Photon Essays

  • The Importance Of Photoelectric Interactions

    919 Words  | 4 Pages

    the other interactions. This is due to the photons being almost completely absorbed by the patient as the photons pass through the body to hit the image receptor. There are a lot of photon interactions throughout the radiologic field. The interactions between photons play a major role in how we create images. The photons are produced when matter and excited electrons interact with each other at the same

  • Spectroscopy Lab Report

    846 Words  | 4 Pages

    units. Relationship between supply voltage of LEDs and emitted wavelength The minimum voltage Vmin which required to cause photon emission, and we measure the wavelength of the emitted photons and use it to calculate the photon energy hf, we always find that eVmin < hf. Some of the photon energy is supplied by thermal energy. In order to predict the wavelength of the photons emitted by a LED, we must take into account the distribution of charge carriers in the semiconductor material Color temperature

  • Light Theory Of Light Essay

    810 Words  | 4 Pages

    light It was first hypothesised by Isaac Newton that light consisted of a lot of small particles which were emitted in all directions from a source, such as metal. Albert Einstein believed that light was composed of tiny particles called photons, and each photon has energy, after studying the photoelectric

  • Helium Laser Lab Report

    2073 Words  | 9 Pages

    4. Basic operation of the Helium-Neon Laser. 4.1. How to Make Helium-Neon Laser. The goal of this experiment is to know how to make a simple Helium & Neon LASER So we will need to three principal elements to make a laser :- (1) Energy pump. (2) Optical gain medium. (3) Optical resonator. Now we must know the role of every element in this experiment Energy pump: A 1400-V DC power supply maintains a glow discharge or plasma in a glass tube containing an optimal mixture (typically 5:1 to 7:1)

  • Zeeman Effect Theory

    1847 Words  | 8 Pages

    to the distribution of speed of the atoms in the substance, then by slowing down the atoms the substance can be cooled. The atoms are slowed down my photons using the conservation of momentum. The photons are at lower energies than needed by the atoms for energy transitions. When the photon and atom are moving towards each other the energy of the photon looks more like the one needed for transitioning because of the doppler effect. The slowing down happens after many absorb and release actions by the

  • The Flame Test

    595 Words  | 3 Pages

    There are a myriad of ways of identifying an element. One of these methods is the study of colors emitted by the element when exposed to an energy source. Flame tests are a fast and reliable method of determining the identity of unknown metal ions. The Flame Test was designed to test different metal ions to observe the colors that each chemical makes. The Flame Test was also used to identify unknown metallic ions based on the color of the flames produced. In this lab, Petri dishes each containing

  • Albert Einstein: The Emergence Of Quantum Mechanics

    1068 Words  | 5 Pages

    Every moment, our lives, our world and even our universe are governed by laws of physics-the explanations to all natural phenomena. One of the most brilliant physicists in the history of mankind, Albert Einstein, made great contributions to the development of theory of relativity and quantum physics. Despite of his profound excellence, Einstein was proven wrong of so-called “quantum entanglement”. He strongly denied its possibility as he once described it as “spooky action at a distance .” Even in

  • General Relativity Vs Quantum Mechanics

    1702 Words  | 7 Pages

    A physicist’s job is to use humanity’s understanding of how matter and energy interact to learn about the Universe. The job of physics, however, is to unite the four fundamental forces of nature: Gravity, Strong and Weak Nuclear, and electromagnetism, into a single physical model; A theory of everything. In the 20th century, physicists revolutionized humanity’s understanding of these forces and made great strides in uniting them, but the two theories which have brought humanity the closest to this

  • Entanglement In Albert Einstein's Quantum Theory

    1259 Words  | 6 Pages

    As postulated by Max Planck (1858–1947), the quantum theory “was the most fundamental innovation in physical science in the first half of the twentieth century, because of the establishment of a new system of physics and the construction of a philosophical worldview that appeared to deny the possibility of a complete understanding of reality” (“Quantum mechanics”,2005). In fact, the quantum theory is a probabilistic act; the act of finding a small particle in the whole universe. In other words, the

  • Albert Einstein's Theory Of Relativity

    953 Words  | 4 Pages

    the wavelength of EM radiation will become longer as it rises of a gravity well. Photons must expend energy to escape, but at this instants Photon must always travel at the speed of light 3x10^8 m/s, so this energy must be lost through a change of frequency rather than a change in speed. If the energy of the photon decreases, the frequency also decreases hence there occurs an increase in the wavelength of the photon, or a shift to the red end of the EM spectrum. That’s why this got the name: gravitational

