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Development in the field of Batteries...

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What is flexible batteries..... 
Now a days with advancement in technology, there has developed may gadgets which are flexible and which can take user defined shape. These gadgets cannot run on its own as it require power source. This requirement of power source has made the gadgets limited in flexibility. It has made it necessary to develop a process to make batteries flexible too. Researches are being carried out to make the primary(non-rechargeable) as well as secondary(rechargeable) batteries flexible.

Basic Design
In general, a battery is made of one or several galvanic cells, where each cell consists of cathode, anode, separator, and in many cases current collectors. In flexible batteries all these components need to be flexible.

Know about pipe threading....cont.

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The difference between NPT, BSPP and BSPT seals As I told in my previous post, Now follow a bit of information about different pipe threading and their compatible sealing.

NPT Connections
NPT (National Pipe Thread) seals are the most popular type of seal for pressure calibration systems in the U.S. and Canada. NPT male adapters have a taper thread that wedges into the female NPT adapter. They seal due to the “out of roundness principle” which means that the male stretches the female fitting until there is so much force that the connection can hold pressure. One of the challenges with this design is that if you connect stainless steel to stainless steel then over-tightening or poor lubrication can cause damage to the threads. Thread sealant is needed to seal but only 2 turns of thread sealant is required. Any more than that and the seal can leak around the thread sealant.
BSPT Connections
BSPT (British Standard Pipe Taper) is similar to NPT except for one important difference. The angle …

Pipe Threadings used in process Industries

I have seen many has problem in understanding the pipe adopters used in process industries. I too had the problem in initial stage but as time passed I get to learn about different adopters. I want to share some information about the adopters for the people like me who is facing problem in their initial stage in process industries. The main confusion in the choice of adopter is their pipe threading. If the pipe has different threading then we have to use compatible adopter for that. For example, if we have 1/2” NPT(M) pressure gauge which has to be mounted on ½”  NPT(M) pressure line, we are bound to use ½”NPT(F) to ½”NPT(F) adopter. This adopter can also be written as ½”X ½” NPT(F) adopter. We can’t use pipe Nipple or adopter having BSP threading, which normally people try to do. If you seriously wants to fit the ½” NPT(M) into ½” BSP(F) pipe, then you have to use the proper adopter like 1/2” NPT(F) X ½” BSP(M) otherwise it will damage the treading of gauge as well as the adopter. I…

The knowledge behind the incident at Delhi zoo...

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Yesterday afternoon, a gruesome incident has occurred which has led to the killing of a youth by white tiger named Vijay in Delhi zoo. According to eye witnesses, the boy has jumped to the animal's moat in the Delhi zoo. The question arises in here is why the boy has jumped to his death? Whether he was drunk or something? Even if he was drunk, he will not be able to climb the barrier and jump.

By the way, the incident has occurred and there is nothing we can do about it. But what about the authority maintaining the zoo. Is they are not aware that the incident like this may happen. They have many examples in the past. Why the authority has not taken the precaution? Why they have made the barrier which can be climbed by a normal person.

According to authority "All the enclosures of the National Zoological Park are absolutely safe. No visitor can reach the moat wall of the enclosure without the stand-off barrier. The visitor crossed the stand-off barrier and ultimately jumped i…