Interference from two radio antennae - simplistic and workings include

[elemis]

Is this correct ?

I have an issue for the minima formula when n=1 I get theta = 90 degrees.

This doesn't make any sense.

Is my method correct ?

 

[TSny]

Your general method is correct, but your formula for the minima is incorrect. Check your notes or text.

 

[elemis]

Your general method is correct, but your formula for the minima is incorrect. Check your notes or text.

The formulas listed were in my notes.

Okay, for minima : 2λsinθ = mλ m=0.5,1.5,2.5,3.5...

This would give me the required non-integr half wavelengths for a minima, correct ?

EDIT : Hence m =0.5 would mean the first minima is at 30 degrees.

maxima : 2λsinθ = nλ n = 0,1,2,3,4,5...

For n =1 I still get theta to be 90 degrees... I don't see what I'm doing wrong.

 

[rude man]

Your minima formula is wrong.

 

[elemis]

Your minima formula is wrong.

Can you check the post above yours, please ?

 

[rude man]

The formulas listed were in my notes.

Okay, for minima : 2λsinθ = mλ m=0.5,1.5,2.5,3.5...

This would give me the required non-integr half wavelengths for a minima, correct ?

EDIT : Hence m =0.5 would mean the first minima is at 30 degrees.

No. 2sin(theta) = 0.5 does not yield theta = 30 deg.

maxima : 2λsinθ = nλ n = 0,1,2,3,4,5...

For n =1 I still get theta to be 90 degrees... I don't see what I'm doing wrong.

No. 2sin(theta) = 1 does not yield theta = 90 deg.

 

[elemis]

No. 2sin(theta) = 0.5 does not yield theta = 30 deg.



No. 2sin(theta) = 1 does not yield theta = 90 deg.

Ah, God, silly mistakes... Forgive my lapse in concentration. Its pretty late where I am right now.

I've understood this question now. Thank you.