Augmented reality (AR) is
the result of using technology to superimpose information, such
as sounds, images, and text on the world we see. It adds to what
we see. An example is Google glasses. It displays videos and
sounds onto the screen. The
heads-up displays in many fighter aircraft shows information
about the attitude, direction, and speed of the plane, and can
show which objects in the field of view are targets. Some cars
have begun showing a digital display on the windshield so
drivers do not need to look down at the dash.
Phones
and tablets offer AR, such as the Star Walk app, which
allows a user to point the camera at the sky and see the
names of stars and planets superimposed on the image.
Another app called Layar uses the smartphone's GPS and its
camera to collect information about the user's surroundings
and displays information about nearby restaurants, stores,
and points of interest. Another example is an app that
allows translation of signs into a user's own language.
Virtual reality (VR)
means computer-generated environments for you to interact with,
and be immersed in. It replaces what we see by using a head set
to block out the real world. As you move your head, the picture
or video moves in the same direction, allowing a person to view
a 360 degree virtual scene.
Researchers are
developing holograms, which can take VR and AR a step further,
since holograms can be seen and heard without a headset.
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