FULLY WATERPROOF. Don't stop your search at the beach or the bank. This metal detector is fully waterproof and submersible up to up to 16 ft (5 m) so you can find gold, silver, jewelry ...

The best metal detectors can make all the difference whether ... Multiple frequency detection Submersible down to 10 feet Multiale detection modes ...

Helsinki has a strong underground Heavy Metal scene, so what better way to show it off than to have listeners literally unearth the local sounds themselves with converted metal detectors that play ...

the higher the ID value. We’ve picked up DIY metal detectors of all sizes over the years, but this one is the ATtiny-ist.

Officials with the Revere public school district held a community meeting Tuesday night, working with parents to explore ...

Though the weapons-detection system Orange County schools tested, and then rejected, last school year was expensive and often ...

Parents of Glenbard East High School students are on edge after a series of emails they received of threats, both on campus ...

News 2 reached out to several Middle Tennessee school district about the role that metal detectors play in their school ...

Neither Flagler County nor Seminole County public schools have metal detectors. More than 2,500 people have signed a petition ...

Southfield Police Department school resource officers were notified at 10 a.m. Sept. 16 that students had informed school ...

An online petition demanding security changes at Harford County Public Schools has quickly brought in thousands of signatures ...

引力波探测器使用数公里长的干涉仪来测量时空的微小膨胀和收缩。由于量子力学的原因，这些测量的精度是有限的。理论上，利用光的压缩态可以超越量子极限，而合适的滤光腔可以在更宽的频率范围内扩展这一优势。