Although large refracting telescopes were oregon speed dating popular in the second half of the 19th century, for most research purposes the refracting telescope has been superseded by the Reflecting Telescope which allows larger apertures.
A refractor's magnification is calculated by dividing the focal length of the objective lens by that of the eyepiece. Lens optics is a transmissive optical device that focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses elementsusually arranged along a common axis.
Lenses are made from materials such as glass or plastic, and are ground and polished or moulded to a desired shape. A lens can focus light to form an image, unlike a prism, which refracts light without focusing. Devices that similarly focus or disperse waves and radiation other than visible light are also called lenses, such as microwave lenses, electron lenses, acoustic lenses, or explosive lenses.
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The three tasks were archerycaber toss and a two-on-one tug of war-esque game. All of the men excelled at the games except for Chris. Emily then awarded Chris the ""Bravery Cup"", much to Sean's dismay. At dinner, Sean, Jef, Arie and Chris were shown having alone time with Emily, all sharing kisses with her. Arie ended his alone time with Emily by pinning her against a wall and passionately kissing her.
Still, Arie's hopes of oregon speed dating a rose were dashed when Emily gave the group date rose to Chris. The other men in the house were annoyed with Ryan's pompous attitude.
Emily and Ryan went on a road trip together, where they went fishing for oysters.