Learn Physics Free best concept

Education for all Physics and Telecommunication technology Free best concept

The Education Big Message of this Website must read !!!

The Education system is not good, The concept of education is not good, The education importance is not good.You will ask why? Then I will ask a question. How many Peoples get up in the morning as a intention that today I will learn something new. Can you answer the question? Well I can answer as per survey record only 6% people have intention every day to learn something new. Now important point, why such a less percentage of people? The answer is most of the people have no purpose of life and education importance.

All behind this is true meaning of education system is not good, Lets to elaborate this, The teaching style of teachers are not good and that is reason students are not participate in the class actively. Students are not getting interest in whatever they are learning.

Concept of Education

                                                 

Education Importance

                                           

   
Teachers inter in the class room and just write down the menu of syllabus, you have to study in this subject xyz  and will be cover one by one without giving any practical application and uses of any topic of the syllabus menu. Incompetent faculty in colleges, Actually colleges are now became business for more profit they hire low salary base faculty, This is education system . This is true meaning of education, This is the concept of education . Believe me that is the main reason students don’t participate in the class actively. Because they don't know the importance of education they are studying.

Well Student level of preparation and level of aspiration ground and sky gap. Today education is for degree not for knowledge .Well filled mind not well formed mind and this well filled mind will give you nothing.Incompetent faculty teaching with conversational theoretical classroom based approach. 
Students don’t know why they are studying this topic and what they are studying in this topic, What is the practical uses of that topic in life. You can ask this question but most of the student don’t know what they are studying and why they are studying.

Where they can use this knowledge in their daily life .This is main reason of confusion in study and life.  

Their goal is not clear, what to do and what they can do better.

Instead of giving the education syllabus menu, Teachers should emphasizes the practical uses and applications of the topic before teaching that topic. So that teachers can attract the attention of Students in the class room .

Due to this type of education system students are just memorizing the things or topic not understanding the things or topic fully. So Confusion continue in study and life.

To make education learning practical, application and its uses in life it will require more effort from each of us to change the present education system.

So I am doing my effort in the field of Physics and Telecommunication technology please come and join this effort to make it successful .So that when everybody get up in the morning as an intention to learn something new and that percentage will increase from 6%  then successful person percentage will increase in the world.

I don’t know what do you mean by success ? but my opinion Success is freedom, your own choice of your life. Do what love to do, it will give you success in your life.   
                                                   

 
Share Knowledge of science Physics and technology Telecommunication to Society those who want to learn concept of Physics and Telecommunication in easiest way free of cost you will never forget as simple and practical .If you hate Physics and technology there may be some reason to hate and it is as simple you have not studies the way your brain want to accept.you have learnt from wrong teacher. after a long experience here i will teach you the way you never study before and never thought Physics is as simple.it will be Physics magic, each and every topic will be covered with key concept in depth analysis based upon the facts and experience close visualization

                                                               

Study of Nature 

                                                                                                                    

                         

Understand our physical world 

This is first chapter of XI class Physic Physical world this chapter is starting of Physics so it is very important to understand first chapter because "well began is half Done". This is small topic but important from concept point of view and basic understanding pillar of Physics so lets start what is in this chapter.

Physical World meaning world of Physics ( Physics Ki Duniya )   

Very First Welcome you Physics World

Understand our physical world 

                 

How to study physics right direction 

We will see here the right method of physics study so that it will be easy for our study physics very interesting

                                                  

How to Study physics

                                                         

Know Important concept for Force

What we study maximum in Physics ?

                     

                                       

Know Important concept for Force 

                               

conservation of momentum

conservation of momentum

Conservation of momentum is very important topic of Physics because conservation of momentum concept state second law of Newton.We will see how Newton's law was derived from conservation of momentum.In our previous post we have already studies about conservation of momentum formula and its basic concept, You can refer the previous post for basic concept and definition of conservation of momentum concept for conservation of momentum. In this topic we will cover the application of conservation of momentum as well as its numerical problems.So lets start.

Conservation of momentum for a system

Linear conservation of momentum, we know that any rigid bodies system is made by collection of many small particles, Take an example of rotating wheel of a car, Another example rotating ceiling fan.

When we observe this rotating bodies, Then we found that there are many small particle, Which are rotating with different speed in different radius.

If anybody ask find the speed of the rotating wheel,Then what will be your answer, Which small particle speed you will answer this is really difficult, So to make this simple, we answer the speed of center of mass of the rigid body.

