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2. List of soft contact lens materials - Wikipedia

   en.wikipedia.org/wiki/List_of_soft_contact_lens...

   The US Food and Drug Administration (FDA) defines soft contact lenses as: made of soft, flexible plastics that allow oxygen to pass through to the cornea. Soft contact lenses may be easier to adjust to and are more comfortable than rigid gas permeable lenses. Newer soft lens materials include silicone-hydrogels to provide more oxygen to your ...

3. Contact lens - Wikipedia

   en.wikipedia.org/wiki/Contact_lens

   Contact lens. A pair of contact lenses, positioned with the concave side facing upward. Putting contacts in and taking them out. One-day disposable contact lenses with blue handling tint in blister-pack packaging. Contact lenses, or simply contacts, are thin lenses placed directly on the surface of the eyes. Contact lenses are ocular prosthetic ...

4. Telescopic sight - Wikipedia

   en.wikipedia.org/wiki/Telescopic_sight

   A telescopic sight, commonly called a scope informally, is an optical sighting device based on a refracting telescope. [ 1] It is equipped with some form of a referencing pattern – known as a reticle – mounted in a focally appropriate position in its optical system to provide an accurate point of aim.

5. Free-space optical communication - Wikipedia

   en.wikipedia.org/wiki/Free-space_optical...

   At the top right corner is a monocular for assisting the alignment of the two heads. Free-space optical communication ( FSO) is an optical communication technology that uses light propagating in free space to wirelessly transmit data for telecommunications or computer networking. "Free space" means air, outer space, vacuum, or something similar.

6. Specification (technical standard) - Wikipedia

   en.wikipedia.org/wiki/Specification_(technical...

   Specification (technical standard) A specification often refers to a set of documented requirements to be satisfied by a material, design, product, or service. [ 1] A specification is often a type of technical standard . There are different types of technical or engineering specifications (specs), and the term is used differently in different ...

7. GippsAero GA8 Airvan - Wikipedia

   en.wikipedia.org/wiki/GippsAero_GA8_Airvan

   GippsAero GA8 Airvan. The GippsAero GA8 Airvan 8 is a single-engined utility aircraft manufactured by GippsAero (formerly named Gippsland Aeronautics) of Victoria, Australia. It can seat up to eight people, including the pilot. The GA8 has been designed for use in remote areas and from austere air strips, performing tasks such as passenger ...