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Google Earth
Google Earth is a virtual globe that offers aerial, satellite, and geographical information of the Earth. it also includes a map of Mars, a flight simulator and a constellation map.
538 Questions
How do you update a Google Earth image?
You can't update these yourself, but they are updated by Google every 1-3 years.
You can, however, add your own content (placemarks, image overays, etc.) to Google Earth or find other user-content in KML or KMZ files.
Google Earth was first released as Google Earth 3.0 on June 28, 2005.
Previously it was known as the Keyhole Earthviewer (created in June 2001), which became the basis for Google Earth after Google acquired Keyhole in Oct 2004.
Where does Google Earth imagery come from?
Google gets its imagery from a variety of sources such as commercial satellite providers such as DigitalGlobe and GeoEye as well as from government and local agencies. Once the imagery is acquired by Google, it next has to be processed into the format and coordinate system of Google Earth's databases. Then it goes through a quality control process and processing system before getting distributed to the Google Earth database servers. This is one reason you usually do not find any imagery newer than about 6 months in Google Earth.
How far can Google Earth zoom in?
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.
How do you download old versions of Google Earth?
The previous version of Google Earth (7.0) can be downloaded from the normal Google Earth download page by clicking 'Advanced setup'. This requires several mouse clicks.
A more direct approach is using the direct installer links to download the previous versions (7.0, 6.0, 6.2, 6.1, 6.0, 5.2, 5.1) for Windows and Mac. This web page also has links to download GE Pro versions as well. As of the 6.0 release the 5.0 and 4.3 versions are no longer available.
Note that street view is only supported in GE versions 6 and higher.
See related links section.
Is it possible to measure area using Google Earth?
Yes. Google Earth Professional also allows you measure area, but it is expensive. Alternatively you can use the free version of Google Earth, mark the area to be measured as a path. Then save it as a kml file. Programs like EasyAcreage can then read these kml files and calculate the acreage for you. This method is remarkably accurate. See a case study where the accuracy of this method was used to measure the size of a tennis court.
The KML Tools Project and Zonums area tool (in links below) is an easy way to measure area online.
Can you use Google Earth Images on a website?
Google allows use of screen shots on public web sites if you follow its guidelines (see links below) including unaltered images with full attribution, etc.
Three requirements from Google's permission guidelines:
- All uses of Google Maps and Google Earth and its Content must provide attribution to Google and our suppliers.
- Google does not approve of any use of Content without proper attribution.
- Depending on the region, the Content provider may be Google alone or Google and one or more 3rd party providers.
How do you find Santa's house on Google Earth?
NORAD's Santa tracking website is only active from December 1 until Christmas day. On Christmas eve the web site has real-time updates of Santa's travels around the world.
During the month of December enjoy but for the rest of the year you'll have to wait until next year. See link found in related links below.
In the meanwhile try searching for "Santa Tracker" on YouTube to see the recorded video.
Where is the tool bar on Google Earth?
In View menu you can enable/disable the Toolbar. Select 'Toolbar' option to bring it back.
Why negative earth and not positive earth on a vehicle?
The electrical term "earth" or "ground" is a connection that runs through the entire electrical system. It may or may not be connected literally to the soil. When a system is "negative earth", it means the electrical earth has a negative polarity. Power can then be run back and forth using only one wire carrying the positive polarity. Similarly, electrical signals need only one wire. At the destination, the circuit is completed by connecting the "negative" terminal to earth or ground.
Until the 70s, cars were built with either a positive or negative earth, with popular British vehicles being among the last to be built with positive earth. Negative earth was adopted globally by automobile manufacturers for the sake of standardization. It was the introduction of radios in automobiles that may have seen negative earth automobiles being favoured. It was also thought positive earth vehicles rusted quicker.
The US telephone system also uses a positive ground, after starting out with negative ground. However, the trolley cars in Atlanta, Georgia were causing electrical induction interference, which led to the phone cables literally falling apart. Every kind of solution was tried, but they all failed, until as a last resort the phone company flipped the polarity, and it has stayed this way till the present day.
