Albert Einstein (1879 – 1955) was a German-born theoretical physicist widely considered one of the greatest physicists of all time. While best known for the theory of relativity (and specifically mass-energy equivalence, E=mc2), he was awarded the 1921 Nobel Prize in Physics for his 1905 explanation of the photoelectric effect and "for his services to Theoretical Physics". He was known for many scientific investigations, among which were: his special theory of relativity which stemmed from an attempt to reconcile the laws of mechanics with the laws of the electromagnetic field, his general theory of relativity which extended the principle of relativity to include gravitation, relativistic cosmology, capillary action, critical opalescence, classical problems of statistical mechanics and problems in which they were merged with quantum theory, leading to an explanation of the Brownian movement of molecules; atomic transition probabilities, the probabilistic interpretation of quantum theory, the quantum theory of a monatomic gas, the thermal properties of light with a low radiation density which laid the foundation of the photon theory of light, the theory of radiation, including stimulated emission; the construction of a unified field theory, and the geometrization of physics.
Alexander Graham Bell (1847 – 1922) was a Scottish scientist and inventor who emigrated to Canada and later the United States. Today, Bell is widely considered as one of the foremost developers of the telephone, together with Antonio Meucci – inventor of the first telephone prototype – and Philipp Reis. In addition to Bell's work in telecommunications technology, he was responsible for important advances in aviation and hydrofoil technology. Much of his later work was done in Canada.
Galileo Galilei (1564 – 1642) was an Italian physicist, astronomer, and philosopher who is closely associated with the scientific revolution. His achievements include improvements to the telescope, a variety of astronomical observations, and effective support for Copernicanism. According to Stephen Hawking, Galileo probably contributed more to the creation of the modern natural sciences than anybody else. He is often referred to as the "father of modern astronomy," as the "father of modern physics", and as the "father of science". The work of Galileo is considered to be a significant break from that of Aristotle. The motion of uniformly accelerated objects, treated in nearly all high school and introductory college physics courses, was studied by Galileo as the subject of kinematics.
Thomas Alva Edison (1847 – 1931) was an American inventor and businessman who developed many devices which greatly influenced life worldwide into the 21st century. Dubbed "The Wizard of Menlo Park" by a newspaper reporter, he was one of the first inventors to apply the principles of mass production to the process of invention, and can therefore be credited with the creation of the first industrial research laboratory. Some of the inventions attributed to him were not completely original but amounted to improvements of earlier inventions or were actually created by numerous employees working under his direction. Nevertheless, Edison is considered one of the most prolific inventors in history, holding 1,097 U.S. patents in his name, as well as many patents in the United Kingdom, France, and Germany.
PARIS: Einstein's celebrated formula e=mc2 has been corroborated (again), thanks to a heroic computational effort by French, German and Hungarian physicists.
A brainpower consortium led by Laurent Lellouch of France's Centre for Theoretical Physics, using some of the world's mightiest supercomputers, have set down the calculations for estimating the mass of protons and neutrons, the particles at the nucleus of atoms.
Energy and mass are equivalent
According to the conventional model of particle physics, protons and neutrons comprise smaller particles known as quarks, which in turn are bound by gluons.
The odd thing is this: the mass of gluons is zero and the mass of quarks is only five percent. Where, therefore, is the missing 95 per cent?
The answer, according to the study published in the U.S. journal Science today, comes from the energy from the movements and interactions of quarks and gluons.
In other words, energy and mass are equivalent, as Einstein proposed in his Special Theory of Relativity in 1905. The e=mc2 formula shows that mass can be converted into energy, and energy can be converted into mass.
Alexander Graham Bell (1847 – 1922) was a Scottish scientist and inventor who emigrated to Canada and later the United States. Today, Bell is widely considered as one of the foremost developers of the telephone, together with Antonio Meucci – inventor of the first telephone prototype – and Philipp Reis. In addition to Bell's work in telecommunications technology, he was responsible for important advances in aviation and hydrofoil technology. Much of his later work was done in Canada.
Galileo Galilei (1564 – 1642) was an Italian physicist, astronomer, and philosopher who is closely associated with the scientific revolution. His achievements include improvements to the telescope, a variety of astronomical observations, and effective support for Copernicanism. According to Stephen Hawking, Galileo probably contributed more to the creation of the modern natural sciences than anybody else. He is often referred to as the "father of modern astronomy," as the "father of modern physics", and as the "father of science". The work of Galileo is considered to be a significant break from that of Aristotle. The motion of uniformly accelerated objects, treated in nearly all high school and introductory college physics courses, was studied by Galileo as the subject of kinematics.
Thomas Alva Edison (1847 – 1931) was an American inventor and businessman who developed many devices which greatly influenced life worldwide into the 21st century. Dubbed "The Wizard of Menlo Park" by a newspaper reporter, he was one of the first inventors to apply the principles of mass production to the process of invention, and can therefore be credited with the creation of the first industrial research laboratory. Some of the inventions attributed to him were not completely original but amounted to improvements of earlier inventions or were actually created by numerous employees working under his direction. Nevertheless, Edison is considered one of the most prolific inventors in history, holding 1,097 U.S. patents in his name, as well as many patents in the United Kingdom, France, and Germany.
PARIS: Einstein's celebrated formula e=mc2 has been corroborated (again), thanks to a heroic computational effort by French, German and Hungarian physicists.
A brainpower consortium led by Laurent Lellouch of France's Centre for Theoretical Physics, using some of the world's mightiest supercomputers, have set down the calculations for estimating the mass of protons and neutrons, the particles at the nucleus of atoms.
Energy and mass are equivalent
According to the conventional model of particle physics, protons and neutrons comprise smaller particles known as quarks, which in turn are bound by gluons.
The odd thing is this: the mass of gluons is zero and the mass of quarks is only five percent. Where, therefore, is the missing 95 per cent?
The answer, according to the study published in the U.S. journal Science today, comes from the energy from the movements and interactions of quarks and gluons.
In other words, energy and mass are equivalent, as Einstein proposed in his Special Theory of Relativity in 1905. The e=mc2 formula shows that mass can be converted into energy, and energy can be converted into mass.
This means that there is a natural tendency of objects to keep on doing what they're doing. All objects resist changes in their state of motion. In the absence of an unbalanced force, an object in motion will maintain this state of motion. 
Everyone unconsiously knows the Second Law. Everyone knows that heavier objects require more force to move the same distance as lighter objects. 
This means that for every force there is a reaction force that is equal in size, but opposite in direction. That is to say that whenever an object pushes another object it gets pushed back in the opposite direction equally hard. 
