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Anthony Joshua shares first tweet after his defeat to Andy Ruiz Jr.

     Over the weekend, Anthony Joshua lost his world heavyweight belts WBA, IBF, and IBO to Andy Ruiz jr after a 7th-round stoppage added an abrupt stop to his professional record at Madison rectangular lawn. Anthony Joshua was floored 4 times before the shocking combat became ultimately ended. And in his first twitter submit inside the wake of the defeat, Anthony Joshua shared a brand new picture of himself displaying off his buff arm and wrote:

 'Don’t let success get to your head or failure get to your heart.'

-AdminT

Re: Radioactivity.

Nice. Short and simple

Nuclear fission.

What is Nuclear fission?



In nuclear physics and nuclear chemistry, nuclear fission is a nuclear reaction or a radioactive decay process in which the nucleus of an atom splits into smaller, lighter nuclei. The fission process often produces free neutrons and gamma photons, and releases a very large amount of energy even by the energetic standards of radioactive decay.

Nuclear fission of heavy elements was discovered on December 17, 1938 by German Otto Hahn and his assistant Fritz Strassmann, and explained theoretically in January 1939 by Lise Meitner and her nephew Otto Robert Frisch. Frisch named the process by analogy with biological fission of living cells. For heavy nuclides, it is an exothermic reaction which can release large amounts of energy both as electromagnetic radiation and as kinetic energy of the fragments (heating the bulk material where fission takes place). In order for fission to produce energy, the total binding energy of the resulting elements must be more negative (greater binding energy) than that of the starting element.



So tommorow we talk more about nuclear fusion.

Radioactivity.

The phenomenon was first discovered in 1896 by a French physicist:Henry Becqurel.

He noted while performing experiement that uranium gave out some kind of rays that would penetrate through thick black paper and affect a photographic plate placed on the other side.

This observation was later confirmed by Mary Curie and her husband Pierre Currie in 1898.

They discovered that that ‘pitchblende’,an Ore of uranium was a more Intense source of radioactivity than uranium.
Then later isolated the first concentrated radioactive substance:polonium and Radium.

Radioactivity is the spontaneous (natural) decay of nucleus of the atom of an element during which it emits α_orβ-(particles) or Y-ray or a combination of any of all the three plus energy(heat).

Natural Radioactivity _is the spontaneous disintegration(decay) of the nucleus of an atom during which α-particles or β-particles or gamma rays or a combination of any of all the three plus heat (energy) are released.

In Artificial Radioactivity-, an ordinary material is made radioactive by bombarding it with radioactive by ‘bombarding’ it with radioactive particles.

Tommorow we will talk about nuclear fission (which will lead to how bombs are made) and Nuclear fusion (Which is connected to the sun we all know).