consisting of a single or multiple elements that have been designed for optimal performance when used with ultraviolet light.
In photography, a lens hood or lens shade is a device used on the front end of a lens to block the Sun or other light source(s) to prevent glare and lens flare. Lens hoods may also be used to protect the lens from scratches and the elements without having to put on a lens cover.