Waves on the Ocean Waves on the Ocean
- Slides: 26
Waves on the Ocean
Waves on the Ocean Zumdahl, De. Coste, World of Chemistry 2002, page 324
Wavelength of a Wave Zumdahl, De. Coste, World of Chemistry 2002, page 324
Wavelength of a Wave Zumdahl, De. Coste, World of Chemistry 2002, page 324
Visible Spectrum of Light Waves 1/33, 000” long Red Orange Yellow Green Blue Indigo Violet f o y a R e hit ht g i L W Waves 1/70, 000” long Slit PRISM
Visible Spectrum of Light
Unplucked string 1 half-wavelengths 2 half-wavelengths 3 half-wavelengths
n = 4 orbit n = 6 orbit Only certain wavelengths will `fit' into an orbit. If the wavelength is longer or shorter, then the ends do not connect. Thus, de. Broglie explains the Bohr atom in that on certain orbits can exist to match the natural wavelength of the electron. If an electron is in some sense a wave, then in order to fit into an orbit around a nucleus, the size of the orbit must correspond to a whole number of wavelengths. http: //abyss. uoregon. edu/~js/21 st_century_science/lectures/lec 12. html
Waves • Wavelength ( ) - length of one complete wave • Frequency ( ) f - # of waves that pass a point during a certain time period – hertz (Hz) = 1/s • Amplitude (A) - distance from the origin to the trough or crest Courtesy Christy Johannesson www. nisd. net/communicationsarts/pages/chem
Waves crest A origin greater amplitude A (intensity) trough greater frequency (color) Courtesy Christy Johannesson www. nisd. net/communicationsarts/pages/chem
The Electromagnetic Spectrum L O W Increasing frequency Increasing photon energy AM radio E N E R G Y H I G H Decreasing wavelength V i s i b l e Television channels Short wave radio FM radio Radar Microwave Radio Waves L i g h t infrared R O Red Orange Y Yellow G Green B Blue UV Rays Gamma Rays X- Rays I Indigo V Violet E N E R G Y
Frequency 1 second Frequency 4 cycles/second = 4 hertz 12 cycles/second = 12 hertz 36 cycles/second = 36 hertz O’Connor, Davis, Mac. Nab, Mc. Clellan, CHEMISTRY Experiments and Principles 1982, page 166
Carrier frequency Sound pattern AM & FM Waves Amplitude Modulated carrier Frequency Modulated carrier
AM & FM Waves Carrier frequency AM - FM Radio Sound pattern Amplitude Modulated carrier Frequency Modulated carrier
Copyright © 2007 Pearson Benjamin Cummings. All rights reserved.
Electromagnetic Spectrum H I G H E N E R G Y Visible spectrum Violet 400 nm Blue Green 500 nm L O W Yellow Orange Red 600 nm 700 nm White Light g rays X-rays Ultraviolet Infrared Microwave Radio waves Radar TV Short FM Wave 10 -2 nm 10 -1 nm 100 nm 101 nm 102 nm 103 nm 10 -3 cm 10 -2 cm 10 -1 cm 100 cm 101 cm 101 m 102 m 103 m Long Wave 104 m Wavelength, 1019 Hz 1018 Hz 1017 Hz 1016 Hz 1015 Hz 1014 Hz 1013 Hz 1012 Hz 1011 Hz 1010 Hz 109 Hz 100 MHz 100 KHz Frequency, Electromagnetic spectrum Davis, Frey, Sarquis, Modern Chemistry 2006, page 98 E N E R G Y
Common wavelength units for electromagnetic radiation Unit Symbol Wavelength, (m) Type of Radiation Picometer pm 10 -12 Gamma ray Ångstrom Å 10 -10 X-ray Nanometer nm 10 -9 X-ray Micrometer mm 10 -6 Infrared Millimeter mm 10 -3 Infrared Centimeter cm 10 -2 Microwave Meter m 100 Radio Copyright © 2007 Pearson Benjamin Cummings. All rights reserved.
Waves long wavelength Amplitude Low frequency short wavelength Amplitude High frequency
Waves long wavelength Amplitude Low frequency 60 photons low energy short wavelength Amplitude High frequency 162 photons high energy
Red and Blue Light Photons - particle of light that carries a quantum of energy Zumdahl, De. Coste, World of Chemistry 2002, page 325
Electromagnetic Radiation Light as a wave Light as a stream of energy (packets of photons) Zumdahl, De. Coste, World of Chemistry 2002, page 325
Wavelength and Frequency “nu” “lambda” c = f E = h f c = speed of light (3 x 108 m/s) f = frequency (s-1) = wavelength (m) E = energy (Joules or J) h = Planck’s constant (6. 6 x 10 -34 J/s) f = frequency (s-1)
Electromagnetic Spectrum • Frequency & wavelength are inversely proportional c = c: speed of light (3. 00 108 m/s) : wavelength (m, nm, etc. ) : frequency (Hz) Courtesy Christy Johannesson www. nisd. net/communicationsarts/pages/chem
Electromagnetic Spectrum • EX: Find the frequency of a photon with a wavelength of 434 nm. GIVEN: f=? = 434 nm WORK: 1 m 1 x 109 nm = 4. 34 10 -7 m c = 3. 00 108 m/s f = 3. 00 108 m/s 4. 34 10 -7 m f = 6. 91 1014 Hz Courtesy Christy Johannesson www. nisd. net/communicationsarts/pages/chem
Wavelength and Frequency “nu” “lambda” c = f E = h f c = speed of light (3 x 108 m/s) f = frequency (s-1) = wavelength (m) E = energy (Joules or J) h = Planck’s constant (6. 6 x 10 -34 J/s) f = frequency (s-1)
- Convergent boundary
- Convergent oceanic oceanic plate boundary
- Ocean ocean convergent boundary
- Blue og red ocean
- Convergent boundaries features
- Nekton include all animals that
- Ocean ocean convergent boundary
- Scrat s continental crack up
- Beach similes
- Current pattern
- Diffraction ocean waves
- Ocean waves
- Types of tides
- Citlalli dominguez
- Ocean waves
- Characteristics of mechanical waves
- Venn diagram of mechanical and electromagnetic waves
- What is a semiconductor used for
- Seismic waves
- Mechanical waves and electromagnetic waves similarities
- Constructive
- Mechanical waves and electromagnetic waves similarities
- Similarities of mechanical and electromagnetic waves
- Is a seismic wave mechanical or electromagnetic
- The wave chapter 13
- Electromagnetic waves vs mechanical waves
- Longitudinal vs transverse wave