6.1: The Wave Nature of Light
oElectromagnetic decrease beam (radiant aptitude): a form of energy that has wave characteristics and that propagates through a vacuum at the characteristic speed of 3.00 x 108 m/s (speed of light)
Carries energy through space
Different forms all lot some characteristics
oWavelengths: distance between 2 b establishing peaks
oFrequency: number of complete wavelengths, or cycles, that disco biscuit a given point each second
Shorter wavelength= naughtyer frequencies
oAmplitude: vertical distance from midline of wave to its peak
oOrder on spectrum: gamma; x-rays; ultraviolet; visible; invisible; microwaves; radio frequencies
oSpeed of wavelength (c) = wavelength times frequency
6.2: Quantized thrust and Photons
oSolids heated= dismiss radiation
Wavelength distribution of radiation depends on temperature
oQuantum (fixed amount): smallest quantity of energy that can be emitted/ mantled as electromagnetic radiation
oE=h x v
E: energy
H: constant (plancks constant; 6.
626 x 10-34 Joules per second)
V: frequency of radiation
oMatter can emit/absorb energy only in whole-number multiples of hv
o pretence for quantized energy: walking up stairs
Increases in a stepwise, quantized manner
oPhotoelectric effect: when photons of sufficiently high energy strike a metal rise, negatrons be emitted from the metal.
The emitted electrons are drawn toward the positive terminal. As a result, current flows in the circuit
oPhoton: smallest increment (quantum) of radiant energy; a photon of light with frequency v has an energy equal to hv
energy big money that behaves like a tiny particle
oRadiant energy itself is quantized
oPhoton can strike a metal surface and be absorbed. It can transfer its energy to an electron in the metal. A certain amount of energy, called the work function, is required for an electron to overcome the...If you want to get a full essay, order it on our website: Orderessay
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