A transparent film (n 1.31) is deposited on a glass plate (n 1.52) to form a nonreflecting coating. The film has a thickness that is 1.08 10-7 m. What is the longest possible wavelength (in vacuum) of light for which this film has been designed?
No, a property owner cannot change the right of way (the road itself and a certain number of feet on either side of the pavement) without the approval of the Virginia Department of Transportation. If you do alter the right of way, and the Department must repair it to its original condition, you will be billed for the labor and materials used by the Department in that repair. Your best bet would be to contact your local board of supervisors/city council and ask for their assistance, or contact your local VDOT residency.
The more you expose contained water to the air, it can go stagnant if you try to save it. But to answer your question, the pressure get built up in the lines so they release it at low usage times. Believe it or not, fire houses keep records on the where, when and why's of all area fires, so they turn up the pressure a little when they think it might be a peak summer/fall. Hopefully they are wrong so they release the pressure and at the same time, test the hydrant for water pressure release. It is vital they do these tests and they are timed for certain areas depending on the number of properties or dryness of the grounds. Plus the pressure of the water almost makes it impossible to recycle because it would defeat the purpose of seeing it released if it went through a hose and back into a container!
We always referred to them as sound shells. They help the acoustics, somehow.
