What is special in 3D :
3D the short fo3D the short form of the word 3 dimensional.It is the most trendy topic in the modern technology. it means that viewing an object in three dimension that in the x. y and z axis respectively. that's nothing but what we are seeing our atmosphere with our eye to re create that effect in the entertainment the invention of 3d had occurred and now it has many more application some are listed here :
3d movies :
This was the first step of man in the field of 3d here the images are projected in different axis and by looking at the images through glass ( specially designed to view 3d) the image looks real. 3d printing: yes this is modern trend in 3d technology here images made using 3d cad programs can be printed into real things.and now a days many 3d printers are available for very cheap rates.