BHU PMT

When the life was very simple the needs of people were limited. The cost of living was not very much high. The things were available in the markets at the cheap rates, and they were in the limits of common people. The guests and visitors were welcomed in the past. As ours is a country where it was taught from the very beginning that a visitor is like a God. But as the life today has become very costly, any type of guest is not welcomed now. But some uninvited and unexpected guest drops in and make. The life of host miserable. Last year in the pooja holidays a distant uncle visited us. Throughout my life I had not seen him before; it was quite late at night when he knocked at the door of our house we all were sleeping. Firstly I tried to ignore the call but he more...

"Peter Henlein... makes from a little iron a pocket clock with a lot of wheels." Johannes Cocleus, historian The world's first portable timepiece, which came to be known as a "pocket-clocke," was made in Nuremberg, Germany, between 1504 and 1508 by the former apprentice locksmith and clockmaker Peter Henlein (c. 1479-1542). The miniaturization of timepieces began with the invention of the coiled spring in Italy in the late 1450s along with the development of various escapement mechanisms. However, the real breakthrough proved to be Henlein's invention of the balance spring, which greatly improved the precision of a watch's spring-driven interior. Henlein's new pocket watch measured only a few inches in diameter, chimed on the hour, and could run for up to forty hours before it required rewinding. It was driven by scaled-down steel wheels and hand- forged springs that, despite representing a huge technological leap forward, were nonetheless persistently inaccurate. more...

10th Physics lectures: For Secondary students science is a combined subject. But still science paper is divided into 3 and the marks allotted are also categorized into 3 subjects. If the basics of physics are clear to you from initial level itself it would not be a problem to the students as they grow. This video lectures are an effort laid down in an attempt to make students capable enough to understand the basics of physics. The videos are combined form of the theoretical topics and the practical ones. Practical videos help students to understand density, boiling point, meting point, Archimedes Principle etc. Physics covers a wide range of phenomena, from the smallest sub-atomic particles, to the largest galaxies. Included in this are the very most basic objects from which all other things are composed, and therefore physics is sometimes said to be the "fundamental science. Please mention your comments below: more...

12th class Chemistry lectures: Chemistry has a reputation for being a complicated and boring science, but for the most part, that reputation is undeserved. Fireworks and explosions are based on chemistry, so it's definitely not a boring science. If you take classes in chemistry, you'll apply math and logic, which can make studying chemistry a challenge if you are weak in those areas. However, anyone can understand the basics of how things work... and that's the study of chemistry. In a nutshell, the importance of chemistry is that it explains the world around you. Chemistry is an important subject for every student who opts for Mathematics or Science as their choice of subject. Chemistry is a subject that people deal with the whole life. Thus StudyAdda is presenting you with some videos of this subject that can help you understand this subject efficiently and thus improve your performance at academic more...

Mathematics is the abstract study of topics such as quantity (numbers), structure,space, and change. There is a range of views among mathematicians and philosophers as to the exact scope and definition of mathematics. Mathematicians seek out patterns and use them to formulate new conjectures. Mathematicians resolve the truth or falsity of conjectures by mathematical proof. When mathematical structures are good models of real phenomena, then mathematical reasoning can provide insight or predictions about nature. Through the use of abstraction and logic, mathematics developed from counting, calculation, measurement, and the systematic study of the shapes and motions of physical objects. Practical mathematics has been a human activity for as far back as written records exist. The research required to solve mathematical problems can take years or even centuries of sustained inquiry. StudyAdda have come up with the same thought that whatever videos StudyAdda has uploaded relating to the mathematics problems and their solutions will help the students to clarify their doubts. 12th video lectures have been prepared by going through the current curriculum of these exams. more...

9th Physics lectures: For Junior Secondary and Secondary students science is a combined subject. But still science paper is divided into 3 and the marks allotted are also categorized into 3 subjects. If the basics of physics are clear to you from initial level itself it would not be a problem to the students as they grow. This video lectures are an effort laid down in an attempt to make students capable enough to understand the basics of physics. The videos are combined form of the theoretical topics and the practical ones. Practical videos help students to understand density, boiling point, meting point, Archimedes Principle etc. Physics covers a wide range of phenomena, from the smallest sub-atomic particles, to the largest galaxies. Included in this are the very most basic objects from which all other things are composed, and therefore physics is sometimes said to be the "fundamental science. Please more...

9th class Mathematics lectures: Even though Mathematics undoubtedly has universal applications to life and is an essential tool in science, technology, economics, business, commerce and of course in computer design and functioning there is a general tendency for people to shy away from it for various reasons-some feel it is too difficult while others do not see its practical connection to everyday life. Consequently, we find just a small number of people who pursue this fascinating subject and the end result is that there is always only a small core of brilliant or good mathematicians which helps to reinforce the perception that this area of study is only reserved for an elitist few. But maybe this perception is bolstered by the manner in which mathematics is taught and that is, it is done in too much of an abstraction and perhaps if our teachers could help students to see how these “abstract concepts” are more...

JEE/NEET Chemistry lectures: Chemistry has a reputation for being a complicated and boring science, but for the most part, that reputation is undeserved. Fireworks and explosions are based on chemistry, so it's definitely not a boring science. If you take classes in chemistry, you'll apply math and logic, which can make studying chemistry a challenge if you are weak in those areas. However, anyone can understand the basics of how things work... and that's the study of chemistry. In a nutshell, the importance of chemistry is that it explains the world around you. Chemistry is an important subject for every student who opts for Mathematics or Science as their choice of subject. Chemistry is a subject that people deal with the whole life. Thus StudyAdda is presenting you with some videos of this subject that can help you understand this subject efficiently and thus improve your performance at academic and more...

10th class Mathematics lectures: Even though Mathematics undoubtedly has universal applications to life and is an essential tool in science, technology, economics, business, commerce and of course in computer design and functioning there is a general tendency for people to shy away from it for various reasons-some feel it is too difficult while others do not see its practical connection to everyday life. Consequently, we find just a small number of people who pursue this fascinating subject and the end result is that there is always only a small core of brilliant or good mathematicians which helps to reinforce the perception that this area of study is only reserved for an elitist few. But maybe this perception is bolstered by the manner in which mathematics is taught and that is, it is done in too much of an abstraction and perhaps if our teachers could help students to see how these “abstract concepts” are more...

JEE Physics Solutions have been geared up as per the requirement of students. Physics is another subject that students find difficult apart from Mathematics. The Physics problems here are elucidated all the way through the videos. The best way to remember things is through a visual. And hence, StudyAdda have followed the same, whatever videos StudyAdda has uploaded relating to the physics problems and their solutions will help the students to clarify their doubts. JEE Main Physics video lectures have been prepared by going through the contemporary curriculum of these exams. These videos are very helpful to all the JEE aspirants who are in 11th and 12th class. It is useful at academic level as well. StudyAdda is constantly uploading a number of video lectures on an assortment of topics in physics. The students who covet video lectures on a few topics could bring up them on our website by more...