Meta Monday

  METALLOGRAPHY OF COINS IN INDIA   1.         INTRODUCTION Welcome Readers, here we are with another interesting blog for you in Meta Monday. India has been one of the earliest issuers of coins in the world (circa 6 th  Century BC). India has unique and diverse coinage techniques be it minting techniques, motifs, sizes, shapes, the metals used. Currently, there are Re.1, Rs. 2, Rs.5 and Rs.10 coins in use. While using them you must have wondered about how and what coins are made of, their metallography and design. Here are the answers to all these questions. Let’s go through them. 2.         COIN MAKING PROCEDURE: Pic Credit: Britannica Encyclopedia The above image shows the general procedure of making coins in India. ·           Re.1 Coin: In independent India, one rupee coins was first minted in 1950 and is currently in circulation.The one rupee coin is the smallest coin currently in use. One Indian rupee coins are minted from stainless steel since 1992. It is made out of ferritic s

Atom Probe Tomography: An CT scan of ATOM Atom leap is useful in tomography this is something that would leap forward or boost the scientific research in material science area where people can see very small-scale atoms in 3D. Yes !! we are not talking about structure in 3D indeed we are talking about the atom in 3D .                                                                           Credits :https://nfapt.iitm.ac.in/apt.html Motivation : We have a sample where we have clusters inside the material which are of the order of 1NM or 2NM inside that you have atoms if we want to see which atoms are there in the cluster , let us say you have a material and there are some grain boundaries where the elements is getting segregated these region are extremely in small volume and you want to see which element is getting segregated or let say you have CNT and you are embedding some metal to CNT and Diameter of the tube itself is of some Nanometer and you want to see what is getting embed or