(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.
Progressive lenses, also called multifocal lenses, progressive addition lenses, varifocal lenses, progressive power lenses, graduated prescription lenses, or progressive spectacle lenses are corrective lenses used in eyeglasses to correct presbyopia and other disorders of accommodation. They are characterised by a gradient of increasing lens power, added to the wearer's correction for the other refractive errors. The gradient starts at the wearer's distance prescription, at the top of the lens a