Weight of a body
THE THEORY OF ELECTRON
As we know that there are two type of charge
1. Positive charge
2. Negative charge
The particle which has negative charge they know as Electron
and the particle which has positive charge they know as Proton
As we know that molecules are made up by atom as our research forwarding we found that small particle of molecules which knows as atom also made up by many smallest particle and they small particle is Electron which are negatively charged particle and other is nucleus which is positively charged.
Nucleus of a atom also contain two particle Proton which has positive charge and Neutron which is neutral mean they do not have any charge.
The net charge on a atom is zero because a atom possessive equal number of electron and proton.That mean if a atom has three numbers of electron then it must have three number of proton then we can say that its neutral because in that particular situation it has net charge zero.
3e+3P=0
Now what is the negative charged material?
Whenever a electron is entered in a atom then negative charge increased and atom acquired a negative charge and the net charge on atom is negative so we can say that electron is responsible for the creation of negative charged material.
suppose a atom has got four electron and four proton then the net charge on electron is zero.
-4e+4P=0
When a electron enter in the orbit of atom then the number of electron is increased now it has five electron and four proton so what would be the net charge on atom
-5e+4P= -e
That mean now it has got negative charge
What is the positively charged material ?
Whenever a electron goes out from the orbit of a atom then the number of negative charged particle is decreased and net charged become positive.
Suppose a atom has 6 electron and 6 proton then it has net charge zero.
-6e+6p=0 (Because the charge on a electron and on a proton is equal but opposite)
Whenever a electron goes out from the orbit of atom then what would be net charge on atom
-5e+6p= 1p so now it has got positive charged
NOTE So electron is the responsible for the creation of positively charged material as well as negatively charged particle.
If a atom has got a charged then we can say that it is electrified.
That mean electron is also responsible for electrification.
Now the question rise "why always electron goes out from a atom and enter in the atom why does not proton do that ?"
So we can discuss it point to point
1 - A proton is 1837 times heavier in the comparison of electron so due to its heavy weight proton can not move easily like electron
2. Basically protons is tightly bound which neutron they do not move but electron is free to move in its orbit so whenever a small amount of energy come to a atom the electron immediately energize and they leave their orbit.
So that"s the theory of electron
ARTICLE WRITTEN BY PANKAJ CHAUHAN
BLACK HOLE
The first picture of Black Hole recently has been taken by Horizon telescope.This black Hole has been found in galaxy M87.
In that picture a black dark spot can be seen in the centre of black hole and around the black hole centre a extremely intensity light can be seen.When we talk about the black hole and now we has its actual picture then we can recall Albert Einstein theory of relativity that theory has been given many year ago. Now we have two question here. Does that theory verify that black hole picture or that picture verify that theory. So as i think when theory of relativity had been published we did not have any picture of black hole that theory was given on the basics of Albert Einstein own calculation and speculation so we can say that this theory verify the picture of Black hole.
Does gravity effect the way of light? that was the question which never could explain by Newton theory of gravitation.
But Einstein said we have to understand much about gravity and he did it he explained many other phenomenon about gravity which completely changed the definition of gravity.
Einsteins said gravity can change the path of light and he conducted a experiment about that. Einsteins observed the location of few star behind the sun when these star had been seen by telescope then he found they did not see at their actual location cause Sun. Sun is the giant of mass in our solar system its gravitation force is much and much than other bodies exist in our solar system due to its giant mass.When light pass through the sun its bend toward to sun due to its gravitation force that's why the star cant be seen at their actual location because we know well what is the procedure to see the things first light ray strike the object then return back and incident to our retina but light distract its actual path due to gravity of sun.
When we talk about the Black Hole then first we understand the the gravitation force of a black hole could be more and more greater than to the sun black hole mass is not constant like sun. The mass of black hole is always increase because it eat always small star and other space garbage even two black hole merge and develop a black hole which has massive mass.
When light pass through the black hole it could not escape from the gravitation force of black hole and start moving around the centre of black hole which can be seen in the picture of black hole taken by Horizon telescope from M87 galaxy.
Now we can say that that picture verify the statement of Einsteins "There is nothing in space which can be escape from Gravity even light"
Article written by Pankaj chauhan
Electricity
What is charge ?
Electric Charge is the special characteristic of a particle due to which it experience a force(Force of attraction and force of repulsion) whenever it is brought to near or in a electric field.
There are two type of electric charge
(1) Positive charge - Positive charge is nothing but a region where absence of free electron.
Free electron -- Free electron are the particle which carry a fix amount charge in a electric field or a electric conductor.
Electric current
Electric current is the nothing but the flow of free electron cross the electric conductor
Each electron has got a fix amount of charge.
"Electric current is the amount of charge flow in unit time across a electric conductor"
