What is the difference between real and virtual images?
154725
The difference is....if you place a screen where the images is suppose to be and you can actually see an image, then it's real. Otherwise it's virtual.\n\nThis applies to diverging lenses, among others.\n\nAs much as I dislike using websites in my responses, sometimes it can't be avoided....like now.\n\nIn the link below, about half way down it talkes about a little a virtual image.\n\nHope this helps you.
96084
Only real images can be projected since imaginary images only make light appear to originate from a point, light actually does pass through the real images location.
928848
What's not clear is whether the image is a virtual or real one.\n\nFirst, consider a quick graphical, geometrical ray trace of a focusing \nmirror (let's assume it's spherical so that the analysis is simple).  I \nusually do this by drawing the reflector and locating its center of \ncurvature and focal point (which is just half the distance from the middle \nof the sphere to the center of curvature).  To look at image formation, I \ndraw a large number "1" where the object should be -- in this case, \noutside the focal point.  I then draw two rays from the top of the "1" -- \none parallel to the line from the center of the sphere throught the radius \nof curvature and one through the radius of curvature.  The first ray must, \nafter reflection, go through the focal point (because it acts as a \nparallel ray from infinity, which are all focused at the focal distance \nfrom any optic).  The second must just come back upon itself, because it \nis perpendicular to the reflector surface.  The intersection of the two \nrays is where the head of the image "1" is located.  In this case, it's \noutside the focal point.  I then do the same thing from the bottom of \nthe "1", and then draw the orientation of the imaged "1"...  It's clearly \ninverted and reduced in size and more than 1 focal length away from the \nmirror.  This is clearly the real image you referred to in your question.  \n\nWhere's the virtual image?  It's not there!  What you're observing is the \nreal image.\n\nTo understand this, consider what a virtual image is and how it's formed \nby an example.  A virtual image does NOT result from the convergence of \nray bundles at any real point in space... A virtual image is observed when \na situation arises rays from a single point appear to emerge from a point \nin space, but which doesn't correspond to any real point.  A good way to \nsee this is to turn the spoon around and look at the convex surface.  You \nsee yourself right side up!  If you do the ray trace using the method I \noutline above, you find an apparent convergence of rays behind the mirror \nwhich produces an upright image, which is just what you see in this case.  \nBut, since the spoon is silver, it's pretty apparent that there can't be \nany rays actually focused behind it -- so it's a virtual image.\n\nAn interesting thing occurs, however, when you flip the spoon back to the \noriginal configuration and move the object inside the focal point.  The \nimage you see is no longer inverted! And it's big!  If you do the ray \ntrace you find that the convergence of the rays which form the image is \nnow in back of the spoon, so that the image has shifted to an upright \nvirtual image which is magnified.  Try it with one of your spoons -- it \nreally works!\n\nAnd even more interestingly, if the object were placed exactly at the \nfocal point, all hell would break loose and what you would see would be a \ngiant blob filling the spoon that looks like nothing but a big source of \nlight.  In this case, there is neither a virtual nor a real image formed \nand the mirror/spoon is acting like a collimator -- turning all rays from \nthe object into parallel light streaming to infinity (roughly).\n\nI hope this helps!
643628
There is a couple of programs that allow to load or run a file in an Image Format. One of them is "Daemon Tools". You can find it in this URL http://www.daemon-tools.cc  This tool acts as a virtual drive, where you can mount any kind of image. An image file is a simulation of a real CD or DVD. So, combining the image and the tool, is the same as if have the original CD inserted in a real CD Drive, which is virtual in the tool.\n\nRegards,\n\nFreddy Gonzalez, Dominican Republic
710337
I am not sure what operating system you are using, but if you are using Windows 2000, Me or 98 then you may have an option to turn off Virtual Desktop.  Virtual Desktop was a setting used in conjunction with Internet Explorer and enabled many different types of backgrounds (jpeg files etc.)  it also used a lot of resources and cancels out any images you may have already chosen for a background.\n\nRight click on your desktop, see if there is a checkmark next to Virtual Desktop.. uncheck it and it should show your original background.  If you don't see it on the right click menu, go to your Desktop properties and under one of those tabs should be an option to disable virtual desktop.\n\nI apologize for not having precise step-by-steps but I have been using XP for a while and am going from memory.\n\nHope that helps some.
871576
The difference between a raster and vector graphic is this ...\nRasters are made up of pixels, which are the smallest colour dot that an image can contain, because of such, when you zoom into a raster image, you will see "jaggies" which are the little colour blocks (easily seen on circular edges) which make up the image ...\n\nVector graphics however, look the same for the most part, but they are made up by a set of commands, because this set of commands stays the same, when you zoom into a vector graphic, your computer will recalculate the image based on those commands and "redraw" it for you, therefore, in theory, u should be able to zoom into a vector graphic forever, and see no "pixilation" on the screen.
1161328
Great chart can be found here:\n\nhttp://en.wikipedia.org/wiki/Comparison_of_graphics_file_formats
843413
depends on the quality of the photo file ie x by y pixels.
471363
A hologram is a 3d image of an object.  If you look at one you may try to reach out and touch it but nothing is there.\n\nWe don't actually see objects, we see the light that is reflected from them.  If that light is bent somehow the image will change and the appearance of the object will be different than the case of no interference.  We try to extrapolate what was actually there based on the light that reaches our eyes (and the extrapolation is distorted if the light gets bent).\n\nIn short, the mirage is a real image, but it is not a real object.
