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Scanning Electron Microscope(SEM)

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                                                SEM Scanning Electron Microscope(SEM) Scanning electron microscope is a one of the particle analytical method. SEM is one of the type of electron microscope. Here we using the single electron ray which is kinetically ejected from the electron gun. The ejected single electron powerfully hits the specimen which is known as sample and placed in the holder, the secondary electron rays is produced by the sample and secondary electrons are commonly detected by an  Everhart-Thornley detector . the secondary electrons are contains the different kinds of properties and the detector has counted the number of rays are scattered by the sample. the detected signal intensity is depends on the specimen topography. Schematic representation of SEM: SEM can achieve 1 nm Principal of SEM Accelerated electrons i...

Portfolio

Saving (Art of life)             Its been an enormous part of our life. In my whole life i am tried to do that. Basically all are try to do savings in the path of peaceful and violent, i tried in the both of them but i can't do it, because till that i don't know the basic knowledge of the savings. I came from the rural place no one not teach me about the savings including the schools, college and anything else. I learn from poverty until i don't know the logic reality, i.e " Art of saving is the Origin of poverty " Now a days majority of people are going through the raise their portfolio, while talking about the portfolio i remember the major of  Savings and Investing, let we discuss about the fundamental difference between the assets and investing are Savings Its only valid for   short term  Assets of the savings are the cash, T-bills, Bank account and the non move able property In the savings we got 0-2% of returns only...