Here, we are going to build small circuit named metal detector circuit which is used to check the persons in shopping malls, cinema halls, etc. to ensure that person is not carrying any explosive ...

Keeping students safe remains a top priority for public school districts across the country, but school security often doesn’t become a serious conversation until a crisis occurs. While the National ...

Add Yahoo as a preferred source to see more of our stories on Google. Students taking summer classes at John I. Leonard High School in Greenacres became some of the first students in the county to ...

This homemade metal detector circuit will help you find objects composed of materials with relatively high magnetic permeability. It is not suitable for buried coins discovery that is not sensitive ...