virtual image

Examples of virtual image in the following topics:

• Image Reflection by a Plane Mirror

  • A mirror is a reflective surface that bounces off light, thus producing a real or virtual image.
  • An image formed by reflection may be real or virtual.
  • A "virtual" image occurs when light rays do not actually meet at the image.
  • A virtual image is right side up (upright).
  • These diagrams can be used to find the position and size of the image and whether that image is real or virtual.

• Image Formation by Spherical Mirrors: Reflection and Sign Conventions

  • This image that appears to be behind the mirror is called the image.
  • An image formed by reflection may be real or virtual.
  • A virtual image occurs when light rays do not actually meet at the image.
  • A virtual image is right side up (upright).
  • For a convex mirror, the image is virtual and upright.

• The Telescope

  • The image is focused at point 5, and the observer is shown a brighter, magnified virtual image at point 6.
  • Reflecting telescopes, such as the one shown in , use either one or a combination of curved mirrors that reflect light to form an image.
  • (The distance from the mirror to the focal plane is called the focal length. ) A sensor could be located here to record the image, or a secondary mirror could be added to redirect the light to an eyepiece.
  • Catadioptric telescopes, such as the one shown in , combine mirrors and lenses to form an image.
  • The combination of an objective lens 1 and some type of eyepiece 2 is used to gather more light than the human eye is able to collect on its own, focus it 5, and present the viewer with a brighter, clearer, and magnified virtual image 6.

• Holography

  • Holography is an optical technique which enables three-dimensional images to be made.
  • Holography is a technique which enables three-dimensional images to be made.
  • The image changes as the position and orientation of the viewing system changes in exactly the same way as if the object were still present, thus making the image appear three-dimensional.
  • The image this effect produces in a person's retina is known as a virtual image.

• Virtual Worlds

  • Further, virtual worlds can emerge when people who know each other in reality engage virtually through online messaging services like AOL Instant Messenger and Google Chat.
  • Many studies of virtual worlds have questioned the virtual world's ability to convey nuanced emotional messages as people do in face-to-face interactions.
  • Certainly, users have developed techniques in the virtual world to communicate emotion.
  • While emoticons obviously do not convey the same range of mixed emotions as a human face, it is clear that participants in virtual worlds are innovating with language and images to develop new forms of communication.
  • While interaction with other participants in virtual worlds can often be done in real-time, time consistency is not always maintained in online virtual worlds.

• Role Theory

  • Many studies of virtual worlds have questioned the virtual world's ability to convey nuanced emotional messages as people do in face-to-face interactions.
  • Certainly, users have developed techniques in the virtual world to communicate emotion.
  • While emoticons obviously do not convey the same range of mixed emotions as a human face, it is clear that participants in virtual worlds are innovating with language and images to develop new forms of communication.
  • While interaction with other participants in virtual worlds can often be done in real-time, time consistency is not always maintained in online virtual worlds.
  • This image shows that elderly people can be active, social, and in good spirits.

• Defining Social Media

  • Data has shown that a tweet that includes an image has a 150% more chance of being shared.
  • Users are usually restricted to posting a few lines of text, or uploading individual images and videos.
  • Content Communities: Users on content communities organize, share and comment on different types of content, including images and videos.
  • Facebook), virtual game worlds (e.g.
  • World of Warcraft), and virtual social worlds (e.g.

• E-Mail as an Entry Point

  • Virtually every business and individual with internet access has an email account of some sort.
  • Emails are files sent from one computer to another, and those files can contain virtually anything, including executable files.
  • This image shows the transmission of an email from one device to another.

• Virtual Teams

  • A virtual team is a temporary group created to accomplish specific tasks by using technology to collaborate remotely.
  • A virtual team is a group of individuals in different geographic locations who use technology to collaborate on work tasks and activities.
  • Virtual teams require effective project management to facilitate communication and coordinate member activities.
  • Relationships: Virtual team members need to build relationships with colleagues through the use of technology, which can often seem impersonal.
  • Differentiate among the six most common types of virtual teams and discuss the challenges they face

• Digital Art

  • The impact of digital technology has transformed activities such as painting, drawing, sculpture, and music/sound art, while new forms (such as net art, digital installation art, and virtual reality) have become recognized as artistic practices.
  • Digital art can be purely computer-generated or taken from other sources, such as scanned photographs or images drawn using graphics software.
  • Digital painting is created in a similar fashion to non-digital painting, but using software and digitally outputting the resulting image.
  • In this case, however, the image is on the computer screen and the instrument used to draw might be a stylus or mouse.
  • Another kind of digital video art is 3D computer graphics, where the screen becomes a window into a virtual environment of arranged objects that are "photographed" by the computer.