University of Colorado
University of Colorado: Ph Et Interactive Simulations: Models of the Hydrogen Atom
How did scientists figure out the structure of atoms without looking at them? Try out different models by shooting light at the atom. Check how the prediction of the model matches the experimental results.
Florida State University
Florida State University: Molecular Expressions: Primary Additive Colors
Manipulate the primary color circles of light to see how overlapping the circles affect the colors. An explanation is included.
Florida State University
Florida State University: Molecular Expressions: Primary Subtractive Colors
Manipulate "pigmented" color discs to see how mixing subtractive colors affect the overall color.
Khan Academy
Khan Academy: The Quantum Mechanical Model of the Atom
An explanation using quantum mechanics to describe the atom.
NASA
Nasa: Imagine the Universe: Active Galaxies and Quasars
Describes quasars as being classified within the category of an active galaxy. A description of the emergence of high-energy. Definitions of key words are provided.gamma-ray quasars as an important component of the gamma-ray sky.
Nobel Media AB
The Nobel Prize: Arthur Holly Compton Biographical
In addition to overviewing Compton's (1892-1962 CE) studies in x-rays, this article includes information on Compton's published works, his education, and personal life.
Science Struck
Science Struck: A Comprehensive List of All the Physics Formulas
Provides a long list of physics formulas for easy reference.
Texas Education Agency
Texas Gateway: Physics of Hearing: Problems and Exercises
This is a list of 84 problems and exercises to solve based on the content of Chapter 17: Physics of Hearing from the AP Physics online text.
Texas Education Agency
Texas Gateway: Physics of Hearing: Conceptual Questions
This is a list of 15 questions based on the major concepts presented in Chapter 17: Physics of Hearing from the AP Physics online text.
Discovery Education
Discovery Education: 3 M Young Scientist Lab: Triboluminescence
Detectable flashes of light are released as wintergreen-flavored candies are crushed in darkness.
NASA
Nasa: Mission: Science: Electromagnetic Spectrum: Infrared Waves
Infrared light lies between the visible and microwave portions of the electromagnetic spectrum. Infrared light has a range of wavelengths, just like visible light has wavelengths that range from red light to violet.
CK-12 Foundation
Ck 12: Physical Science: Properties of Electromagnetic Waves
[Free Registration/Login may be required to access all resource tools.] The speed of electromagnetic waves, their wavelengths and frequencies and how to calculate wavelength or wave frequency.
Curated OER
Georgia State University: Color
This site from Georgia State University discusses the location of visible light on the electromagnetic spectrum. Includes the wavelength values for various colors of light within the visible light spectrum.
Curated OER
Georgia State University: Color
This site from Georgia State University discusses the location of visible light on the electromagnetic spectrum. Includes the wavelength values for various colors of light within the visible light spectrum.
Georgia State University
Georgia State University: Hyper Physics: Hydrogen Energies and Spectrum
This site from Georgia State University gives information on the transitions of electrons between energy levels. The energy levels for electrons in the hydrogen atom are discussed. The Rydberg equation is stated and electron transitions...
McGraw Hill
Mc Graw Hill Higher Education: Johnson Explorations: Photosynthesis
Photosynthesis is illustrated in this interactive. Begin by looking at a chloroplast and follow the path of electrons throughout. Discover what can affect the rate of photosynthesis by adjusting the light intensity and light wavelength.
University of California
U.c. Berkeley: Spectra From Space
View the entire spectrum of electromagnetic radiation and get information on telescopes especially designed to view different wavelengths of the spectrum.
Texas Instruments
Texas Instruments: Blackbody Radiation
This program will produce the blackbody radiation curve for one or two objects when the student inputs the temperature(s) in kelvin. The program will also display on the curve the peak frequency and wavelength when one object is selected.
Texas Instruments
Texas Instruments: Phosphate Analysis
One method of measuring phosphate concentration is by using a Colorimeter. This instrument measures the amount of light transmitted through a sample at a given wavelength.The amount of light absorbed is mathematically related to the...
University of Colorado
University of Colorado: Physics 2000: Balmer's Formula
A short description of a physics lab involving the determination of the wavelength of the four spectral lines in the hydrogen emission spectrum. Perhaps the most important part of the page is the picture of the spectrometer.
My Science Site
Electromagnetic Spectrum: Colour and Waves
This resource provides information on the different wavelengths that make up the electromagnetic spectrum. Also contains information on waves and color.
Friesian School
Proceedings of the Friesian School/the Quantacized Atom
A very lengthy page from friesian.com discussing Bohr's theory of electronic energy levels and the explanation of commonly observed atomic emission line spectra. The concept of a photon and Einstein's observation of the photoelectric...
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Multiple Slit Diffraction Model
Simulation that shows the diffraction of light through single or multiple slits. Simulation allows modification of the number of slits, slit width, slit separation, and the wavelength.
State University of New York
State University of New York: Atomic Absorption and Emission
This module simulates the excitation of hydrogen atoms through irradiation with electromagnetic radiation of different wavelengths.
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