Difference between photography & holography, Electrical Engineering

1.       In ordinary photography, each part contains information of the original object separately and in case some part of the object is destroyed then the information of that part of the object is also lost. How ever in case of a hologram, even the smallest par of the hologram contains complete information of the object and as such destruction of a part of hologram does not cause any harm so far as the information of the object is concerned.

2. In ordinary photograph, we cannot record many images of the different objects on a small photographic film simultaneously as we cannot get any information by superimposing number of photographs on a small film. However in case of a hologram, large number of images can be recorded simultaneously. For example a photograph of the size 6*9 mm can record one printed page while the same     size can record about three hundred such pages.

3. On a hologram, the pattern of images are formed using a particular sit of wavelets. In order to get the information from the hologram, same set of wavelets are to be used. In this way secret information can be recorded on a hologram as for decoding only the original wavelets have to be used and these are known to the person who recorded the information on the hologram.

4. These days holography has improved and holograms can be viewed by white light as well.

5. Recently coloured holograms have also been developed by Russian scientists using the coloured photography techniques.


Posted Date: 7/2/2012 10:09:39 PM | Location : United States

Related Discussions:- Difference between photography & holography, Assignment Help, Ask Question on Difference between photography & holography, Get Answer, Expert's Help, Difference between photography & holography Discussions

Write discussion on Difference between photography & holography
Your posts are moderated
Related Questions

advantages and disadvantages of inductive coupling

Network Reconductoring - Technical Loss Reduction The size of conductor/cable is a significant parameter as it determines the current density and the resistance of the line. A

A Platinum resistance temperature sensor has a resistance of 120 ohm at 0°C and forms one arm of a Wheatstone bridge. At this temperature the bridge is balanced with each of the ot

Q. Error speci?cations on a 10-A digital ammeter are given as 0.07% of the reading, 0.05% of full scale, 0.005% of the reading per degree Celsius, and 0.002% of full scale per degr

Q. Describe transistor stability parameters The two parameters are · The stability factor ,K · Stability measure,ß1 These parameters determine the transistor stability

up-down counter

The increase in the current is building up the magnetic field surrounding the coil. Energy is stored in that field. Consider the energy supplied by the voltage source during the

Using the LM741operational amplifier build a voltage amplifier with the voltage gain of  |A V | = 500 v/v ± = 20%. Measure all necessary parameters of the amplifier (as per deliver

Ask question #Minimum 100 words accepteddelay line in cro#