Washington, June 26: Researchers at the US Department of Energy’s Oak Ridge National Laboratory have demonstrated a device that can detect explosives at distances exceeding 20 yards, by converting reflected light into sound.

ORNL’s technique involves illuminating the target sample with an eye-safe pulsed light source and allowing the scattered light to be detected by a quartz crystal tuning fork.

“We match the pulse frequency of the illuminating light with the mechanical resonant frequency of the quartz crystal tuning fork, generating acoustic waves at the tuning fork’s air-surface interface,” said Charles Van Neste of ORNL’s Biosciences Division.

Tehran, June 26 : Archaeologists have used geological surveys in the south of Iran to reveal rectangular formations inspired by Greek architecture dating to the Sassanid era.

Washington, June 26 : A new study has suggested that droughts and downpours aggravated by climate change allowed two diseases to converge and wipe out large numbers of African lions in 1994 and 200

Washington, June 26: Your dream of having a Harry Potter ‘invisibility cloak’ could soon turn into a reality, thanks to researchers at the University of Illinois, who have developed a technique usi

Washington, June 26: Swedish researchers have used new exquisitely preserved fossils from Latvia to cast light on when our ancestors left the water and ventured onto land, which is a key event in o

Washington, June 26: The major drawback of gene therapy was the risks associated with using viruses as vectors to deliver healthy genes, but a new University of Georgia study has found a safe and e