What is Science and Scientific investigation

What is Science: Our knowledge of the natural world and the process through which that knowledge is built

The process of science involves many layers of complexity, but the key points of that process are straightforward.There are many ways into the process
a) New Technology
b)curosity
c) Practical problem

All about Prime numbers

Prime Numbers

A prime number can be divided, without a remainder, only by itself and by 1. For example, 19 can be divided only by 19 and by 1.

Interesting facts about prime
•The only even prime number is 2. All other even numbers can be divided by 2.
•If the sum of a number’s digits is a multiple of 3, that number can be divided by 3.
•No prime number greater than 5 ends in a 5. Any number greater than 5 that ends in a 5 can be divided by 5.
•Zero and 1 are not considered prime numbers.
•Except for 0 and 1, a number is either a prime number or a composite number. A composite number is defined as any number, greater than 1, that is not prime.

trigonometry help

Trigonometry is quite a interesting subject. Some of the basic in trigonometry which need to be remember is

tan(x) = sin(x)/cos(x)

cot(x) = cos(x)/sin(x)

Reciprocal Identities:

csc(x) = 1/sin(x)

Top Engineering Colleges of India list published by Outlook 2014

Outlook has published the Top Engineering Colleges of India list as a result of its “India’s Top Professional Colleges 2014”

IIT topped the chart in the following Order. They were ranked from 1-8

IIT Bombay- IIT Kharagpur- IIT Madras- IIT Kanpur- IIT BHU- BITS Pilani – IIT Guwahati

Differential Calculus textbook for JEE Main & Advanced by Arihant

This textbook on Differential Calculus for engineering aspirants is based on the premise that problems in calculus are difficult but they are workable. The book has been divided into eight chapters covering Essential Mathematical Tools, Differentiation, Functions, Graphical Transformations, Limits, Continuity and Differentiability, dy/dx as a Rate Measurer and Tangents, Normal and Monotonicity, Maxima and Minima, each containing simple and engaging elaboration of the concepts of Differential Calculus. The contents of the book have been devised to cover the syllabi of and serve as a textbook for all engineering entrance examinations being conducted in India. The book covers the required calculus concepts and the strategies for solving the problems by breaking them down into easily manageable steps.

Superconductors: Physical link to strange electronic behavior

Scientists have new clues this week about one of the baffling electronic properties of the iron-based high-temperature superconductor barium iron nickel arsenide. A Rice University-led team of U.S., German and Chinese physicists has published the first evidence, based on sophisticated neutron measurements, of a link between magnetic properties and the material’s tendency, at sufficiently low temperatures, to become a better conductor of electricity in some directions than in others.

free practice questions for iitjee and other exams

We have added free printable assignments for iitjee and other competitive exams along with their solutions. please visit this link assignments for following chapters were uploaded Heat Transfer Thermodynamics Read more [...]