Is there any websites/companies that offer free smoke detectors? (michigan resident)?
I think it's usually glass in front of a thin layer of silver. Sometimes aluminum is used instead of silver.
what does - (2 functions) - gr.9 student mean? It is taller than any part of the house, and taller than any nearby trees or hills. And it has a point on the end. And it is a good conductor to ground, which means the pre-strike can easily climb up it. Lightening will be attracted to high pointed objects. The actual computations are a lot more complicated than that, but that's the idea.
