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.
You know the roof is bad if shingles are missing or obviously damaged, or when water stains the ceiling or walls. The goal is to find the leak before the entire roof goes bad. Identifying the true location of roof leaks in the attic.If you have an attic, the easiest way to spot the leak is to up there on a rainy day.Water will reflect light, so bring a flashlight along.Once you locate the source of the water, mark the area.dentifying the true location of roof leaks in the attic. If you have an attic, the easiest way to spot the leak is to up there on a rainy day. Water will reflect light, so bring a flashlight along. Once you locate the source of the water, mark the area.
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.