Quantum chromodynamics

Born: APRIL 15, 1707 Parents: Paulus Euler and Margaretha Brucker EARLY LIFE Father came from modest folk, mostly artisians, while mother’s ancestors include a number of well known scholars. Leonhard received his first lessons in mathematics at home from his father. Around the age of eight he was sent to the Latin school in Basel and given a place to stay at his maternal grandmother’s house. To compensate for the poor quality then prevailing at the school, his father hired a private tutor for his

The first accurate recording using an electrocardiogram (ECG) occurred in 1895. Willem Einthoven was the first person to create an ECG that accurately depicted the recording of the heart’s electrical currents (Jenkins, 2011). Einthoven “was awarded the Nobel prize in Physiology or Medicine”(Nobelprize, 2014, p. 1) in 1924 for the discovery of the electrocardiogram (Nobelprize 2014). Not only did he configure the machine but he also created the deflections. They are the labels of the points on the

1. Why does the final electron energy not depend on the focusing cylinder voltage? - The final electron energy does not depend on the focusing cylinder voltage because it applies a force that is parallel to the magnetic field rather than perpendicular to it. 2. Do you think the electrons are emitted from the cathode with zero velocity, one velocity, or a range of velocities? Hint: The electrons inside the metal that are able to escape are a bit like a gas of molecules at finite temperature. - I

Let’s look at one other wave property of light. Light travels in transverse waves and this property is demonstrated by a phenomenon called polarization. Polarization means that the waves of light are restricted in their direction of vibration. Think of a horizontal string that you shake from one end. If you shake the string up and down, you will get up and down, or vertical, waves. If you shake the string back and forth, you will get horizontal waves. In this way, the string is said to be polarized

Albert Einstein Have you ever heard the bowling ball and trampoline analogy, if you roll a bowling ball onto a trampoline it will roll into the middle. Then if you were to roll some billiard balls behind it they would curve in towards the bowling ball. Albert Einstein is important because of all the changes he has made to the world of science and the military, with the Theory of Relativity, the E=Mc2, and the atomic bomb. In 1915 Einstein had first proposed the Theory of Relativity, in 1905 is when

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His work led to important advances such as the control of atomic energy, space exploration, and applications of light. As a young boy born to Jewish parents in Germany, his teachers initially called him slow and lazy. However, by the time he left school at the age of 15, one teacher remarked there was nothing left to teach him. Einstein studied at the Institute of Technology in Zurich and received his doctorate in 1905 at the age of 26. That same year, he published five groundbreaking scientific

Bromine is one of the lesser known elements on the periodic table and is often underappreciated for what it does and has done for us. Starting from the scientific discoveries to the economical benefits, it’s help in improving the world is undeniable. The element was added to the periodic table in 1826 after being discovered by Antoine-Jérôme Balard in Montpellier, France. However, he was not the first to discover it. Carl Löwig from Heidelberg, Germany, discovered it a year earlier. When Löwig

Positronium can be envisioned as an electron-positron pair rotating around their centre of mass, with the counter balance of centrifugal and electrostatic forces. In this situation, the positron and electron lose their identity and the pair is a very light, neutral free radical (3). Positronium has a similar structure like that of a hydrogen atom, except that the proton nucleus is replaced by a positron and it is lighter than hydrogen. It is hydrogen-like, but the reduced mass is mo/2, where mo is

Hertzsprung was born in Frederiksberg, near Copenhagen, on October 8, 1873 and died in Roskilde, Denmark, on October 21, 1967, at the age of  94. His father had a master's degree in astronomy from the University of Copenhagen, but for financial reasons he gave up astronomy to accept a position in the Department of Finances. His father's interest in astronomy and mathematics inspired his interest in the same fields. However, for the same financial reasons, his father did not want his son to pursue