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Because light can enter a lens from either side, a lens has a focal point on both sides. With mirrors, on the other hand, light only enters from one side, so they only have one focal point. the apex answer:
The centers of curvature of the two sides of the lens The material the lens is made from
Wiki User
∙ 9y ago
Wiki User
∙ 11y agoThe two lenses used are known as a crown & flint. The combination allows bringing more of the complete spectrum of light to the same focus, reducing chromatic aberration (color fringeing). Some modern refractors use ED or fluorite glass & three or more elements to eliminate chromatic aberration. While these designs are more costly, they allow for shorter focal length (f ratio) telescopes that are smaller & easier to transport.
Wiki User
∙ 12y agoBecause a light ray traversing the lens encounters a change of medium twice ...
once from air to glass, and again from glass to air. Refraction occurs each time
there is a change of the transmission medium.
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What was the two lenses called on the refracting telescope?
Front lens - objective Back lens - eyepiece
What is a barlow lens on a telescope?
A barlow lens increases the magnification of the eyepiece usually by a factor of two.
What is the difference between a refracting telescope and a?
A refracting or refractor telescope is a dioptric telescope that uses a lens as its objective to form an image. The refracting telescope design was originally used in spy glasses and astronomical telescopes but is also used in other devices such as binoculars and long or telephoto camera lenses.There are two basic types of telescopes, refractors and reflectors. The part of the telescope that gathers the light, called the objective, determines the type of telescope. A refractor telescope uses a glass lens as its objective. The glass lens is at the front of the telescope and light is bent (refracted) as it passes through the lens. A reflectortelescope uses a mirror as its objective. The mirror is close to the rear of the telescope and light is bounced off (reflected) as it strikes the mirror
How many lenses does a telescope have?
In a simple model there are two: the objective lens and the eyepiece lens
Was the telescope created by accident?
The first telescope was invented by Hans Lipperhey , a Dutch lens grinder, in 1609 when he combined two lenses.
What are the names of the two converging lenses that are used to make a simple telescope?
1. The Objective Lens. 2. The Eyepiece Lens.
How are reflecting and retracting telescopes different?
A reflecting telescope is different from a refracting telescope because a reflecting telescope uses a concave lens, a plane mirror, and a convex lens. While a refracting telescope uses two lens.
What was the two lenses called on the refracting telescope?
Front lens - objective Back lens - eyepiece
What is a barlow lens on a telescope?
A barlow lens increases the magnification of the eyepiece usually by a factor of two.
What is the difference between a refracting telescope and a?
A refracting or refractor telescope is a dioptric telescope that uses a lens as its objective to form an image. The refracting telescope design was originally used in spy glasses and astronomical telescopes but is also used in other devices such as binoculars and long or telephoto camera lenses.There are two basic types of telescopes, refractors and reflectors. The part of the telescope that gathers the light, called the objective, determines the type of telescope. A refractor telescope uses a glass lens as its objective. The glass lens is at the front of the telescope and light is bent (refracted) as it passes through the lens. A reflectortelescope uses a mirror as its objective. The mirror is close to the rear of the telescope and light is bounced off (reflected) as it strikes the mirror
How many lenses does a telescope have?
In a simple model there are two: the objective lens and the eyepiece lens
Was the telescope created by accident?
The first telescope was invented by Hans Lipperhey , a Dutch lens grinder, in 1609 when he combined two lenses.
What tool besides a telescope in a science lab uses two convex lens?
Microscope
What uses a lens and two mirrors?
Reflecting TelescopeA reflecting telescope uses a lens and two mirrors. The lens is positioned at the eyepiece, and thus the focus, which the two mirrors generated by specifically redirected light. There are two types of reflecting telescopes with one lens and two mirrors, the Newtonian Focus and the Cassegrain Focus.
What uses two lens and mirror?
Reflecting TelescopeA reflecting telescope uses a lens and two mirrors. The lens is positioned at the eyepiece, and thus the focus, which the two mirrors generated by specifically redirected light. There are two types of reflecting telescopes with one lens and two mirrors, the Newtonian Focus and the Cassegrain Focus.
I asked this question before but I didn't get the right answer I want to know how your eyes are similar to a telescope and how they are different I don't want to know about binoculars?
i can understand when you don't get the answer you want so here is the answer: our eye works simillar to telescopes because telescope uses convex lens to create a perfect magnified focused image and the eye too uses convex lens to focus the image however our eye rarely uses the lens to magnify image our eye's lens can autofocus near and far objects which is known as eye accomodation with bulging and stretching of eye's organic lens; decreasing and increasing the focal length of the eye lens whereas this flexible lens is not used in telescope instead two lenses are used.
What are Johannes Kepler's inventions?
Johannes Kepler made the keplerian telescope, which consists of two covex objective lens.
