I need to measure a depth of a part of a material which is made up of the same material but density is differ, by using an electronic / electro magentic means. The scale of the abnormal part may be 5mm thick. We can use reflective method. I thought of the mechanism of Sonar, but the scale is too small to use sonar here. So, that's why I'm looking for a electromagnetic mean. The material may be a rubber sheet and there may be a small nipple like thing on it of height 5mm. The density difference is the main fact rather the part above the base material since the abnormality spreaded in to the material. We can say that I need only the homogenius material then I should remove the abnormal part. Please check the image on the url
Most states have laws forbidding following emergency vehicles while their lights sirens are on. As for following them other times; More police officers and firefighters are being ambushed while out on routine patrol or on runs. If they realize you are following them, You could enjoy what is know as a felony stop.
i used to be a paramedic and following the ambulances is indeed a crime in most states. i would recommend just watching for it on the news instead
you should not follow emergency vehicles, but you can listen in they are called scanners and you can listen to police and fire depts on this.
Contact the fire department. I once saw our fire deparkment take an axe to a car parked in front of a hydrant , knock both rear doors out and run a hose through the car.
