- #1
Qais M.
- 4
- 0
Does light intensity and brightness depend on amplitude?
Light waves and their properties
- Context: High School
- Thread starter Qais M.
- Start date
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- Tags
- Light Light waves Properties Waves
Click For Summary
Discussion Overview
The discussion revolves around the properties of light waves, specifically focusing on the relationship between amplitude, brightness, intensity, and energy. It includes inquiries about the effects of amplitude on brightness, the distinction between photon energy and wave energy, and the mechanism of light polarization.
Discussion Character
- Exploratory
- Technical explanation
- Conceptual clarification
Main Points Raised
- Some participants assert that brightness and intensity of light are dependent on the amplitude of light waves, with additional influence from wavelength.
- One participant seeks a detailed explanation regarding how amplitude affects brightness and intensity.
- A participant clarifies that brightness or intensity is proportional to the square of the amplitude of the wave.
- There is a distinction made between the energy of individual photons, which is proportional to frequency, and the total energy of the wave, which is proportional to the square of the amplitude.
- A question is raised about how polarizers work, specifically regarding the arrangement of molecules and their relationship to the electric field of light.
Areas of Agreement / Disagreement
Participants generally agree on the relationship between amplitude and brightness/intensity, but there are varying levels of understanding and clarity regarding the underlying principles. The discussion on polarizers introduces a new topic that remains unresolved.
Contextual Notes
Some assumptions regarding the definitions of brightness, intensity, and energy may not be explicitly stated, and the relationship between amplitude and frequency is not fully explored in terms of its implications.
Who May Find This Useful
Individuals interested in the properties of light waves, including students and professionals in physics, optics, and engineering may find this discussion relevant.
- #2
Ryan McCarty
- 6
- 1
Yes, brightness of light and its intensity depend on light wave amplitude, or the height of light waves. Brightness is also somewhat influenced by wavelength.
- #3
Qais M.
- 4
- 0
Ryan McCarty said:
Thanks! Is there any detailed explanation on that? Thanks in advance!
- #4
Qais M.
- 4
- 0
Light waves (in general)
1-How does the amplitude affects the brightness and intensity of light waves?
2-And why energy affects the frequency of light waves rather than their amplitude; why doesn't the amplitude increase or decrease when extra or less energy is transferred by the wave instead of the frequency?
Thanks in advance!
1-How does the amplitude affects the brightness and intensity of light waves?
2-And why energy affects the frequency of light waves rather than their amplitude; why doesn't the amplitude increase or decrease when extra or less energy is transferred by the wave instead of the frequency?
Thanks in advance!
- #5
dauto
- 1,948
- 201
1 - Brightness or Intensity are proportional to the square of Amplitude.
2 - You're confusing the energy of individual photons (which is proportional to the frequency) with the total energy of the wave (which is proportional to the square of the amplitude of the wave)
2 - You're confusing the energy of individual photons (which is proportional to the frequency) with the total energy of the wave (which is proportional to the square of the amplitude of the wave)
- #6
Qais M.
- 4
- 0
How do polarizers polarize light? Are the molecules arranged in a shape the the slits between them are parallel or perpendicular to the electric field of light? If they're perpendicularly arranged, how would light be polarized?
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