The Physics School

Welcome to the Physics School
Welcome to the Physics School

Thank you for visiting the Physics school. Here you will be able to find out about the lives and times of many famous physicists and details on the scientific principles that they are renowned for.

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The Physics school is split into two main sections.

 

 

The first one - Biographies - takes a look at the lives of scientists such as Tesla, Newton, Hawking and Currie.

 

 

The second section gives details and explanations of some of their major findings and discoveries, such as radiation, theories on gravity and cosmology, and quantu mechanics.

 

 

We hope that you enjoy your visit to the Physics School, and that you find the articles enjoyable.

 


 
Marie Curie Biography
Marie Curie Biography
Marie Curie was a French physicist and chemist who is known today for being associated with the origin of radioactivity and the discovery of radium and polonium. She is a legendary scientist for being the first woman to have won the Nobel Prize in Physics and the first scientist to have won two Nobel Prizes.
Maria Sk?odowska, who is known today as Marie Curie, was born on November 7, 1867 in Warsaw, Poland.  She was Polish-raised and she was the fifth and youngest child. Her parents were both educators. Her father, W?adys?aw Sk?odowski, was a mathematics and physics professor. Her mother, Bronis?awa Boguska, died of tuberculosis when Maria was still twelve.
Marie Curie was an intelligent student. In 1883, she finished her secondary education earning a gold medal. She first learned physics from her father. She wanted to learn more but women in Poland were not allowed to enter universities during her time. She wanted to study at the Sarbonne which is the University of Paris but she did not have the means to do so. She earned a living to help sustain her family by being a tutor and being a governess in well-off families. In 1891, she moved to Paris in lieu to an arrangement with her sister who had just finished a degree in medicine there and she entered as a physics student at the Sarbonne where she studied physics, chemistry, and mathematics. She devoted herself to her studies. In 1893, she finished first place with her degree in physics. In 1894, she finished second place with her degree in mathematics.
In 1894, Marie Curie was working on her research project that involved the magnetic properties of metal mixtures when she met Pierre Curie who was associated with the school of Physics and Chemistry. In 1895, she was married to Pierre Curie and the two of them continued studying radioactivity together. Marie Curie was the one who invented the word radioactivity to describe the phenomenon in which elements give off radiation. In July 1898, Pierre and Marie Curie announced their discovery of a radioactive element which they named polonium after Marie’s country Poland. In December 1898, they announced their discovery of another radioactive element which they named radium.
Marie Curie got her doctorate degree in science in 1903 and she, along with her husband Pierre Curie and with Antoine Henry Becquerel, won the Nobel Prize in Physics in the same year for their work on radioactivity.
In 1906, Pierre Curie died and Marie Curie replaced her husband’s professorship at the Sarbonne. In 1908, she became a full professor at the Sarbonne and she was the first woman to have been given this position at the Sarbonne.
Marie Curie became the director of the Institute of Radioactivity which is in Warsaw, Poland in 1911 and she won the Nobel Prize in chemistry in the same year for her work on isolating pure radium. In 1914, she became the first director of the Radium Institute in Paris.
Marie Curie had two daughters with Pierre. She died of anemia on July 4, 1934 and her health condition was due to too much exposure to high levels of radiation. The negative health effects of radioactivity were not recognized and known while she was still doing her study on radioactivity. Marie Curie’s great work and discoveries in the field of radioactivity makes her one of the most important scientists in physics.

Marie Curie Biography


Marie Curie was a French physicist and chemist who is known today for being associated with the origin of radioactivity and the discovery of radium and polonium. She is a legendary scientist for being the first woman to have won the Nobel Prize in Physics and the first scientist to have won two Nobel Prizes.
 
Kepler’s Laws of Planetary Motion
Kepler’s Laws
Johannes Kepler stated the three laws of planetary motion. These laws are what are known today as Kepler’s laws and they describe the motion of the planets. He discovered these laws through the help of Tycho Brahe’s studies collections because he was in charge of them when Brahe died.
The first law states that “Every planet has an elliptical orbit with the Sun at one focus.” Having an elliptical orbit means that the sum of the distances of each orbital point to a point called the focus is constant. The first law states that the Sun is a focus of the orbit of every planet in the solar system. The claims of the Ptolemaic and Copernican systems stated that the orbits of the planets follow a circular path or a superposition of circular paths. Johannes Kepler discovered the elliptic path of the orbits of the planets after studying Tycho Brahe’s observations and study collections and he proved this through his calculations. The elliptical orbit of the planets is an effect of the force of gravity. Most of the planets follow an elliptical orbit with low eccentricity. Other heavenly bodies such as asteroids also follow an elliptical orbit, with high eccentricity, with the Sun at one of its foci. The eccentricity of an ellipse describes its shape, that is, an ellipse with low eccentricity has a geometric shape that is close to a circle and an ellipse with high eccentricity has a geometric shape that is close to an oval or a stretched circle.
The second law states that “For equal intervals of time, the line that joins the planet to the Sun sweeps out equal areas.” Consider that when the planet earth is following its elliptical orbit for one day or 24 hours, an area is covered by the earth’s path in its orbit and it is described by the line that joins the earth to the sun. The second law states that for a 24-hour time interval, this area is always the same wherever the earth on the point of its orbit is. Since the Sun is at one focus of the elliptical orbit of every planet, the planets move faster when they are closer to the sun because the areas that they sweep are the same when they are farther from the sun.
The third law states that “The square of the period of a planet’s orbit is directly proportional to the cube of the semi-major axis of the planet’s orbit.” This law is described by the equation P2=ka3 where P is the planet’s orbital period, k is the proportionality constant and a is the planet orbit’s semi-major axis. The proportionality constant is the same for all planets. This law implies that the time it takes the planet to orbit around the sun or what is known as its orbital period increases as its distance from the sun, which is directly related to its orbital path’s semi-major axis, also increases. Mercury, which is the nearest planet to the sun, takes the shortest time to orbit around the sun and Pluto, which is the farthest plant from the sun takes the longest time to orbit around the sun. The third law was what other scientists and astronomers used to calculate for orbital periods of satellites and other heavenly bodies.
Kepler’s Laws of Planetary Motion have been very useful for other scientists and astronomers to understand the orbital paths of the planets, satellites, and moons.

Kepler’s Laws of Planetary Motion

 

Johannes Kepler stated the three laws of planetary motion. These laws are what are known today as Kepler’s laws and they describe the motion of the planets. He discovered these laws through the help of Tycho Brahe’s studies collections because he was in charge of them when Brahe died. 
 
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