Adobe photoshop : mirror reflections

Many people these days are enamoured with the latest craze of photographing products on a glass surface with the product reflecting a very smooth, liquid reflection. Apple made it popular with their iPhone imagery.

In the old days, we had to go to some fairly lengthy set building in order to accomplish the look, but today you can do it in mere moments.

adobe potoshop : motion blur

Capturing a fleeting moment on camera is one of the most satisfying aspects of photography, but this doesn't necessarily mean sharp focus and fine detail. Pin-sharp clarity suits a single drop of water hitting the still surface of a pond, but a slow exposure can turn a waterfall into a beautiful, shimmering blur.
While sharp focus can freeze motion in time, blurring can create a powerful impression of movement. Photoshop's Motion Blur filter is designed with this in mind.

fingerprint in photoshop

First, let me say that for real criminal identification, the justice industry has developed some sophisticated analysis equipment just for the purpose of fingerprinting. Standards have been set by which law enforcement gathers, records and databases these prints. So Photoshop really doesn't fit into that scenario with any degree of reliability. However for your own investigative purposes, there are some easy ways to utilize Photoshop in the projects you've mentioned above.

what is MAC OS ?

Mac OS is the trademarked name for a series of graphical user interface-based operating systems developed by Apple Inc. (formerly Apple Computer, Inc.) for their Macintosh line of computer systems. The Macintosh user experience is credited with popularizing the graphical user interface. The original form of what Apple would later name the "Mac OS" was the integral and unnamed system software first introduced in 1984 with the original Macintosh, usually referred to simply as the System software.

what is linux ?

Linux is a generic term referring to Unix-like computer operating systems based on the Linux kernel. Their development is one of the most prominent examples of free and open source software collaboration; typically all the underlying source code can be used, freely modified, and redistributed, both commercially and non-commercially, by anyone under licenses such as the GNU General Public License.

Linux can be installed on a wide variety of computer hardware, ranging from embedded devices such as mobile phones, smartphones and wristwatches to mainframes and supercomputers.[9][10] Linux is predominantly known for its use in servers; in 2007 Linux's overall share of the server market was estimated at 12.7%, while a 2008 estimate suggested that 60% of all web servers ran Linux. Most desktop computers run either Mac OS X or Microsoft Windows, with Linux having only 1–2% of the desktop market. However, desktop use of Linux has become increasingly popular in recent years, partly owing to the popular Ubuntu distribution and the emergence of netbooks and smartbooks.