From Wikipedia, the free encyclopedia. Permanent Account Number (PAN) is a code that acts as identification of Indians, especially those who pay Income Tax. It is a unique, 10-character alpha-numeric identifier, issued to all judicial entities identifiable under the Indian Income Tax Act 1961. IT PAN card is issued under Section 139A of the Income Tax Act. 2  The PAN structure is as follows: AAAPL1234C: First five characters are letters, next four numerals, last character letter. 3  The first three letters are sequence of alphabets from AAA to ZZZ. 4  The fourth character informs about the type of holder of the card.
The scientific method is a body of techniques for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge. To be termed scientific, a method of inquiry is commonly based on empirical or measurable evidence subject to specific principles of reasoning.
The scientific method applies a number of skills used by scientists to learn about the world. The scientific method is basically the way that scientists study the world. The idea is that when you perform an experiment, you should do it in a systematic way that collects good data that can be reproduced. Depending on who you talk to, there may be several steps to the scientific method regarding how to perform an experiment: