One comment I would like to add with respect to the signal we see being transformed in the video: notice that the signal I reference oscillates between + and - 0.04V. Only positive voltages are being collected by the solar cell, in fact the original oscillations were centered about +2V. To get only the AC component to process, you *subtract off the DC offset* (by collecting the mean of the original signal, then subtracting that off). If you don't subtract DC offsets off, you will get a giant impulse around 0Hz in your frequency domain.
Is there any reason why u prefered to use the linear frecuency? I mean the angular frecuency omega is just less convoluted to write and deal with, i guess that there are moments where using one is better than the other, if you can provide me any example of where o when is better to use frecuency f than frecuency w. I have only use the angular frcuency in all my signals and sistems class about fourier and laplace transform.
While there's no real difference, the choice followed from the physical example which we used Hz. Naturally in experiment and real world applications I see f more, and in problem solving w. I structure my videos to be consistent throughout, including units, so if I'm going to use Hz in the example, the Fourier transform is written the same
hi, i have absolutely no idea of what you are talking about, you just appeared in my home page, tho i learned a thing or two, i recommend using a different cursor or something because i did get lost with it, didnt knew where the cursor was
Thanks for the feedback, I'll look into using a larger cursor, maybe with more contrast from the white background. Feel free to let me know if you have any questions about the video
![Megan Thee Stallion - Bigger In Texas [Official Video]](http://i.ytimg.com/vi/QxTkZTLWdo4/mqdefault.jpg)
One comment I would like to add with respect to the signal we see being transformed in the video: notice that the signal I reference oscillates between + and - 0.04V. Only positive voltages are being collected by the solar cell, in fact the original oscillations were centered about +2V. To get only the AC component to process, you *subtract off the DC offset* (by collecting the mean of the original signal, then subtracting that off). If you don't subtract DC offsets off, you will get a giant impulse around 0Hz in your frequency domain.
An insightful and balanced approach from a practical standpoint!
Excellent, glad to hear you enjoyed Aamid
Is there any reason why u prefered to use the linear frecuency? I mean the angular frecuency omega is just less convoluted to write and deal with, i guess that there are moments where using one is better than the other, if you can provide me any example of where o when is better to use frecuency f than frecuency w. I have only use the angular frcuency in all my signals and sistems class about fourier and laplace transform.
While there's no real difference, the choice followed from the physical example which we used Hz. Naturally in experiment and real world applications I see f more, and in problem solving w. I structure my videos to be consistent throughout, including units, so if I'm going to use Hz in the example, the Fourier transform is written the same
hi, i have absolutely no idea of what you are talking about, you just appeared in my home page, tho i learned a thing or two, i recommend using a different cursor or something because i did get lost with it, didnt knew where the cursor was
Thanks for the feedback, I'll look into using a larger cursor, maybe with more contrast from the white background. Feel free to let me know if you have any questions about the video
@@madaydude_physics yeah, any non white cursor will be way nicer
@@madaydude_physics also, really cool videos!
The voltage at 0:39, how have you obtained it?
Measured the signal received by the solar cell from the home lights, then subtracted the dc offset leaving the oscillations only.