Because whole mass of the rigid body is concentrated at the centre of mass. we have already learn in previous post . So whole body is consider as a system and its internal small particle conservation of momentum gives the whole body conservation of momentum.

We will see how these two conservation of momentum is same, just wait see the below picture.

                                                                     

Conservation of momentum

In Centre of mass post we have studies that how to find the centre of mass for small point mass, So i am just using that concept.

We know that centre of mass general formula is given as rcom (centre of mass) .

rcom  = (m₁r₁+m₂r₂+m₃r₃+......................+mₙrₙ)/(m₁+m₂+m₃+................+mₙ)

Now  differentiate this equation with respect to time on both side then we will get 

d(rcom)/dt  = (m₁dr₁/dt+m₂dr₂/dt+m₃dr₃/dt+..............+mₙdrₙ/dt)/(m₁+m₂+m₃+..........+mₙ)

we know  dr/dt  = velocity = v so we can write the above equation as 

Vcom  = (m₁v₁+m₂v₂+m₃v₃+..............+mₙvₙ)/(m₁+m₂+m₃+..........+mₙ)

 Now arranging the equation we can write like this.

(m₁+m₂+m₃+..........+mₙ)Vcom  = m₁v₁+m₂v₂+m₃v₃+..............+mₙvₙ

 (m₁+m₂+m₃+..........+mₙ) = total mass of rigid body =M as shown in above picture  so we can write as 

MVcom  =  m₁v₁+m₂v₂+m₃v₃+..............+mₙvₙ now as shown in above motion picture momentum of different small particles m₁v₁, m₂v₂, m₃v₃  hence If we want to write momentum of the system can write  Psystem  = MVcom . p = mv

Whenever we want to write momentum of a rigid body then we take whole mass of the body and velocity of centre of mass product as state above.Hence now we can write 

→               →  →  →                            →

Psystem  = p₁+p₂+p₃+........................+pₙ

Hence total momentum of a body is equal to vector sum of momentum of individual particles.

                                                            

subnet mask

Subnet Mask

Today our topic is about subnet mask, This topic is important and interesting, most of the people confused in subnet mass, Because their concepts is not clear and always in doubt,  How much you know about subnet mask i don't know, But i ensure you after complete reading of this post your concept and all doubt will be clear forever in easy way. In previous post we have discussed in details about IP concepts, In subnet mask that concept will be use so i will suggest you to refer first IP concepts post after that you can well understand subnet mask. So lets start this topic.

What is Subnet mask ?

Subnet mask introduce from subnetting, Hence to understand subnet mask we have to understand subnetting.Now we will see what is subnetting ? why subnetting is required, If you can recall our IP post reference we have already discussed there are two version of IP one is IPv4 and other is IPv6. We generally use IPv4 and our discussion is also about IPv4 in this version we have limited IP. Now you can think all over the world people required unique IP to connect through internet, But we have limited IP so it is major problem in front of the technology, How to overcome of this problem introduce concept and reason of subnetting. So we can say to overcome the problem of limited IP, We required subnetting.

subnet mask explained

Subnetting is a technique to use IP addresses efficiently or preserved IP addresses with minimum wastage of IP addresses. To do this we have only three methods.

1 Use private IP, We know private IP for class A 10.0.0.0 for class B 172.16.x.x and for class C 192.0.0.0 

2 Use IPv6 where unlimited IP are available no shortage for whole globe 128 bits, remember in IPv4 only 32 bits available.

3 Use Subnetting.

Hence here we will use subnetting concept to find subnet mask, The meaning of subnetting is "network within a network" or logically division of IP addresses,To understand why subnetting is required take an example to well explain the concept of subnetting see below picture.

How to find subnet mask ?

                                                

Subnet Mask

                                                                 

ip address-public ip address range

IP Address-Public IP Address Range

Today our topic is about IP address very important and interesting because your device laptop,computer, mobile and other devices use IP address to connect with internet globally every device use unique IP address for identification to connect globally.

What is IP address ?  

It is an internet protocol address (IP address) is a numerical level like 172.16.254.1 assign to each device connected to a computer network that uses the internet protocol for communication.

IP address allow a device to communicate with other devices over an IP based network like the internet

An IP address has many parts just like an address location of your house globally suppose your house location address is written as 316 Janpath road New Delhi India then here

316  - house number

Janpath road  - Street

New Delhi  - City

India  - Country

                                                                      

IP Address Public IP Address Range