http://www.ck12.org Chapter 5. Energy
- Image copyright Alexander Raths, 2013. Ultrasound is used to examine internal organs and unborn babies.
Used under license from Shutterstock.com - Christopher Auyeung. Magnetic field of a bar magnet. CC BY-NC 3.0
- Christopher Auyeung. Electric field exerted by a point charge. CC BY-NC 3.0
- Christopher Auyeung. Diagram illustrating how electromagnetic waves are created and propagate. CC BY-NC
3.0 - Christopher Auyeung. Diagram illustrating how photons are created. CC BY-NC 3.0
- Zachary Wilson. Double slit experiment. CC BY-NC 3.0
- Christopher Auyeung. Wavelength in relation to frequency for electromagnetic waves. CC BY-NC 3.0
- Courtesy of NASA. The electromagnetic spectrum spans a wide range of wavelengths and frequencies. public
domain - Courtesy of NASA. Radio waves lie at the far left of the electromagnetic spectrum. Public Domain
- Christopher Auyeung. Diagram illustrating the difference between AM and FM waves. CC BY-NC 3.0
- Courtesy of NASA.. Public Domain
- Christopher Auyeung. Diagram of how a cell phone works. CC BY-NC 3.0
- Laura Guerin. Radar can be used to measure the speed of moving cars. CC BY-NC 3.0
- Courtesy of NASA. Infrared, ultraviolet, and visible light fall in the middle of the electromagnetic spectrum.
Public Domain - User:Phrood/Wikimedia Commons. Visible light spectrum. Public Domain
- Tom Newby. Sunscreen helps protect skin from sunburn. CC BY 2.0
- Courtesy of NASA. X rays lie at the high energy end of the electromagnetic spectrum. Public Domain
- Gwydion M. Williams. X ray luggage scanner images. CC BY 2.0
- Courtesy of NASA. Gamma rays lie at the far end of the electromagnetic spectrum. Public Domain
- Casey Fleser. Incandescent lightbulb with glowing filament. CC BY 2.0
- Jonathan Gibbs (Wikipedia: FastbackJon). Luminescent dashboard. Public Domain
- Mike Lewinski. Bioluminescent fireflies. CC BY 2.0
- Nazareth College. Moon light landscape. CC BY 2.0
- Olga Reznik. Incandescent lightbulb. CC BY 2.0
- Vasenka Photography. Fluorescent lightbulb. CC BY 2.0
- Brian Kelly. Neon light. CC BY 2.0
- Robert Ashworth. Vapor light. CC BY 2.0
- User:Bidgee/Wikimedia Commons. LED light. CC BY 3.0
- Left: Bart Everson; Right: Diesel Demon. Regular and diffuse reflection. CC BY 2.0
- Iain Watson. Bent straw in water. CC BY 2.0
- Sarah Fleming. Light scattering in fog. CC BY 2.0
- Terisa Folaron. Light passes through transparent objects. CC BY 2.0
- Left: Flickr:garycycles7; Right: John Loo. Opaque objects. CC BY 2.0
- Christopher Auyeung. Visualization of different wavelengths of color. CC BY-NC 3.0
- Ivan T. Prism splitting light. CC BY 2.0
- Flickr:Gorupka. Leaves are green because they reflect green light. CC BY 2.0
- Kirsty Hall. Colored translucent and transparent materials appear the way they do because of the way they
transmit light. CC BY 2.0 - User:DarkEvil/Wikimedia Commons. The three primary colors. Public Domain
- Selma Broeder. Green apple. CC BY 2.0
- Left: Kenneth Baruch; Right: Damian Gadal. Regular and diffuse reflection. CC BY 2.0
- Joy Sheng. Schematic of regular and diffuse reflection. CC BY-NC 3.0
- Christopher Auyeung. Law of reflection. CC BY-NC 3.0
- Mike Baird. Object and reflection. CC BY 2.0
- Zachary Wilson. Sun and reflection. CC BY-NC 3.0
- Roman Soto. Diagram of plane mirror. CC BY 2.0
- Christopher Auyeung. Diagram of concave mirror. CC BY-NC 3.0