... ), and the energy of such a particle is proportional to the frequency of the light. There is a certain amount of energy (depending on the material) which is necessary to remove an electron from the surface of a material (work function). If the energy of a photon is bigger than this value, the ... electron can be emitted. In other words, if the energy of the photons is too small, an electron will not have enough energy to escape from the surface, regardless of the number of photons that strike the surface. From this explanation, the following equation results ... ...

• Word Count: 1298
• Approx Pages: 5
• Grade Level: High School

... Rutherford had just discovered the nucleus of the atom from analysis of his team's gold foil experiments. Niels made the main breakthrough by proposing that the orbital momentum of an electron in orbit around a nucleus is quantized, so that it can only jump from one allowed orbit to another, and not spiral steadily into the nucleus. The energy associated with these ... the line spectrum of the hydrogen atom. His explanation of the line spectrum of the hydrogen atom led Bohr formulate his famous principle of complementarity. This principle holds that the electron could be regarded in two...

• Word Count: 1722
• Approx Pages: 7

... each outcome is. The uncertainty principle can be described through a simple experiment where a board with two slits is placed between a light bulb and a solid screen. There is an interference between electron particles and instead of two slits against the screen are displayed, multiple slits are shown, some diffused. Through wave-mechanics this shows that the waves from the slits are not ... light), nothing else can escape this gravitational pull. This region is what is known as a black hole. Due to the uncertainty of quantum m! echanics it is, however, possible for an electron or atom...

• Word Count: 2353
• Approx Pages: 9

Marie Curie Marie Curie enormously contributed to the fields of chemistry and physics despite social barriers towards women scientists. Marie Curie was a true scientific pioneer, and one of the first scientists to investigate ... of atomic physics for study and because of her research and achievements she was awarded two Nobel prizes. She received one in physics in 1903 and one in chemistry in 1911. Today only three people, including Marie Curie, have achieved this distinction. She was born in Warsaw, Poland, and her father was a physics ... her husband. The fund enabled her to develop a gro...

• Word Count: 1618
• Approx Pages: 6
• Has Bibliography

... one of the most shocking blows of uncertainty in the world of physics came from Werner Heisenberg. His "principle of uncertainty," stated that because the speed and position of an electron are impossible to know at the same time, it is therefore impossible to be able to predict its behavior. Given all of these scientific breakthroughs, it seemed that no one ... ...

• Word Count: 1360
• Approx Pages: 5
• Grade Level: Undergraduate

... , p.127) Stephen Hawking wanted to study mathematics and physics in a university, but his father believed that there would not be any jobs in mathematics and thus Hawking took physics and chemistry, and only a bit of math. Another reason he didn't do mathematics is because when he attended University College, Oxford in 1959 they didn't do mathematics. Hawking's peers didn't really realize ... ...

• Word Count: 1623
• Approx Pages: 6
• Has Bibliography
• Grade Level: High School

... he began to love the sciences, but his father insisted that he study for a degree in mathematics (Donaldson 1-3). When he enrolled in Oxford University he intended on getting a degree in chemistry, but this was not an available field so he studied natural science instead. After three years Hawking received a first class honours degree. Despite graduating with exceptional marks he didn't like ... ...

• Word Count: 2270
• Approx Pages: 9
• Grade Level: High School

... the truth of unity through following different approaches. Swami Vivekananda in his lecture on Religion and Science had stated: "Religion deals with the truth of the metaphysical world just as chemistry and other natural Sciences deal with the truth of the physical world". Jitatmananda points out that Swami Vivekananda had prophezied that "India's Vedanta would stand out as an answer to ... ...

• Word Count: 1813
• Approx Pages: 7
• Grade Level: Undergraduate