  • Spectrophotometric Analysis Of Dyes

    904 Words  | 4 Pages

    Introduction: The objective of this experiment was to use a spectrophotometer to calculate the absorbance wavelength for the commercial dyes that were given. Light is composed of tiny particles that are called photons, just like matter is composed of tiny particles called atoms. Using the spectrophotometer you can see that different dyes absorb at different wavelengths. With all of the experimentation done the concentration, absorbance and the max wavelengths should be found. Figure 1: Schematic

  • Fluorescent Lamp Research Paper

    1154 Words  | 5 Pages

    Introduction Fluorescents are a large family of light sources. There are three main types of fluorescent lamps: cold cathode, hot cathode, and electroluminescent. They all use phosphors excited by electrons to create light. A fluorescent lamp or a fluorescent tube is a low pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor which produces short-wave ultraviolet light that then causes a phosphor coating on

  • Karl Heisenberg Theory Of Momentum

    1657 Words  | 7 Pages

    Werner Karl Heisenberg, known for his uncertainty principle, was a German theoretical physicist, and one of the most important figures of quantum mechanics. He was born in Würzburg, Germany, in 1901, and his father was a secondary school teacher of classical languages. Both his father and grandfather had received high academic achievement, and so his elders were determined that Werner too would foster good academic success to eventually maintain a good social status, which he did. But to make sure

  • Graph Observation

    826 Words  | 4 Pages

    presented in Graph II. Once the distance is calculated from light intensity (Data Table II). This implying that the rate of reaction is increasing as the source of light becomes more intense. A closer proximity is providing the plant with more energy and photons that will be converted into the production of glucose and oxygen. From point A to point B the graph is showing that when the light intensity increases so does a number of bubbles produced. This is because when the light becomes more intense, more

  • Unit 8 Lab: Photoelectric Effect Created By Young Su Kang

    430 Words  | 2 Pages

    something happens in a given period of time • Intensity- a measure of how much energy passes through a region in a given time • Photoelectric effect- the emission of electrons from the surface of a material when struck by electromagnetic radiation • Photon- the smallest possible amount of light; a quantum of light. • Voltage- a measure of the strength of an electrical field. • Wavelength- the distance between consecutive crests or troughs of a wave • Work function- the minimum energy required to remove

  • Albert Einstein's Theories That Have Affected The World

    875 Words  | 4 Pages

    Albert Einstein was born on March 14, 1879 in Ulm, Wurttemberg, Germany, six weeks later, Einstein would move to Munich and go to school there for the first time. He developed a deep interest in mathematics more than any other subject at a young age, so he completed school in Switzerland for physics and mathematics. He led important advancements, such as control of atomic energy, space exploration, and applications of light. Getting further into these details, they were leading into the atomic bomb

  • The Elegant Universe Summary

    885 Words  | 4 Pages

    The Elegant Universe by Brian Greene describes things about the universe that most people do not know, from superstring theory to additional dimensions. It describes superstring theory in detail; it describes the basic idea as well as its development through the years up until 1999, when the book was written. It also talks about other dimensions in the universe that are not obvious, which according to superstring theory there are between six and seven of. The book also goes over Calabi-Yau shapes

  • Adler Bohr Biography Essay

    1413 Words  | 6 Pages

    Biography Bohr, a Danish physicist, philosopher and promoter of scientific research, was born in Copenhagen, Denmark in 1885. His father, Christian Bohr, was a physiology professor at Copenhagen University. Bohr’s mother, Ellen Adler Bohr, came from a prominent wealthy Danish Jewish family. Bohr’s brother, Harald, became a great mathematician and footballer while Jenny, Bohr’s sister, became a teacher. Bohr went to Gammelholm Latin School at the age of seven and enrolled at Copenhagen University

  • Radio City Mural Analysis

    800 Words  | 4 Pages

    The mural on the radio city had a central section that showed a large hand holding a sphere emerging from an ambiguous machine (Linsey 50). These features explore the major theme of the art that of the interrelationship between the biological and the physical world (Linsey 50). The mural also depicts a clear bolt of lightning being captured by electrical equipment. These images have a common source in mass culture history, that of real scientific experiments (Linsey 50). The features in the mural

  • Non Ionizing Radiation Research Paper

    981 Words  | 4 Pages

    Radiation can be defined as the energy travelling through space which comes from a source and may be able to penetrate various materials. There are two types of radiation and they are the non-ionizing and ionizing radiation. Non-ionizing radiation consists of light, radio and microwaves. Whereby ionizing radiation can produce charged particles in matter, and ionizing radiation is produced by unstable atoms. The difference between unstable atoms and stable atoms is that unstable atoms have an excess