Recent content by sailordragonball

Q = 12 XL = 120

Is there an equation to calculate diffraction?

It doesn't seem that I'm looking for an angle ... does anyone else have an idea?

I know ... ... sin of theta = lambda / D ... therefore, I concluded with ... ... sin of theta = ( .01715 / .072 ) ... sin of theta = .238 ... ... but, I'm not trying to find an angle ... am I?

I solved for lambda ... ... velocity = (lambda * frequency) ... solving for lambda ... ... lambda = (velocity / frequency) ... ... lambda = ( 343 / 2e4 ) ... lambda = .01715m

I came up with this ... ... 45 = 10 log ( I / 1e-10 ) = 10 log ( 1.3e-12 / 1e-10 ) ... ... does that sound right? LOL

<< Direct answer deleted by berkeman -- please don't post the answer. Just help guide the OP to the answer with hints. >>

Yeah, I read in the book that it was the ABSOLUTE VALUE ... I'm just a nerd. Thanks.

That's for sure ... [sigh of relief]

OIC ... I understand now ... something was wrong when you gave your example ... LOL - thanks.

It's OK, Turbo-1 ... I still don't get it ... LOL - but, I got the answer ... but, I would like a mathematical explanation though.

LOL - it's all good!

I'm more of a "hands-on" math concept guy ... rotational kinematics and torques killed me last chapter ... I don't know what equations to use to set up a problem. Make sense?

I think I have to revisit working with logs ... it's been a while ... LOL - I'll get back to you though.

I went to the Hyperphysics website ... and got the jist of it ... but, it's not clear to me yet ... any other suggestions or walkthroughs?