BLACK HOLE

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


Electric potential

Electric potential





Electric field

Electric field




Electricity

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"