so in the example intensity 1 was 30mw/cm2 and intensity 2 was 60mw/cm2 i said to myself it was a +30 db change so +10 3times (1000x bigger) . I see that i was wrong but I'm not sure how to spot the difference when reading the problem without your help. HELP! lol thanks for these videos as I trudge my way through this course
Okay so attenuation happens more with High frequencies (used for shallower depth) but also long distances. It makes sense because the wave travels more but it also kind of confuses me
If we consider a change of +30 decibels, do we consider 3 multiplications of 10, I.e. a 1000x amplification, or 10 multiplications of 2, I.e. an amplification of 1024???
So are you telling me that we only use three and 10 for the logarithmic decibel measuring those the only two numbers reuse or is this just an example I need more examples to understand
In the practice shouldn't the total attenuation at 12cm be 72 dB for an atten co of 6? Not 64?
Yes u r right
there is a small mistake in 1:24:48
In 3rd example
total attenuation coefficient 6*12 = 72, not 64
thank you! you are the best!)
You are the best sononerd ever on whole UA-cam💕
Wishing you best of luck
Nd more power
Thanks alot for this...this s d best lecture i have ever across..U r really the best 🙏🥰
Thank you so much for your videos! It helps me a lot! 🙏🏻
You're so welcome!
so in the example intensity 1 was 30mw/cm2 and intensity 2 was 60mw/cm2 i said to myself it was a +30 db change so +10 3times (1000x bigger) . I see that i was wrong but I'm not sure how to spot the difference when reading the problem without your help. HELP! lol thanks for these videos as I trudge my way through this course
If intensity is DOUBLING (from 30 to 60), then you only gained 3 dB.
Is there anyway I could get your workbook, it would be extremely helpful for my classmates and I
Okay so attenuation happens more with High frequencies (used for shallower depth) but also long distances. It makes sense because the wave travels more but it also kind of confuses me
Thank you for these videos!!!!
Hello, can anyone would like to share the workbook? I am desperately looking for one. Thanks 🙏
docs.google.com/presentation/d/16OOvk5urHoHNnA6lv3M4WlAErD-MkSz5/edit?usp=share_link&ouid=115777313368910905514&rtpof=true&sd=true
If we consider a change of +30 decibels, do we consider 3 multiplications of 10, I.e. a 1000x amplification, or 10 multiplications of 2, I.e. an amplification of 1024???
You are correct with your 1st solution. A 10 x for each 10 dB. 10 x 10 x 10 = 1000 x stronger when there is an increase of 30 dB.
@@mollybattin9674 Thank you!
So are you telling me that we only use three and 10 for the logarithmic decibel measuring those the only two numbers reuse or is this just an example I need more examples to understand
Great job... ❤️
Thank you 🙏🏻
Great job! Really helpful!
thank you. very helpful