News tagged with strength

Wi-Fi signals can see through walls

(PhysOrg.com) -- Researchers at the University of Utah, USA, have discovered that variations in signal strengths in wireless networks can be used to "see" movements of people on the other side of walls or doors.

dateOct 05, 2009 in Engineering weblog
shares0 comments 2

Using magnets to help prevent heart attacks

If a person's blood becomes too thick it can damage blood vessels and increase the risk of heart attacks. But a Temple University physicist has discovered that he can thin the human blood by subjecting it to a magnetic field.

dateJun 07, 2011 in General Physics
shares0 comments 8