Iris recognition system.How stuff works


Iris is the pigmented screen present in front of the lens of eye. The black melanin pigment in it prevents the entry of harmful rays and restricts the entry of light into the retina. The melanin in the iris consists of two distinct macro molecules called Eumelanin which is brown black in colour and Phenomelanin which is yellow-reddish in colour. The pattern in the Iris is complex and unique that can be used as an identity mark. Biometric method of identification uses the Iris recognition system to record the image of the Iris. The system uses infrared illumination to acquire images of the detailed rich intricate patterns of the iris. Digital template obtained from the iris pattern through mathematical and statistical algorithms allow the identification of an individual because iris pattern is more unique than the finger print.

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Computer borne illness


Living in the modern digital world has benefits but along with the benefits of computer and mobile technology, we are also acquiring permanent health problems. Just like Air borne and Water borne diseases, computer and mobile phone related illness is also increasing.

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Dental Curing Light


Dental curing light is used by the dentists for treating tooth cavity or filling root canal. The therapy involves the targeted action of high intensity light such as UV light to generate heat by concentrating light in the target area. To fill the cavity of tooth, adhesive chemicals such as polymer resin is used which is compressed in the cavity using the UV light. The compression makes the adhesive completely adheres to the inner surface of the tooth .With the introduction of LED curing light, comfortable dental therapy is now possible without generating heat.

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Sleep Physiology


Sleep is the physiological process by which body gets sufficient rest to rejuvenate the cells including the brain cells. It is actually a shift in brain’s activities to slow the basic bodily functions. This shift in the brain’s activity is accompanied by a major shift in the consciousness.


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Hitting 2,00000



The inspiration behind this blog was a mail from WordPress on April 3, 2010 inviting me to start a

blog in the 3 GB free space they are providing. After registering the domain, I was in dilemma about the content. After a long thought, I decided to free my electronics and biology contents sleeping well in my PC’s hard disk. The Academic Blog started growing slowly with each addition and now there are 312 articles in the front page and more than 2000 topics spreaded in 41 categories of sub pages with 1317 tags. Till now I have 169 active followers and 67 sharers.

Among my followers, a 5th standard student stands in the lowest level and an Electronics Professor in the highest level.

An Average visits per week is 4000 mostly searching the electronics content. As per Alexa rating, 94.4 % visits are coming from India and the remaining from US and UK.61 Websites linked most of my articles in their websites and most people get the articles through Google, Yahoo, Bing etc. Most of the Articles are available in the Google’s first page if the search key word matches with the tag. Blog grown well in one year and two months with 2,00000 hits. Thanks for the encouragement . Keep in touch for more updates.

Ultrasound Imaging


Ultrasound Imaging or ultrasonography is a diagnostic imaging technique using ultrasound waves. It is used to visualize subcutaneous body structures like tendons, muscles, joints, vessels and internal organs such as heart, kidney etc for possible pathology or lesions. It is possible to perform both diagnosis and therapeutic procedures. Obstetric Sonography is widely used in foetal scanning.

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