Amplitude is the maximum displacement-I.e. the distance from the peak of the wave to its middle (generally zero) Frequency is the number of oscillations (complete wavelengt â¦ hs) per second.
Roof leaks can be hard to find, since they often run down the underside of sheathing or rafters to show up far from their actual source. The best time to try and find a leak is when itâs raining outside, or you can also mimic rain conditions by spraying water on the roof.Go in the attic and look for damp spots or water stains, trace them back to their highest point, then examine that part of the roof for any potential problems.he best time to try and find a leak is when itâs raining outside, or you can also mimic rain conditions by spraying water on the roof. Go in the attic and look for damp spots or water stains, trace them back to their highest point, then examine that part of the roof for any potential problems.
GO WITH THE PRO: Assessing a roof leak. Some overhead leaks are due to minor problems--such as a single torn shingle or a small hole in flashing--that you can usually handle with a little DIY experience and some basic tools. But other situations call for a roofer's expertise.ome roof problems are clearly for experts, but you should be able to fix minor leaks and broken shingles yourself.