662452
.bmp is a reference to a graphic picture just like .jpeg is so at the end of the day you have a graphic file called ole0.bmp
708522
well, your question is a little fuzzy but let's give it a shot:\n\nvirtual memory is just some space on your hard disk. It is used when the real memory runs out; a program that is not currently active/running but loaded into memory can be 'swapped out': it is saved to the hard disk (virtual memory) and will be read in again when it is needed. This way the computer can pretend it has more memory than it actually has.\n\nNow if you open a very heavy webpage on a system that is already low on memory it is quite possible the the computer needs to save some other programs to the virtual memory.\n\nDoes this help?
1162174
Its a image that is not "dynamic" meaning it doesn't move around, has no real interactivity; its just a image.
1079262
well, Norton Ghost V 9&10 are unreasonably expensive\nand often even worse in comparison with another softwares, for example as in True Image case(ATI is 20$ cheaper).\nso, i recommend u True Image as one above\nbut, anyway it's up to u choose.\nsomehow, i came across with article, compairing \nAcronis True Image Vs Norton (syamntec) Ghost(Head to Head). quite interesting.
166970
Definitions of Realism on the Web:\n\nA style of painting which depicts subject matter (form, color, space) as it appears in actuality or ordinary visual experience without distortion or stylization.\nwww.progressiveart.com/art_terms.htm\n\na theatrical practice valuing direct imitation, concerned with psychological motives, the 'iiner reality," and less committed to achieving a superficial verisimilitude.\nact.vtheatre.net/dict.html\n\nA very general style in which the artwork accurately depicts nature. The term originated in 19 th century France, specifically with the painter Gustave Courbet. The style was popular through the 1950’s, when it was almost eliminated from critical consideration. It resurfaced in the 1960’s with Pop Art and the "new realism."\nart.abbottpages.com/glossary.html\n\na variety of doctrines in different areas of philosophy holding that entities or facts of contested sorts exist. There are, of course, different arguments concerning the reality of numbers in mathematics, the reality of moral facts in ethics, and the reality of time in physics or metaphysics. The kind of reality ascribed to universals differs from the kind of reality seen as belonging to common-sense material objects or to theoretical entities in science. ...\nwww.filosofia.net/materiales/rec/glosaen.htm\n\nin epistemology, the doctrine that the external world exists independently of perception; in logic, the doctrine that universal or class ideas (eg, man) have objective realities corresponding to them.\nwww.willdurant.com/glossary.htm\n\nA STYLE of art in which the subject is portrayed as closely as possible to the way the human eye sees it.\nwww.artsmia.org/art_in_america/glossary.html\n\na depiction of existence as it appears, without euphemism or evasion; evokes the idea that the things or occurrence that are portrayed may actually exist. A key component of naturalist writing.\nsunsite.berkeley.edu/London/Essays/glossary.html\n\nthe attempt to represent people, objects, or places in a realistic manner as opposed to an idealized way; also, a later 19th century art movement in France which objected to the idealized style of Romanticism by creating works that depicted a more true view of everyday life. Realism art from worldimages gallery\nwww.worldimages.com/art_glossary.php\n\n1. A type of representational art in which the artist depicts as closely as possible what the eye sees. 2. The mid-nineteenth-century style of Courbet and others, based on the idea that ordinary people and everyday activities are worthy subjects for art; a concern for fact or reality and rejection of the impractical and visionary. The realists sought to render everyday characters, situations, dilemmas, and events; all in an "accurate" (or realistic) manner. ...\nwww.marilynfenn.com/glossary_art_styles.html\n\nAn art style popular in the mid 1800's in which artists painted ordinary objects, people and scenes as they actually were. The artists made no attempt to romanticize the figures or add drama to the settings.\nwww.brigantine.atlnet.org/GigapaletteGALLERY/websites/ARTiculationFinal/MainPages/O-RVocabulary.htm\n\nIn the arts, the accurate, detailed, unembellished depiction of nature or of contemporary life. Realism rejects imaginative idealization in favor of a close observation of outward appearances.\nworldartistdirectory.com/artstyles.html\n\nThis word, in terrns of game systems, can have various, subtly divergent, meanings. Early in the history of role-playing, it was often taken literally, so that criticisms of rules as 'unrealistic' were dismissed with the comment that magic and the like, which loom large in games, are not 'real'. ...\nwww.mud.co.uk/richard/ifan394.htm\n\nThe doctrine of Realists as opposed to Nominalists; the doctrine that physical objects have reality independently of psychological factors, opposed to the idealism of philosophers such as Berkeley; a matter-of-fact attitude, as oppos
289008
well its a class but not a real one. its a virtual one :-)
1064452
just look at the properties of that image\nbut remember the image must be on the net\nu cannot get the url in the properties of the image at the computer
246101
Any arts, depending on program you choose and your skill and creativity of course. Like Adobe Photoshop, it can make painting arts, 3d Max can create 3d pictures. But computers can't create sculptures or other 3d objects. Maybe special-purpose computer can make 3d objects, but usual computers can't. I mean that comp can't make REAL objects, but creating 3d objects pictures comp can.