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Gemcra! Frimciples
Gemcra! Frimciples

Ch 01
Ch 01

Waves 3 (polarized light)
Waves 3 (polarized light)

... antinodes, respectively. So both waves must be passing through the two slits at the same time. But, only one electron at a time was used here. That implies that an electron would have to interfere with itself by going through each of the slits at the same time! This is a ridiculous sounding idea, bu ...
Photosynthesis
Photosynthesis

... Photosynthesis is a process in which plants use light, water, and carbon dioxide to produce sugars, water and oxygen. Chlorophyll a and chlorophyll b, in the chloroplasts of a leaf, are responsible for absorbing wavelengths of light for use in photosynthesis with red and blue wavelengths being optim ...
Blackbody Radiation - High Point University
Blackbody Radiation - High Point University

Blackbody Radiation - High Point University
Blackbody Radiation - High Point University

Radiative Processes in Astrophysics
Radiative Processes in Astrophysics

... and bremsstrahlung. Generally, we are interested in the spectrum of the radiation from the astrophysical objects. Hence, we shall focus on the spectral properties of the radiation and the factors which change them. Later, we study simple cases specific to these processes and understand how different ...
Review Questions for 1st year chemistry
Review Questions for 1st year chemistry

... This is a decomposition type 2c, metallic hydrogen carbonate decomposes into metal oxide, water and carbon dioxide. MHCO3 MO + H2O + CO2 Remember to cross charges to get formula for MO. ...
WAKE UP AND SMELL THE FUNCTIONS
WAKE UP AND SMELL THE FUNCTIONS

... of force” that emanated from their north poles and converged on their south poles. He called these lines of force a magnetic field. To Faraday, Ampère’s discovery hinted that magnetic fields and electric current were related. In 1831 he found out how. Faraday discovered that moving a magnet near a c ...
Influence of the chemical potential
Influence of the chemical potential

MSci Project Talk
MSci Project Talk

Magnet and Magnetism What Causes Magnetism Hard and Soft
Magnet and Magnetism What Causes Magnetism Hard and Soft

Answers to Challenge/ extension
Answers to Challenge/ extension

... 2) How can you increase the potential energy of an object? 3) What happens to your potential energy as you go up in an airplane? Compared to what? 4) If an object weighs 500 N and you lift it 2 m, a) how much work have you done on it? b) how much potential energy does it have relative to its startin ...
A Novel Model of the Atom - Scientific Research Publishing
A Novel Model of the Atom - Scientific Research Publishing

LUCIFER: Neutrinoless Double Beta Decay search with scintillating
LUCIFER: Neutrinoless Double Beta Decay search with scintillating

Understanding Electronic WaveFunctions
Understanding Electronic WaveFunctions

... of the homogeneous electron gas. First, I motivate the discussion, then briefly give references to the quantum Monte Carlo methods, discuss the pair product wavefunction and its generalization to backflow and three body wavefunctions. Finally, I conclude with some current difficulties in extending t ...
1 - Academics
1 - Academics

Document
Document

... A substance that contains different elements that have been chemically combined Empirical formulae The simplest ratio showing the different types of atom present in a substance. Molecular formulae The actual numbers of each type of atom in a molecule of the substance. ...
Charge to Mass of Electron
Charge to Mass of Electron

Properties of waves
Properties of waves

... If the angle of incidence increases any more it is impossible for the light to refract (since the angle of refraction would be greater than 900 so the light would not leave the glass) and so all the light reflects. This is called Total Internal Reflection (TIR). This is shown in diagram 3. ...
Homework - Exam From last time… Time dilation, length contraction
Homework - Exam From last time… Time dilation, length contraction

atomic physics worksheet
atomic physics worksheet

Electron Beam Focusing for the International Linear Collider
Electron Beam Focusing for the International Linear Collider

Plasma Physics Definitions
Plasma Physics Definitions

physics syllabus - CurriculumOnline.ie
physics syllabus - CurriculumOnline.ie

... Ordinary and Higher levels, so that students can place physics within the everyday world. The STS material needs to be known at the appropriate level; that is, where the basic principle is on the Ordinary level, examples must be known at Ordinary level, and similarly at Higher level. Only the princi ...
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Photoelectric effect

The photoelectric effect is the observation that many metals emit electrons when light shines upon them. Electrons emitted in this manner can be called photoelectrons. The phenomenon is commonly studied in electronic physics, as well as in fields of chemistry, such as quantum chemistry or electrochemistry.According to classical electromagnetic theory, this effect can be attributed to the transfer of energy from the light to an electron in the metal. From this perspective, an alteration in either the amplitude or wavelength of light would induce changes in the rate of emission of electrons from the metal. Furthermore, according to this theory, a sufficiently dim light would be expected to show a lag time between the initial shining of its light and the subsequent emission of an electron. However, the experimental results did not correlate with either of the two predictions made by this theory.Instead, as it turns out, electrons are only dislodged by the photoelectric effect if light reaches or exceeds a threshold frequency, below which no electrons can be emitted from the metal regardless of the amplitude and temporal length of exposure of light. To make sense of the fact that light can eject electrons even if its intensity is low, Albert Einstein proposed that a beam of light is not a wave propagating through space, but rather a collection of discrete wave packets (photons), each with energy hf. This shed light on Max Planck's previous discovery of the Planck relation (E = hf) linking energy (E) and frequency (f) as arising from quantization of energy. The factor h is known as the Planck constant.In 1887, Heinrich Hertz discovered that electrodes illuminated with ultraviolet light create electric sparks more easily. In 1905 Albert Einstein published a paper that explained experimental data from the photoelectric effect as being the result of light energy being carried in discrete quantized packets. This discovery led to the quantum revolution. In 1914, Robert Millikan's experiment confirmed Einstein's law on photoelectric effect. Einstein was awarded the Nobel Prize in 1921 for ""his discovery of the law of the photoelectric effect"", and Millikan was awarded the Nobel Prize in 1923 for ""his work on the elementary charge of electricity and on the photoelectric effect"".The photoelectric effect requires photons with energies from a few electronvolts to over 1 MeV in elements with a high atomic number. Study of the photoelectric effect led to important steps in understanding the quantum nature of light and electrons and influenced the formation of the concept of wave–particle duality. Other phenomena where light affects the movement of electric charges include the photoconductive effect (also known as photoconductivity or photoresistivity), the photovoltaic effect, and the photoelectrochemical effect.
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