What is the best free Google Earth to download?
Google Earth is a virtual globe, map and geographic information program that was originally called EarthViewer 3D. It maps the Earth by the superimposition of images obtained from satellite imagery, aerial photography and GIS 3D globe. It is available under three different licenses: Google Earth, a free version with limited functionality; Google Earth Plus, which included additional features; and Google Earth Pro ($400 per year), which is intended for commercial use.
You can download the free version from the link mentioned in the related links.
How do you make Google Earth show current time?
If an opened KML file has a placemark that contains time information then the time slider is displayed automatically.
Likewise, if you select 'Historical Imagery' then a time slider allows you to select the time interval for the map imagery.
See related links for tutorial using the time slider controls.
How do you use the brakes on Google Earth flight simulator?
Comma (,) for the left brake, and period for the right brake (.)
How can you give updated information to Google Earth?
Google providers a data error reporting form (via website) to submit corrections to google's imagery, street names, directions, and so forth.
By far the easiest way to provide updated information is through the new Google Map Maker tool. This allows you to directly move addresses to the correct location, change type of marker, etc. Submissions get reviewed and if approved get pushed back out to Google Earth and Google Maps.
No, Google Earth Pro is the paid professional version that costs $399 per year.
It does have a free 7-day trial period to use and evaluate after which you need to convert trial license into full license.
Note that Pro and free version both use the same high-resolution imagery.
*UPDATE* as of Jan 30, 2015 Google made Google Earth Pro available for free. Login with your email address and the license key GEPFREE and that's it.
Is Google Maps free to download?
Google Maps is a website you visit in your web browser. There is no software to download like you do for Google Earth. Both Google Maps and Google Earth are free to use.
See URL in related links below.
Which mouse control will zoom in or zoom out in Google Earth?
In Google Earth the keyboard controls for Zoom are as follows:
Zoom In: + (plus) key, PgUp key
Zoom Out: - (minus) key (both keyboard and numpad), PgDn key
Tip: to use the 'Page Down' key, make sure 'Num Lock' on your keyboard is off.
Also, the Scroll wheel on the mouse can zoom in and out.
Why is Google earth on the iPhone better than Maps on the iPhone?
Really google earth is not better than maps google earth on iphone/itouch is slugish and does not run very fast unless you have a good service in the area i recomend sticking to maps on your iphone it's better for portable phones.
Which geodetic system does Google Earth use?
Google Earth uses a "Simple Cylindrical projection," which is also known as Plate Carrée, with a World Geodetic System of 1984 (WGS84) datum.
This is a simple map projection where the meridians and parallels are equidistant, straight lines, with the two sets crossing at right angles.
Google Maps uses the Mercator projection also with the WGS84 dataum.
The vertical component (altitude) is measured from the vertical datum, which is the Earth Gravitational Model 1996 (EGM96) Geoid. Altitudes are measured in meters.
Where can one download google desktop?
One can download this software by going to the software website. If you are not able to download the software there, there are many other websites that provide this software. Some websites that have this software available for download are the CNET download website and the Version Download website.
Can you see Mars on Google Earth?
I tried doing that and the Earth just disappeared. So, I'm guessing not. ----------------
I tried it and yes you can. This was on version 5.0.11733.9347. View--> Explore --> Moon. If that doesn't work try downloading the free Nasa program Worldwind.
How do you get the other planets in Google Earth 6?
As of Google Earth v5.0, you can see the surface of Mars and the Moon. It includes "Street View"-like imagery taken from lunar and Martian missions as well as videos from related landings. Change planet mode in the View menu under the Explore option or from a planet icon in the toolbar.
Also, in Google Earth's Sky mode you can see photos of galaxies and stars from various astronomy databases.
How do you show your airplane on Google Earth?
Flightwise (formerly FBOweb) introduced the ability to track flights in Google Earth. They created some special network links to show the approximate positions of all the in-bound flights for several major US airports. The tracks show the position as a placemark and a track of the last few minutes of the flight.
You can view the Flightwise web site for these Google Earth layers or use the direct link in the related link section below.
