1 / 13

The Electromagnetic Spectrum

The Electromagnetic Spectrum. Characteristics of waves. Peak Trough Amplitude Wavelength (  ) (in meters) Frequency measured in Hertz: (Hz): cycles per second. Mathematical Relationship. Speed of a wave = wavelength * frequency v= f Increased frequency has increased energy

micheline-blanc
Télécharger la présentation

The Electromagnetic Spectrum

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Electromagnetic Spectrum

  2. Characteristics of waves • Peak • Trough • Amplitude • Wavelength () (in meters) • Frequency measured in Hertz: (Hz): cycles per second

  3. Mathematical Relationship • Speed of a wave = wavelength * frequency • v=f • Increased frequency has increased energy • for Electromagnetic waves: • Speed = 3.0x108 m/s (speed of light) • c = 3.0x108 m/s

  4. Types of Electromagnetic radiation Large  Small f Low NRG Radio Waves Microwaves Infrared Visual Light Ultra Violet X-Ray Gamma Ray Rabid Monkeys In Violet Underpants eXterminate Gibbons Small  Large f High NRG

  5. The Visible Light Spectrum • Range of wavelengths in the visible spectrum 7.5 x 10-7 m 4 x 10-7 m 750nm 400nm R O Y G B I V

  6. White LIght • All colours added together

  7. Line Spectrum • Continuous Colour Spectrum A line spectrum consists of distinct bright lines appearing on a dark background that occur in different parts of the visible spectrum.

  8. Atoms Emitting Light • An atom excited by addition of energy (heat) will send off electron(s) from its orbital. As the electron returns, it emits electromagnetic waves, and can be seen as coloured light. • P.143

  9. Unique Fingerprint

  10. http://www.lon-capa.org/~mmp/kap29/Bohr/app.htm • http://physics.gac.edu/~chuck/PRENHALL/Chapter%2031/AABXTEI0.html • http://mo-www.harvard.edu/Java/MiniSpectroscopy.html • http://jersey.uoregon.edu/vlab/elements/Elements.html • http://www.colorado.edu/physics/2000/quantumzone/index.html

More Related