What focal length is Google Earth?

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The focal length of Google Earth is 31.2 mm.
The focal length f for a given field of view (FOV) is calculated as follows:
f = x/(2*tan(FOV/2))
Usually, x is the diagonal length of the picture and the FOV in photography is called the angle of view (also of the diagonal)
The formula is also valid for the horizontal or the vertical length of the picture.
The horizontal FOV in Google Earth is 60°. For the horizontal length of the film I assumed the usual 36 mm of ordinary film in photo cameras. With these values, the formula gives 31.2 mm.

Google Earth makes available the horizontal and vertical field of view in degrees via a NetworkLink. Click related link to launch dynamically generated KML that dumps all client properties of Google Earth client including the field of view. The horizontal FOV is fixed at 60° but the vertical changes with the aspect ratio of the client window.
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What is focal length?

focal length is the distance between your optic nerve and the retins in lense the distance between the optical and focus

What is the Focal length of a plane mirror?

Infinity.because the distance of object from mirror"p" and the distance from image to mirror"q" are equal,so by using formula 1/f=1/p+1/q we can find the answer as the image of plane mirror is virtual,so"q" is taken negative,so putting values 1/f=1/p-1/p(bcz p=q) 1/f=0 f=1/0 and any th ( Full Answer )

What is the ideal focal length for a satellite dish?

Infinity. Space is so far away from the dish that using a focal length of infinity is standard. Any focus adjustment is merely to account for changes in temperature of the dish (or telescope).

How do you calculate focal length?

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Why is the focal length of a plane mirror infinity?

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What is the medical application of the focal length?

By using the science of focal length, doctors are able to performultrasound focal beam surgery. This surgery is used in places suchas the brain where tissue and cell damage must be minimal.

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How do you measure focal length on view camera?

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Difference between focal point and focal length?

The focal point is the point where light converges after it passes through a concave lens. The focal length is the distance of the focal point to the lens. Same for a convex lens, except that the focal point is the imaginary point from where light deflected from lens seems to have emerged.

What is the Focal length of a concave mirror?

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How would you find the focal length of lens?

Have light from a very distant object directed through the lens onto an opaque, white surface. Change the distance from the lens to the projection surface until the distant object shows a sharp image on the surface. The distance from the lens to the surface at that point is the focal length.

How can you tell what the focal length is for a lens?

Easy way: Use it to form an image of the sun or moon, and measure the distance of the image behind the lens.. When the object is at infinity, the distance between the lens and the image is the focal length of the lens.

How to determine the focal length of group of lenses?

Measure the distance from the center of the lens to the area where it 1.)Produces a clear image of very distant objects, 2.) The Sun (Be careful!), 3.) The Moon, 4.) A bright star or planet.. The source needs to be at or near infinity. If you use a light source that is close to the lens, your resul ( Full Answer )

What is the focal length of goggles?

Goggles purchased "off the shelf" should not be refractive, i.e. should not have a 'focal length'. I suppose if you're a die-hard compulsive SCUBA diver, you could buy prescription goggles; then their focal length would be whatever suits your prescription. But for anything bought in a sports supply, ( Full Answer )

What is the meaning of focal length in a camera lens?

The focal length of a camera's lens refers to the the magnification or telephoto power of the lens and is expressed in the millimeters of the lens, like 100mm, 300mm, etc. . www.goldprints.com

What is Google Earth and Google Maps?

Google Earth is a 3D earth viewer (run as desktop or mobile application) and Google Maps is a web-based 2-D map viewer with street and satellite views. For desktop platforms, Google Earth is a standalone application that first must be installed while Google Maps is run from a web browser. Client a ( Full Answer )

How can you calculate the focal length of a lens?

Basically, the focal length is the distance from the center of the lens to the focal point or the principal foci. The calculations will depend on the curvature of the lens, the lens thickness, and the refractive index of the material that the lens was made out of. Wikipedia has a great descriptio ( Full Answer )

How to find out the focal length of a telescope for lens?

For most purchased telescopes, the focal length of the objective lens will be printed on the lens' mounting ring, and it will definitely be stated somewhere on the packing box and in the literature that comes with it. The focal length of any unknown lens can be measured by using the sun, the ( Full Answer )

What effect does focal length have on Depth of field?

Longer focal lengths produce less depth of field than short ones. If you search, you will probably find sites that claim the difference is negligible in most cases. It seems they think that (for example) the perception that a telephoto lens has much less depth of field is due to how that lens compre ( Full Answer )

How does the focal length of the human eyeball change?

The "eyeball" doesn't have a focal length, any more than the body of a camera or the tube of a telescope have. It's the lenses (or mirrors) in the eye, camera, and telescope that have focal lengths. In the eye, the focal length of the lens changes when the shape of the lens changes ... becomi ( Full Answer )

What website from Google is Google Earth?

Some websites use the Google Earth plugin and visiting such awebsite would prompt you to download the plugin from Google if youdon't already have Google Earth plugin installed. This is installedwhen you install the Google Earth application. If you want to download the Google Earth application it ca ( Full Answer )

What is the focal length of sunglasses?

The focal length of a Sunglass lens is theoretically infinite. It is because the radii of curvatures of the front and back surfaces are equal.

What factors can affect the focal length of a lens?

There are many factors affecting the focal length of a lens, these include: - The thickness of a lens. - The curviture of a lens. - The material the lens is made out of. E.g. Glass or plastic. - The light intensity going through the lens. - The shape of the lens. These, are just few of the many fa ( Full Answer )

What is the value of focal length of plane mirror?

Infinity.because the distance of object from mirror"p" and the distance from image to mirror"q" are equal,so by using formula 1/f=1/p+1/q we can find the answer as the image of plane mirror is virtual,so"q" is taken negative,so putting values 1/f=1/p-1/p(bcz p=q) 1/f=0 f=1/0 and any th ( Full Answer )

What are the factors affect on focal length of lens?

There are three factors affecting the focal length of a lens. 1. refractive index of the material of lens. 2. refractive index of the surrounding medium 3. the radius of curvature of the lens surfaces.

What does Google describes Google Earth as?

Google describes Google Earth as a tool " allowing you to travel the world through a virtual globe and view satellite imagery, maps, terrain, 3D buildings, and much more. " They also say " Google Earth is simply your ticket to explore the Universe ". . The latter claim is because Google Earth is ( Full Answer )

How is Focal length measured in terms of light?

There are quite a few methods available to measure focal length, some of which are: using quick estimates, Nodal Slide mode, Talbot and Cornu. The easiest and fastest method to use would be the estimate method whereby you hold the lens under a light and manouver the lens until one sees the clear an ( Full Answer )

Why does a convex mirror have a negative focal length?

Basically because, in a convex mirror, the curvature is the opposite of that of a concave mirror. It's bevaviour is opposite, too: incoming light is spread out, instead of being focussed.

What is the meaning of focal length in camera?

Lenses with focal lengths less than 50mm are referred to as wide-angles - simply because they have a wider angle of view. Lenses with focal lengths greater than 50mm are known as telephotos, and these offer greater magnification thanks to their much narrower angle of view.