Skip to main content
Physics

Questions tagged [intensity]

Ask Question

The tag has no summary.

208 questions
Newest Active Bountied Unanswered
-3 votes
0 answers
80 views

I’ve seen this diagram and I’m curious about what the Mourou limit means there.
blademan9999's user avatar
  • 3,635
0 votes
1 answer
95 views

In my physics lecture I was told that intensity of light is directly proportional to (amplitude)^2 * (frequency)^2 Now I have a question about it; if intensity depends on frequency squared, shouldn’t ...
Thedha's user avatar
  • 19
-8 votes
1 answer
128 views

The following is a Cambridge A level exam question: Many sources say intensity is proportional to both the square of amplitude and square of frequency (sources included below) In this question, both ...
Colin Ngkl's user avatar
  • 1
1 vote
1 answer
93 views

Say I have a monochromatic Gaussian laser beam with electric field vector $\vec E(\vec r) = (E_x(\vec r), \; 0, \; 0)$ and, thus, with spatially homogeneous polarization vector $\vec\epsilon = (1, \; ...
dimitsev's user avatar
  • 61
4 votes
2 answers
270 views

I came across these interference patterns obtained from the double slit experiment online. I was expecting the brightness of the fringes to drop off at some what of a regular rate from the central ...
Kyathallous's user avatar
  • 1,006
2 votes
1 answer
124 views

I am facing a problem in studying diffraction patterns and it is related to the diffraction maxima. In my book I saw the following statement emphasized text(rough translation from original Romanian ...
Stefy's user avatar
  • 98
0 votes
0 answers
128 views

I was studying the 1926 paper "on the theory of quantum mechanics" of Dirac where he derives Einsteins coefficients of absorption and spontaneous emission using pertubation theory. I get ...
David's user avatar
  • 1
1 vote
0 answers
99 views

In Fizeau's experiment for the speed of light we find that $f_0$ is the lowest frequency for which all the light is blocked by the adjacent tooth. If we double the frequency we get the maximum amount ...
Jacob Daniels's user avatar
  • 141
0 votes
0 answers
86 views

I would like the correct, exact formula that will calculate solar intensity for me based on the sun's altitude. The formula proposed in many sources, like for example here: https://en.wikipedia.org/...
Geographos's user avatar
  • 51
2 votes
0 answers
112 views

For a plane wave of the form $E=E_0 \cos(\omega t- k z)$, the intensity is $I=\frac{1}{2}c\epsilon_0E_0^2$. This can be derived by noting that $I=\langle S\rangle$, where $\langle \,\rangle$ denotes ...
apadana's user avatar
  • 513
0 votes
0 answers
83 views

1- How can I calculate the sunlight intensity in percentage? (without external influences such as clouds or pollution). In this site SunCalc, Solar constant changes from location to site or from time ...
Ahmed Dyaa's user avatar
  • 121
0 votes
2 answers
132 views

I think there is something fundamental I'm not understanding about sound intensity. I have a small speaker at home, roughly 10cm square and the specs state it has 3 W output. That equates to 300 W/m^2 ...
Theo's user avatar
  • 11
1 vote
1 answer
408 views

I'm planning to go to shooting ranges soon, and am looking for ear protection. Let's say that I get an earmuff with a noise rating reduction (NRR) of $X\ \textrm{dB}$ and earplugs with $Y\ \textrm{dB}$...
Superman's user avatar
  • 111
1 vote
0 answers
57 views

I was trying to derive the formula for finding the intensity of the sound wave, after deriving it in my way i am missing a factor of 2 in the formula, Can I know what I am doing wrong ? Here is my ...
Utkarsh Kumar's user avatar
  • 11
1 vote
0 answers
46 views

In the $5.111$ MIT class, lecture $3$, it is written on the last slide "intensity of light = photons per second". Intensity is previously defined in the lecture as the square of the ...
niobium's user avatar
  • 754

15 30 50 per page
1
2 3 4 5
…
14