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## LAWS OF ENERGY DISTRIBUTION IN BLACK BODY RADIATION : First Part – Wein’s Laws

Image via Wikipedia

Various workers tried to explain the problem of energy distribution in black body radiation and finally the problem was successfully solved by German Physicist Max Planck. Before him, German Physicist Wilhelm Wein and British Physicist Lord Rayleigh & James Jean have tackled this problem and have given important laws. In fact, the work of there scientists paved the way for Planck to give his famous theory of radiation.

In this series of articles, I shall be discussing the various laws, special concentration on Planck’s law, concerning the black body in the brief.

# Wein’s Formula & Wein’s Laws

The problem of black body radiation was first theoretically tackled by Wein in 1893. Besides giving a general formula for the energy distribution in the blackbody radiation, he gave following important and useful laws. (more…)

## Introduction to Universe: Part IV: Black Holes

Image by NASA's Marshall Space Flight Center via Flickr

# Black Holes

#### What are they?

Strange things happen to a star at the end of its life, as it converts to a red giant, black dwarf, white dwarf, supernova etc. (To know more read Part I of this series.)

Consider a star, having its mass is more than 3 times of the mass of the Sun. At the end of its life, it will collapse and will become more and more compact. This collapse will continue until the star becomes so compact and dense that Nothing…Nothing, not even light , would be able to pass through or escape from its gravity. Hence the star will become dark and it cann’t be viewed directly.

Now we say that our Considered Star is A Black Hole.

#### Nature and More about Black Holes

As of now, our star is a black hole. Now it will emit strong gravitational waves due to its giant mass-density. These waves will be strongest near the black hole and weakest at last approach of the black hole. Thus the shape of black hole’s effect area, will look like Whirl. This is the same as washing machine whirl. .

Read Part I of this series Here

Read Part II of this Series Here.

Read Part III of this series Here.

## White Holes

Einstein proved through mathematics about the existence of black holes. It was a root changing and amazing concept as I consider. From the advances in technology, we now have been able to find several black holes, and believe one to be at the centre of our very own Milky Way galaxy. What is astonishing me, is what Einstein also proved through his equations that white holes also exist. The exact opposite of black holes, white holes are believed to “spit out” an incredible amount of matter from seemingly nothing. Such an object should be easy to find, yet none have been found so far. If one was found, it may help us explain other unknown mysteries, such as where the material that made the galaxy came from?