Recent content by Dickie

Thank you both for your replies. After reading the info and links above, I managed to find the following equation related to single slit diffraction experiments: d sin(theta) = n * lambda Re-arranging to find theta, there is a clear mathematical link between reduced wavelength and a smaller...

I'm currently trying to get my head around the properties of UHF vs VHF propagation, specifically to do with diffraction around terrain and obstacles of various sizes (i.e buildings, vegetation etc). I understand from experience that UHF is generally more suitable in built up, urban...

Thanks again, I always find it's the basics which trip me up. I'm returning to study in my 30s for an MSc and have been given these questions as part of some pre-course work to do to refresh my maths - despite having done well at maths in the past, it turns out there are more than a few gaps in...

So, in answering your question I've realized the following: (-4)^2 = 16 -4^2 = -16 This seems to be the source of my confusion for the first question, so thank you. This also seems to apply for the second question where I think I should have used: (-2)^-2 = 1/4 Thanks again - I thought it...

I am able to simplify/evaluate the above equations correctly, however I end up with an incorrect sign for each answer (i.e positive when it should be negative) and I can't see where the error is. I feel I am clearly missing something but having checked my working including with a calculator for...