"Eyepiece" is a word in ENGLISH

eyepiece ENGLISH
Definition:

The lens, or combination of lenses, at the eye end of a
telescope or other optical instrument, through which the image formed
by the mirror or object glass is viewed.

Few words of positivity

If the thought of losing someone doesn't scare the shit out of you, then it's not love

Penelope Ward, My Skylar

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Laugh your heart out.

An armless man walked into a bar which is empty except for the bartender. He ordered a drink and when he was served, asked the bartender if he would get the money from his wallet in his pocket, since he has no arms. The bartender obliged him. He then asked if the bartender would tip the glass to his lips. The bartender did this until the man finished his drink. He then asked if the bartender would get a hanky from his pocket and wipe the foam from his lips. The bartender did it and commented it must be very difficult not to have arms and have to ask someone to do nearly everything for him. The man said, "Yes, it is a bit embarrassing at times. By the way, where is your restroom?" The bartender quickly replies -, "The closest one is in the gas station three blocks down the street."

aberration ENGLISH

The convergence to different foci, by a lens or mirror, of rays of light emanating from one and the same …

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achromatism ENGLISH

The state or quality of being achromatic; as, the achromatism of a lens; achromaticity.

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alethoscope ENGLISH

An instrument for viewing pictures by means of a lens, so as to present them in their natural proportions and …

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amasthenic ENGLISH

Uniting the chemical rays of light into one focus, as a certain kind of lens; amacratic.

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aphakia ENGLISH

An anomalous state of refraction caused by the absence of the crystalline lens, as after operations for cataract. The remedy …

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aplanatic ENGLISH

Having two or more parts of different curvatures, so combined as to remove spherical aberration; -- said of a lens.

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astigmatism ENGLISH

A defect of the eye or of a lens, in consequence of which the rays derived from one point are …

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biconvex ENGLISH

Convex on both sides; as, a biconvex lens.

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bubble ENGLISH

A globule of air, or globular vacuum, in a transparent solid; as, bubbles in window glass, or in a lens.

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bull's-eye ENGLISH

A lantern, with a thick glass lens on one side for concentrating the light on any object; also, the lens …

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An apparatus in which the images of external objects, formed by a convex lens or a concave mirror, are thrown …

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capsule ENGLISH

A membranous sac containing fluid, or investing an organ or joint; as, the capsule of the lens of the eye. …

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cataract ENGLISH

An opacity of the crystalline lens, or of its capsule, which prevents the passage of the rays of light and …

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chromatism ENGLISH

The state of being colored, as in the case of images formed by a lens.

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collimator ENGLISH

A tube having a convex lens at one end and at the other a small opening or slit which is …

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Specifically, having such a combination of concave and convex sides as makes the focal axis the shortest line between them. …

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condenser ENGLISH

A lens or mirror, usually of short focal distance, used to concentrate light upon an object.

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couch ENGLISH

To treat by pushing down or displacing the opaque lens with a needle; as, to couch a cataract.

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couching ENGLISH

The operation of putting down or displacing the opaque lens in cataract.

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diacaustic ENGLISH

That which burns by refraction, as a double convex lens, or the sun's rays concentrated by such a lens, sometimes …

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