Photoelectric effect

ndividuals win Nobel Prizes for doing something out going, discovering something, or even curing someone. Albert Einstein, won a Nobel Prize for Theoretical Physics, and especially for his discovery of the law of the photoelectric effect. Growing up he felt not smart and thought that he was going to be nothing in life, but he realized that he loved learning and that he was going to be something in life and make something of his name. He has inspiring quotes that just make you want to push…

random motion of molecules of the suspension medium as they bounced against the suspended particles.A second paper laid the foundation for the photon, or quantum, a theory of light. The paper redefined the theory of light and also explained the photoelectric effect, the emission of electrons from some solids when they are struck by light. A third paper, which had its beginnings in an essay I wrote at age 16, contained the “special theory of relativity.” I showed that time and motion are relative…

Albert Einstein was one of the most influential people in the twentieth century. One hundred years later, we’re still using his equations, theories, and discoveries today. Albert Einstein was able to take a big stand in history. Taking a stand means to take a firm position in an issue. Einstein took this stand with his theory of relativity. Albert Einstein took a stand in history when he refused to give up proving relativity which carved a pathway to modern science. Einstein had some hardships…

Photoelectric Effect- the observation that many metals emit electrons when light shines upon them Photon (quantum)- a packet of light Emission Spectrum- a series of bright lines De Broglie Relation- the wavelength of an electron is Planck’s Constant:…

Goodbye Plastic Water Bottles In the United States, Americans use 50 billion plastic bottles a year. To put that in perspective, Americans consume about 1500 plastic water bottles per second. That is way too much to be using just to use something to drink out of. The United States has some of the safest drinking water in the world, so why do we need to have bottled water that claims to be “purified” or from some springs? The answer is we don’t. In Austin, Texas we have already banned…

Photovoltaic cells produce direct current flow of electricity that is proportional to the amount of solar radiation hitting the cell. This is possible through the photoelectric effect, where light penetrates a surface and emits electrons. A standard silicon based photovoltaic cell will have a thin, negatively charged phosphorus-doped silicon wafer on top of a positively charged thicker boron-doped silicon layer. Excess electrons…

Magnetic Resonance Imaging (MRI) is a medical technology that uses magnetic fields to interact with protons in the human body, producing an image that allows doctors to diagnose disease and/or injuries (DiGiuseppe, Haberer, Salciccioli, Sanader, & Vavitsas, 2012). The idea of MRI technology had come from Raymond Damadian who was a medical professor and had founded the company that manufactured MRI scanners (Bergman PH. D, 2015). In the beginning, Damadian had been using Nuclear Magnetic…

– equation (2 gives info on location of electron in terms of probability density - wave functions are called orbitals – [pic], where E is energy, e2 is electric potential, r is orbital radius and h is Planck’s constant 1925 Wolfgang Pauli – each orbital has only 2 electrons is now explained due to direction of spin of electrons. Spinning electrons create magnetic field. Only 2 electrons of opposite spin in an orbital referred to as Pauli exclusion principle Hund’s rule – half fill…

March 14, 1879, a baby boy has been born in the small town of Ulm Germany. After frequently moving around as a child, he ended up going to college and barely passing, in Switzerland. His teachers wouldn’t recommend him for any jobs, unaware that he would become one of the greatest scientists in history. His name is Albert Einstein. As Mr. David Malter, a character from Chaim Potok’s novel The Chosen, explains to his son, Reuven, while talking about Reb Saunders “Reb Saunders is a great man,…

many years, but are they safe and lasting? Renewable energy, on the other hand, has been around for centuries. From the water wheels and mills of the Middle Ages to the photoelectric effect in solar panels of the early 1900’s, renewable energy is constantly being renovated and improved upon. Due to fossil fuels’ negative effects on the environment and lack of supply, renewable energy should be used in substitute. When fossil fuels are burned, greenhouse gases are released into the…